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CVE-2022-49328 (GCVE-0-2022-49328)

Vulnerability from cvelistv5 – Published: 2025-02-26 02:10 – Updated: 2026-08-15 12:22
VLAI
Title
mt76: fix use-after-free by removing a non-RCU wcid pointer
Summary
In the Linux kernel, the following vulnerability has been resolved: mt76: fix use-after-free by removing a non-RCU wcid pointer Fixes an issue caught by KASAN about use-after-free in mt76_txq_schedule by protecting mtxq->wcid with rcu_lock between mt76_txq_schedule and sta_info_[alloc, free]. [18853.876689] ================================================================== [18853.876751] BUG: KASAN: use-after-free in mt76_txq_schedule+0x204/0xaf8 [mt76] [18853.876773] Read of size 8 at addr ffffffaf989a2138 by task mt76-tx phy0/883 [18853.876786] [18853.876810] CPU: 5 PID: 883 Comm: mt76-tx phy0 Not tainted 5.10.100-fix-510-56778d365941-kasan #5 0b01fbbcf41a530f52043508fec2e31a4215 [18853.876840] Call trace: [18853.876861] dump_backtrace+0x0/0x3ec [18853.876878] show_stack+0x20/0x2c [18853.876899] dump_stack+0x11c/0x1ac [18853.876918] print_address_description+0x74/0x514 [18853.876934] kasan_report+0x134/0x174 [18853.876948] __asan_report_load8_noabort+0x44/0x50 [18853.876976] mt76_txq_schedule+0x204/0xaf8 [mt76 074e03e4640e97fe7405ee1fab547b81c4fa45d2] [18853.877002] mt76_txq_schedule_all+0x2c/0x48 [mt76 074e03e4640e97fe7405ee1fab547b81c4fa45d2] [18853.877030] mt7921_tx_worker+0xa0/0x1cc [mt7921_common f0875ebac9d7b4754e1010549e7db50fbd90a047] [18853.877054] __mt76_worker_fn+0x190/0x22c [mt76 074e03e4640e97fe7405ee1fab547b81c4fa45d2] [18853.877071] kthread+0x2f8/0x3b8 [18853.877087] ret_from_fork+0x10/0x30 [18853.877098] [18853.877112] Allocated by task 941: [18853.877131] kasan_save_stack+0x38/0x68 [18853.877147] __kasan_kmalloc+0xd4/0xfc [18853.877163] kasan_kmalloc+0x10/0x1c [18853.877177] __kmalloc+0x264/0x3c4 [18853.877294] sta_info_alloc+0x460/0xf88 [mac80211] [18853.877410] ieee80211_prep_connection+0x204/0x1ee0 [mac80211] [18853.877523] ieee80211_mgd_auth+0x6c4/0xa4c [mac80211] [18853.877635] ieee80211_auth+0x20/0x2c [mac80211] [18853.877733] rdev_auth+0x7c/0x438 [cfg80211] [18853.877826] cfg80211_mlme_auth+0x26c/0x390 [cfg80211] [18853.877919] nl80211_authenticate+0x6d4/0x904 [cfg80211] [18853.877938] genl_rcv_msg+0x748/0x93c [18853.877954] netlink_rcv_skb+0x160/0x2a8 [18853.877969] genl_rcv+0x3c/0x54 [18853.877985] netlink_unicast_kernel+0x104/0x1ec [18853.877999] netlink_unicast+0x178/0x268 [18853.878015] netlink_sendmsg+0x3cc/0x5f0 [18853.878030] sock_sendmsg+0xb4/0xd8 [18853.878043] ____sys_sendmsg+0x2f8/0x53c [18853.878058] ___sys_sendmsg+0xe8/0x150 [18853.878071] __sys_sendmsg+0xc4/0x1f4 [18853.878087] __arm64_compat_sys_sendmsg+0x88/0x9c [18853.878101] el0_svc_common+0x1b4/0x390 [18853.878115] do_el0_svc_compat+0x8c/0xdc [18853.878131] el0_svc_compat+0x10/0x1c [18853.878146] el0_sync_compat_handler+0xa8/0xcc [18853.878161] el0_sync_compat+0x188/0x1c0 [18853.878171] [18853.878183] Freed by task 10927: [18853.878200] kasan_save_stack+0x38/0x68 [18853.878215] kasan_set_track+0x28/0x3c [18853.878228] kasan_set_free_info+0x24/0x48 [18853.878244] __kasan_slab_free+0x11c/0x154 [18853.878259] kasan_slab_free+0x14/0x24 [18853.878273] slab_free_freelist_hook+0xac/0x1b0 [18853.878287] kfree+0x104/0x390 [18853.878402] sta_info_free+0x198/0x210 [mac80211] [18853.878515] __sta_info_destroy_part2+0x230/0x2d4 [mac80211] [18853.878628] __sta_info_flush+0x300/0x37c [mac80211] [18853.878740] ieee80211_set_disassoc+0x2cc/0xa7c [mac80211] [18853.878851] ieee80211_mgd_deauth+0x4a4/0x10a0 [mac80211] [18853.878962] ieee80211_deauth+0x20/0x2c [mac80211] [18853.879057] rdev_deauth+0x7c/0x438 [cfg80211] [18853.879150] cfg80211_mlme_deauth+0x274/0x414 [cfg80211] [18853.879243] cfg80211_mlme_down+0xe4/0x118 [cfg80211] [18853.879335] cfg80211_disconnect+0x218/0x2d8 [cfg80211] [18853.879427] __cfg80211_leave+0x17c/0x240 [cfg80211] [18853.879519] cfg80211_leave+0x3c/0x58 [cfg80211] [18853.879611] wiphy_suspend+0xdc/0x200 [cfg80211] [18853.879628] dpm_run_callback+0x58/0x408 [18853.879642] __device_suspend+0x4cc/0x864 [18853.879658] async_suspend+0x34/0xf4 [18 ---truncated---
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-02-27 18:16 UTC
CWE
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 90fdc1717b1862eb3d506733f3b3e5217bc0de20 , < 4448327b41738dbfcda680eb4935ff835568f468 (git)
Affected: 90fdc1717b1862eb3d506733f3b3e5217bc0de20 , < e55bcdd0bf34a8b10d45ce80ebb3164c5292a17d (git)
Affected: 90fdc1717b1862eb3d506733f3b3e5217bc0de20 , < d5f77f1dbb59feae81f88e44551e8e1d8a802d9a (git)
Affected: 90fdc1717b1862eb3d506733f3b3e5217bc0de20 , < 51fb1278aa57ae0fc54adaa786e1965362bed4fb (git)
guessed Create a notification for this product.
Linux Linux Affected: 5.2
Unaffected: 0 , < 5.2 (semver)
Unaffected: 5.15.58 , ≤ 5.15.* (semver)
Unaffected: 5.17.14 , ≤ 5.17.* (semver)
Unaffected: 5.18.3 , ≤ 5.18.* (semver)
Unaffected: 5.19 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
Show details on NVD website

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "LOCAL",
              "availabilityImpact": "HIGH",
              "baseScore": 7.8,
              "baseSeverity": "HIGH",
              "confidentialityImpact": "HIGH",
              "integrityImpact": "HIGH",
              "privilegesRequired": "LOW",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
              "version": "3.1"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2022-49328",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-02-27T18:16:47.103514Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "problemTypes": [
          {
            "descriptions": [
              {
                "cweId": "CWE-416",
                "description": "CWE-416 Use After Free",
                "lang": "en",
                "type": "CWE"
              }
            ]
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2025-02-27T18:22:34.046Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/wireless/mediatek/mt76/mac80211.c",
            "drivers/net/wireless/mediatek/mt76/mt76.h",
            "drivers/net/wireless/mediatek/mt76/mt7603/main.c",
            "drivers/net/wireless/mediatek/mt76/mt7615/main.c",
            "drivers/net/wireless/mediatek/mt76/mt76x02_util.c",
            "drivers/net/wireless/mediatek/mt76/mt7915/main.c",
            "drivers/net/wireless/mediatek/mt76/mt7921/main.c",
            "drivers/net/wireless/mediatek/mt76/tx.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "4448327b41738dbfcda680eb4935ff835568f468",
              "status": "affected",
              "version": "90fdc1717b1862eb3d506733f3b3e5217bc0de20",
              "versionType": "git"
            },
            {
              "lessThan": "e55bcdd0bf34a8b10d45ce80ebb3164c5292a17d",
              "status": "affected",
              "version": "90fdc1717b1862eb3d506733f3b3e5217bc0de20",
              "versionType": "git"
            },
            {
              "lessThan": "d5f77f1dbb59feae81f88e44551e8e1d8a802d9a",
              "status": "affected",
              "version": "90fdc1717b1862eb3d506733f3b3e5217bc0de20",
              "versionType": "git"
            },
            {
              "lessThan": "51fb1278aa57ae0fc54adaa786e1965362bed4fb",
              "status": "affected",
              "version": "90fdc1717b1862eb3d506733f3b3e5217bc0de20",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/wireless/mediatek/mt76/mac80211.c",
            "drivers/net/wireless/mediatek/mt76/mt76.h",
            "drivers/net/wireless/mediatek/mt76/mt7603/main.c",
            "drivers/net/wireless/mediatek/mt76/mt7615/main.c",
            "drivers/net/wireless/mediatek/mt76/mt76x02_util.c",
            "drivers/net/wireless/mediatek/mt76/mt7915/main.c",
            "drivers/net/wireless/mediatek/mt76/mt7921/main.c",
            "drivers/net/wireless/mediatek/mt76/tx.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.2"
            },
            {
              "lessThan": "5.2",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.58",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.17.*",
              "status": "unaffected",
              "version": "5.17.14",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.18.*",
              "status": "unaffected",
              "version": "5.18.3",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "5.19",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.58",
                  "versionStartIncluding": "5.2",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.17.14",
                  "versionStartIncluding": "5.2",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.18.3",
                  "versionStartIncluding": "5.2",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.19",
                  "versionStartIncluding": "5.2",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmt76: fix use-after-free by removing a non-RCU wcid pointer\n\nFixes an issue caught by KASAN about use-after-free in mt76_txq_schedule\nby protecting mtxq-\u003ewcid with rcu_lock between mt76_txq_schedule and\nsta_info_[alloc, free].\n\n[18853.876689] ==================================================================\n[18853.876751] BUG: KASAN: use-after-free in mt76_txq_schedule+0x204/0xaf8 [mt76]\n[18853.876773] Read of size 8 at addr ffffffaf989a2138 by task mt76-tx phy0/883\n[18853.876786]\n[18853.876810] CPU: 5 PID: 883 Comm: mt76-tx phy0 Not tainted 5.10.100-fix-510-56778d365941-kasan #5 0b01fbbcf41a530f52043508fec2e31a4215\n\n[18853.876840] Call trace:\n[18853.876861]  dump_backtrace+0x0/0x3ec\n[18853.876878]  show_stack+0x20/0x2c\n[18853.876899]  dump_stack+0x11c/0x1ac\n[18853.876918]  print_address_description+0x74/0x514\n[18853.876934]  kasan_report+0x134/0x174\n[18853.876948]  __asan_report_load8_noabort+0x44/0x50\n[18853.876976]  mt76_txq_schedule+0x204/0xaf8 [mt76 074e03e4640e97fe7405ee1fab547b81c4fa45d2]\n[18853.877002]  mt76_txq_schedule_all+0x2c/0x48 [mt76 074e03e4640e97fe7405ee1fab547b81c4fa45d2]\n[18853.877030]  mt7921_tx_worker+0xa0/0x1cc [mt7921_common f0875ebac9d7b4754e1010549e7db50fbd90a047]\n[18853.877054]  __mt76_worker_fn+0x190/0x22c [mt76 074e03e4640e97fe7405ee1fab547b81c4fa45d2]\n[18853.877071]  kthread+0x2f8/0x3b8\n[18853.877087]  ret_from_fork+0x10/0x30\n[18853.877098]\n[18853.877112] Allocated by task 941:\n[18853.877131]  kasan_save_stack+0x38/0x68\n[18853.877147]  __kasan_kmalloc+0xd4/0xfc\n[18853.877163]  kasan_kmalloc+0x10/0x1c\n[18853.877177]  __kmalloc+0x264/0x3c4\n[18853.877294]  sta_info_alloc+0x460/0xf88 [mac80211]\n[18853.877410]  ieee80211_prep_connection+0x204/0x1ee0 [mac80211]\n[18853.877523]  ieee80211_mgd_auth+0x6c4/0xa4c [mac80211]\n[18853.877635]  ieee80211_auth+0x20/0x2c [mac80211]\n[18853.877733]  rdev_auth+0x7c/0x438 [cfg80211]\n[18853.877826]  cfg80211_mlme_auth+0x26c/0x390 [cfg80211]\n[18853.877919]  nl80211_authenticate+0x6d4/0x904 [cfg80211]\n[18853.877938]  genl_rcv_msg+0x748/0x93c\n[18853.877954]  netlink_rcv_skb+0x160/0x2a8\n[18853.877969]  genl_rcv+0x3c/0x54\n[18853.877985]  netlink_unicast_kernel+0x104/0x1ec\n[18853.877999]  netlink_unicast+0x178/0x268\n[18853.878015]  netlink_sendmsg+0x3cc/0x5f0\n[18853.878030]  sock_sendmsg+0xb4/0xd8\n[18853.878043]  ____sys_sendmsg+0x2f8/0x53c\n[18853.878058]  ___sys_sendmsg+0xe8/0x150\n[18853.878071]  __sys_sendmsg+0xc4/0x1f4\n[18853.878087]  __arm64_compat_sys_sendmsg+0x88/0x9c\n[18853.878101]  el0_svc_common+0x1b4/0x390\n[18853.878115]  do_el0_svc_compat+0x8c/0xdc\n[18853.878131]  el0_svc_compat+0x10/0x1c\n[18853.878146]  el0_sync_compat_handler+0xa8/0xcc\n[18853.878161]  el0_sync_compat+0x188/0x1c0\n[18853.878171]\n[18853.878183] Freed by task 10927:\n[18853.878200]  kasan_save_stack+0x38/0x68\n[18853.878215]  kasan_set_track+0x28/0x3c\n[18853.878228]  kasan_set_free_info+0x24/0x48\n[18853.878244]  __kasan_slab_free+0x11c/0x154\n[18853.878259]  kasan_slab_free+0x14/0x24\n[18853.878273]  slab_free_freelist_hook+0xac/0x1b0\n[18853.878287]  kfree+0x104/0x390\n[18853.878402]  sta_info_free+0x198/0x210 [mac80211]\n[18853.878515]  __sta_info_destroy_part2+0x230/0x2d4 [mac80211]\n[18853.878628]  __sta_info_flush+0x300/0x37c [mac80211]\n[18853.878740]  ieee80211_set_disassoc+0x2cc/0xa7c [mac80211]\n[18853.878851]  ieee80211_mgd_deauth+0x4a4/0x10a0 [mac80211]\n[18853.878962]  ieee80211_deauth+0x20/0x2c [mac80211]\n[18853.879057]  rdev_deauth+0x7c/0x438 [cfg80211]\n[18853.879150]  cfg80211_mlme_deauth+0x274/0x414 [cfg80211]\n[18853.879243]  cfg80211_mlme_down+0xe4/0x118 [cfg80211]\n[18853.879335]  cfg80211_disconnect+0x218/0x2d8 [cfg80211]\n[18853.879427]  __cfg80211_leave+0x17c/0x240 [cfg80211]\n[18853.879519]  cfg80211_leave+0x3c/0x58 [cfg80211]\n[18853.879611]  wiphy_suspend+0xdc/0x200 [cfg80211]\n[18853.879628]  dpm_run_callback+0x58/0x408\n[18853.879642]  __device_suspend+0x4cc/0x864\n[18853.879658]  async_suspend+0x34/0xf4\n[18\n---truncated---"
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 8.8,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "scenarios": [
            {
              "lang": "en",
              "value": "AV:A - The UAF is in the mt76 WiFi TX scheduling path during station removal; mt76 commonly runs as an AP (OpenWrt/mt7615/mt7915) or client where an on-link WiFi peer can force disassoc/deauth and race concurrent TX. This is same-segment wireless reachability, not internet-remote or host-local-only.\nAC:L - The attacker can drive both sides of the race\u2014generate traffic that keeps TX queues active and force station removal via disconnect/deauth\u2014and can retry indefinitely. Attacker-controlled races and UAFs score AC:L.\nPR:N - Station removal and in-flight TX are reachable from the wireless medium (peer deauth/disassoc or a client leaving an mt76 AP) with no privileges on the host kernel. No CAP_NET_ADMIN or local account is required in the AP/hotspot worst case.\nUI:N - Exploitation needs no victim user action beyond normal network operation; the attacker triggers disconnect and concurrent TX themselves.\nS:U - This is in-kernel memory corruption within the host kernel\u2019s security authority, not a VM/IOMMU/sandbox boundary crossing.\nC:H - mt76_txq_schedule dereferences a freed sta-embedded wcid via the non-RCU mtxq-\u003ewcid pointer; UAF enables control of freed object contents and thus arbitrary read primitives.\nI:H - The same wcid UAF is heap memory corruption exploitable for arbitrary write and control-flow hijack via TX scheduling after station free.\nA:H - Use-after-free on the TX worker path can oops/panic the kernel even without full exploitation, so availability impact is High."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-15T12:22:36.617Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/4448327b41738dbfcda680eb4935ff835568f468"
        },
        {
          "url": "https://git.kernel.org/stable/c/e55bcdd0bf34a8b10d45ce80ebb3164c5292a17d"
        },
        {
          "url": "https://git.kernel.org/stable/c/d5f77f1dbb59feae81f88e44551e8e1d8a802d9a"
        },
        {
          "url": "https://git.kernel.org/stable/c/51fb1278aa57ae0fc54adaa786e1965362bed4fb"
        }
      ],
      "title": "mt76: fix use-after-free by removing a non-RCU wcid pointer",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2022-49328",
    "datePublished": "2025-02-26T02:10:49.590Z",
    "dateReserved": "2025-02-26T02:08:31.538Z",
    "dateUpdated": "2026-08-15T12:22:36.617Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2022-49328",
      "date": "2026-09-16",
      "epss": "0.00413",
      "percentile": "0.35078"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2022-49328\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-02-26T07:01:09.610\",\"lastModified\":\"2026-08-15T13:17:19.613\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nmt76: fix use-after-free by removing a non-RCU wcid pointer\\n\\nFixes an issue caught by KASAN about use-after-free in mt76_txq_schedule\\nby protecting mtxq-\u003ewcid with rcu_lock between mt76_txq_schedule and\\nsta_info_[alloc, free].\\n\\n[18853.876689] ==================================================================\\n[18853.876751] BUG: KASAN: use-after-free in mt76_txq_schedule+0x204/0xaf8 [mt76]\\n[18853.876773] Read of size 8 at addr ffffffaf989a2138 by task mt76-tx phy0/883\\n[18853.876786]\\n[18853.876810] CPU: 5 PID: 883 Comm: mt76-tx phy0 Not tainted 5.10.100-fix-510-56778d365941-kasan #5 0b01fbbcf41a530f52043508fec2e31a4215\\n\\n[18853.876840] Call trace:\\n[18853.876861]  dump_backtrace+0x0/0x3ec\\n[18853.876878]  show_stack+0x20/0x2c\\n[18853.876899]  dump_stack+0x11c/0x1ac\\n[18853.876918]  print_address_description+0x74/0x514\\n[18853.876934]  kasan_report+0x134/0x174\\n[18853.876948]  __asan_report_load8_noabort+0x44/0x50\\n[18853.876976]  mt76_txq_schedule+0x204/0xaf8 [mt76 074e03e4640e97fe7405ee1fab547b81c4fa45d2]\\n[18853.877002]  mt76_txq_schedule_all+0x2c/0x48 [mt76 074e03e4640e97fe7405ee1fab547b81c4fa45d2]\\n[18853.877030]  mt7921_tx_worker+0xa0/0x1cc [mt7921_common f0875ebac9d7b4754e1010549e7db50fbd90a047]\\n[18853.877054]  __mt76_worker_fn+0x190/0x22c [mt76 074e03e4640e97fe7405ee1fab547b81c4fa45d2]\\n[18853.877071]  kthread+0x2f8/0x3b8\\n[18853.877087]  ret_from_fork+0x10/0x30\\n[18853.877098]\\n[18853.877112] Allocated by task 941:\\n[18853.877131]  kasan_save_stack+0x38/0x68\\n[18853.877147]  __kasan_kmalloc+0xd4/0xfc\\n[18853.877163]  kasan_kmalloc+0x10/0x1c\\n[18853.877177]  __kmalloc+0x264/0x3c4\\n[18853.877294]  sta_info_alloc+0x460/0xf88 [mac80211]\\n[18853.877410]  ieee80211_prep_connection+0x204/0x1ee0 [mac80211]\\n[18853.877523]  ieee80211_mgd_auth+0x6c4/0xa4c [mac80211]\\n[18853.877635]  ieee80211_auth+0x20/0x2c [mac80211]\\n[18853.877733]  rdev_auth+0x7c/0x438 [cfg80211]\\n[18853.877826]  cfg80211_mlme_auth+0x26c/0x390 [cfg80211]\\n[18853.877919]  nl80211_authenticate+0x6d4/0x904 [cfg80211]\\n[18853.877938]  genl_rcv_msg+0x748/0x93c\\n[18853.877954]  netlink_rcv_skb+0x160/0x2a8\\n[18853.877969]  genl_rcv+0x3c/0x54\\n[18853.877985]  netlink_unicast_kernel+0x104/0x1ec\\n[18853.877999]  netlink_unicast+0x178/0x268\\n[18853.878015]  netlink_sendmsg+0x3cc/0x5f0\\n[18853.878030]  sock_sendmsg+0xb4/0xd8\\n[18853.878043]  ____sys_sendmsg+0x2f8/0x53c\\n[18853.878058]  ___sys_sendmsg+0xe8/0x150\\n[18853.878071]  __sys_sendmsg+0xc4/0x1f4\\n[18853.878087]  __arm64_compat_sys_sendmsg+0x88/0x9c\\n[18853.878101]  el0_svc_common+0x1b4/0x390\\n[18853.878115]  do_el0_svc_compat+0x8c/0xdc\\n[18853.878131]  el0_svc_compat+0x10/0x1c\\n[18853.878146]  el0_sync_compat_handler+0xa8/0xcc\\n[18853.878161]  el0_sync_compat+0x188/0x1c0\\n[18853.878171]\\n[18853.878183] Freed by task 10927:\\n[18853.878200]  kasan_save_stack+0x38/0x68\\n[18853.878215]  kasan_set_track+0x28/0x3c\\n[18853.878228]  kasan_set_free_info+0x24/0x48\\n[18853.878244]  __kasan_slab_free+0x11c/0x154\\n[18853.878259]  kasan_slab_free+0x14/0x24\\n[18853.878273]  slab_free_freelist_hook+0xac/0x1b0\\n[18853.878287]  kfree+0x104/0x390\\n[18853.878402]  sta_info_free+0x198/0x210 [mac80211]\\n[18853.878515]  __sta_info_destroy_part2+0x230/0x2d4 [mac80211]\\n[18853.878628]  __sta_info_flush+0x300/0x37c [mac80211]\\n[18853.878740]  ieee80211_set_disassoc+0x2cc/0xa7c [mac80211]\\n[18853.878851]  ieee80211_mgd_deauth+0x4a4/0x10a0 [mac80211]\\n[18853.878962]  ieee80211_deauth+0x20/0x2c [mac80211]\\n[18853.879057]  rdev_deauth+0x7c/0x438 [cfg80211]\\n[18853.879150]  cfg80211_mlme_deauth+0x274/0x414 [cfg80211]\\n[18853.879243]  cfg80211_mlme_down+0xe4/0x118 [cfg80211]\\n[18853.879335]  cfg80211_disconnect+0x218/0x2d8 [cfg80211]\\n[18853.879427]  __cfg80211_leave+0x17c/0x240 [cfg80211]\\n[18853.879519]  cfg80211_leave+0x3c/0x58 [cfg80211]\\n[18853.879611]  wiphy_suspend+0xdc/0x200 [cfg80211]\\n[18853.879628]  dpm_run_callback+0x58/0x408\\n[18853.879642]  __device_suspend+0x4cc/0x864\\n[18853.879658]  async_suspend+0x34/0xf4\\n[18\\n---truncated---\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: mt76: corrige el use-after-free eliminando un puntero wcid que no sea RCU Corrige un problema detectado por KASAN sobre el use-after-free en mt76_txq_schedule protegiendo mtxq-\u0026gt;wcid con rcu_lock entre mt76_txq_schedule y sta_info_[alloc, free]. [18853.876689] ======================================================================= [18853.876751] ERROR: KASAN: use-after-free en mt76_txq_schedule+0x204/0xaf8 [mt76] [18853.876773] Lectura de tama\u00f1o 8 en la direcci\u00f3n ffffffaf989a2138 por la tarea mt76-tx phy0/883 [18853.876786] [18853.876810] CPU: 5 PID: 883 Comm: mt76-tx phy0 No contaminado 5.10.100-fix-510-56778d365941-kasan #5 0b01fbbcf41a530f52043508fec2e31a4215 [18853.876840] Seguimiento de llamadas: [18853.876861] dump_backtrace+0x0/0x3ec [18853.876878] show_stack+0x20/0x2c [18853.876899] dump_stack+0x11c/0x1ac [18853.876918] print_address_description+0x74/0x514 [18853.876934] kasan_report+0x134/0x174 [18853.876948] __asan_report_load8_noabort+0x44/0x50 [18853.876976] mt76_txq_schedule+0x204/0xaf8 [mt76 074e03e4640e97fe7405ee1fab547b81c4fa45d2] [18853.877002] mt76_txq_schedule_all+0x2c/0x48 [mt76 074e03e4640e97fe7405ee1fab547b81c4fa45d2] [18853.877030] mt7921_tx_worker+0xa0/0x1cc [mt7921_common f0875ebac9d7b4754e1010549e7db50fbd90a047] [18853.877054] __mt76_worker_fn+0x190/0x22c [mt76 074e03e4640e97fe7405ee1fab547b81c4fa45d2] [18853.877071] kthread+0x2f8/0x3b8 [18853.877087] ret_from_fork+0x10/0x30 [18853.877098] [18853.877112] Asignado por la tarea 941: [18853.877131] kasan_save_stack+0x38/0x68 [18853.877147] __kasan_kmalloc+0xd4/0xfc [18853.877163] kasan_kmalloc+0x10/0x1c [18853.877177] __kmalloc+0x264/0x3c4 [18853.877294] sta_info_alloc+0x460/0xf88 [mac80211] [18853.877410] ieee80211_prep_connection+0x204/0x1ee0 [mac80211] [18853.877523] ieee80211_mgd_auth+0x6c4/0xa4c [mac80211] [18853.877635] ieee80211_auth+0x20/0x2c [mac80211] [18853.877733] rdev_auth+0x7c/0x438 [cfg80211] [18853.877826] cfg80211_mlme_auth+0x26c/0x390 [cfg80211] [18853.877919] nl80211_authenticate+0x6d4/0x904 [cfg80211] [18853.877938] genl_rcv_msg+0x748/0x93c [18853.877954] netlink_rcv_skb+0x160/0x2a8 [18853.877969] genl_rcv+0x3c/0x54 [18853.877985] netlink_unicast_kernel+0x104/0x1ec [18853.877999] netlink_unicast+0x178/0x268 [18853.878015] netlink_sendmsg+0x3cc/0x5f0 [18853.878030] sock_sendmsg+0xb4/0xd8 [18853.878043] ____sys_sendmsg+0x2f8/0x53c [18853.878058] ___sys_sendmsg+0xe8/0x150 [18853.878071] __sys_sendmsg+0xc4/0x1f4 [18853.878087] __arm64_compat_sys_sendmsg+0x88/0x9c [18853.878101] el0_svc_common+0x1b4/0x390 [18853.878115] do_el0_svc_compat+0x8c/0xdc [18853.878131] el0_svc_compat+0x10/0x1c [18853.878146] el0_sync_compat_handler+0xa8/0xcc [18853.878161] el0_sync_compat+0x188/0x1c0 [18853.878171] [18853.878183] Liberado por la tarea 10927: [18853.878200] kasan_save_stack+0x38/0x68 [18853.878215] kasan_set_track+0x28/0x3c [18853.878228] kasan_set_free_info+0x24/0x48 [18853.878244] __kasan_slab_free+0x11c/0x154 [18853.878259] kasan_slab_free+0x14/0x24 [18853.878273] slab_free_freelist_hook+0xac/0x1b0 [18853.878287] kfree+0x104/0x390 [18853.878402] sta_info_free+0x198/0x210 [mac80211] [18853.878515] __sta_info_destroy_part2+0x230/0x2d4 [mac80211] [18853.878628] __sta_info_flush+0x300/0x37c [mac80211] [18853.878740] ieee80211_set_disassoc+0x2cc/0xa7c [mac80211] [18853.878851] ieee80211_mgd_deauth+0x4a4/0x10a0 [mac80211] [18853.878962] ieee80211_deauth+0x20/0x2c [mac80211] [18853.879057] rdev_deauth+0x7c/0x438 [cfg80211] [18853.879150] cfg80211_mlme_deauth+0x274/0x414 [cfg80211] [18853.879243] cfg80211_mlme_down+0xe4/0x118 [cfg80211] [18853.879335] cfg80211_disconnect+0x218/0x2d8 [cfg80211] [18853.879427] __cfg80211_leave+0x17c/0x240 [cfg80211] [18853.879519] cfg80211_leave+0x3c/0x58 [cfg80211] [18853.879611] wiphy_suspend+0xdc/0x200 [cfg80211] [18853.879628] dpm_run_callback+0x58/0x408 [18853.879642] __device_suspend+0x4cc/0x864 [18853.879658] async_suspend+0x34/0xf4 [18 ---truncado---\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"drivers/net/wireless/mediatek/mt76/mac80211.c\",\"drivers/net/wireless/mediatek/mt76/mt76.h\",\"drivers/net/wireless/mediatek/mt76/mt7603/main.c\",\"drivers/net/wireless/mediatek/mt76/mt7615/main.c\",\"drivers/net/wireless/mediatek/mt76/mt76x02_util.c\",\"drivers/net/wireless/mediatek/mt76/mt7915/main.c\",\"drivers/net/wireless/mediatek/mt76/mt7921/main.c\",\"drivers/net/wireless/mediatek/mt76/tx.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"90fdc1717b1862eb3d506733f3b3e5217bc0de20\",\"lessThan\":\"4448327b41738dbfcda680eb4935ff835568f468\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"90fdc1717b1862eb3d506733f3b3e5217bc0de20\",\"lessThan\":\"e55bcdd0bf34a8b10d45ce80ebb3164c5292a17d\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"90fdc1717b1862eb3d506733f3b3e5217bc0de20\",\"lessThan\":\"d5f77f1dbb59feae81f88e44551e8e1d8a802d9a\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"90fdc1717b1862eb3d506733f3b3e5217bc0de20\",\"lessThan\":\"51fb1278aa57ae0fc54adaa786e1965362bed4fb\",\"versionType\":\"git\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"drivers/net/wireless/mediatek/mt76/mac80211.c\",\"drivers/net/wireless/mediatek/mt76/mt76.h\",\"drivers/net/wireless/mediatek/mt76/mt7603/main.c\",\"drivers/net/wireless/mediatek/mt76/mt7615/main.c\",\"drivers/net/wireless/mediatek/mt76/mt76x02_util.c\",\"drivers/net/wireless/mediatek/mt76/mt7915/main.c\",\"drivers/net/wireless/mediatek/mt76/mt7921/main.c\",\"drivers/net/wireless/mediatek/mt76/tx.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"5.2\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"5.2\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.15.58\",\"lessThanOrEqual\":\"5.15.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.17.14\",\"lessThanOrEqual\":\"5.17.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.18.3\",\"lessThanOrEqual\":\"5.18.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.19\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H\",\"baseScore\":8.8,\"baseSeverity\":\"HIGH\",\"attackVector\":\"ADJACENT_NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":2.8,\"impactScore\":5.9},{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H\",\"baseScore\":7.8,\"baseSeverity\":\"HIGH\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":5.9}],\"ssvcV203\":[{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"ssvcData\":{\"timestamp\":\"2025-02-27T18:16:47.103514Z\",\"id\":\"CVE-2022-49328\",\"options\":[{\"exploitation\":\"none\"},{\"automatable\":\"no\"},{\"technicalImpact\":\"total\"}],\"role\":\"CISA Coordinator\",\"version\":\"2.0.3\"}}]},\"weaknesses\":[{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-416\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionEndExcluding\":\"5.15.58\",\"matchCriteriaId\":\"0DFC6E4B-8C85-4056-80F1-C9129E42FE45\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.16\",\"versionEndExcluding\":\"5.17.14\",\"matchCriteriaId\":\"15E2DD33-2255-4B76-9C15-04FF8CBAB252\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.18\",\"versionEndExcluding\":\"5.18.3\",\"matchCriteriaId\":\"8E122216-2E9E-4B3E-B7B8-D575A45BA3C2\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/4448327b41738dbfcda680eb4935ff835568f468\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/51fb1278aa57ae0fc54adaa786e1965362bed4fb\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/d5f77f1dbb59feae81f88e44551e8e1d8a802d9a\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/e55bcdd0bf34a8b10d45ce80ebb3164c5292a17d\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]}]}}",
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-08-15T12:44:39+00:00",
      "cve": "CVE-2022-49328",
      "id": "CVE-2022-49328",
      "initial_release_date": "2022-01-01T00:00:00+00:00",
      "product_status:fixed": "706",
      "product_status:known_affected": "38",
      "product_status:known_not_affected": "118",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: mt76: fix use-after-free by removing a non-RCU wcid pointer",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2022/cve-2022-49328.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-09-03T16:59:15Z",
      "cve": "CVE-2022-49328",
      "id": "CVE-2022-49328",
      "initial_release_date": "2025-02-27T03:08:40Z",
      "product_status:known_affected": "403",
      "product_status:known_not_affected": "332",
      "product_status:recommended": "270",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2022-49328",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2022-49328.json",
      "version": "48"
    },
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"cvssV3_1\": {\"scope\": \"UNCHANGED\", \"version\": \"3.1\", \"baseScore\": 7.8, \"attackVector\": \"LOCAL\", \"baseSeverity\": \"HIGH\", \"vectorString\": \"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H\", \"integrityImpact\": \"HIGH\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"LOW\", \"availabilityImpact\": \"HIGH\", \"privilegesRequired\": \"LOW\", \"confidentialityImpact\": \"HIGH\"}}, {\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2022-49328\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"total\"}], \"version\": \"2.0.3\", \"timestamp\": \"2025-02-27T18:16:47.103514Z\"}}}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-416\", \"description\": \"CWE-416 Use After Free\"}]}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2025-02-27T18:16:48.522Z\"}}], \"cna\": {\"title\": \"mt76: fix use-after-free by removing a non-RCU wcid pointer\", \"metrics\": [{\"cvssV3_1\": {\"version\": \"3.1\", \"baseScore\": 8.8, \"baseSeverity\": \"HIGH\", \"vectorString\": \"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H\"}, \"scenarios\": [{\"lang\": \"en\", \"value\": \"AV:A - The UAF is in the mt76 WiFi TX scheduling path during station removal; mt76 commonly runs as an AP (OpenWrt/mt7615/mt7915) or client where an on-link WiFi peer can force disassoc/deauth and race concurrent TX. This is same-segment wireless reachability, not internet-remote or host-local-only.\\nAC:L - The attacker can drive both sides of the race\\u2014generate traffic that keeps TX queues active and force station removal via disconnect/deauth\\u2014and can retry indefinitely. Attacker-controlled races and UAFs score AC:L.\\nPR:N - Station removal and in-flight TX are reachable from the wireless medium (peer deauth/disassoc or a client leaving an mt76 AP) with no privileges on the host kernel. No CAP_NET_ADMIN or local account is required in the AP/hotspot worst case.\\nUI:N - Exploitation needs no victim user action beyond normal network operation; the attacker triggers disconnect and concurrent TX themselves.\\nS:U - This is in-kernel memory corruption within the host kernel\\u2019s security authority, not a VM/IOMMU/sandbox boundary crossing.\\nC:H - mt76_txq_schedule dereferences a freed sta-embedded wcid via the non-RCU mtxq-\u003ewcid pointer; UAF enables control of freed object contents and thus arbitrary read primitives.\\nI:H - The same wcid UAF is heap memory corruption exploitable for arbitrary write and control-flow hijack via TX scheduling after station free.\\nA:H - Use-after-free on the TX worker path can oops/panic the kernel even without full exploitation, so availability impact is High.\"}]}], \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"90fdc1717b1862eb3d506733f3b3e5217bc0de20\", \"lessThan\": \"4448327b41738dbfcda680eb4935ff835568f468\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"90fdc1717b1862eb3d506733f3b3e5217bc0de20\", \"lessThan\": \"e55bcdd0bf34a8b10d45ce80ebb3164c5292a17d\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"90fdc1717b1862eb3d506733f3b3e5217bc0de20\", \"lessThan\": \"d5f77f1dbb59feae81f88e44551e8e1d8a802d9a\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"90fdc1717b1862eb3d506733f3b3e5217bc0de20\", \"lessThan\": \"51fb1278aa57ae0fc54adaa786e1965362bed4fb\", \"versionType\": \"git\"}], \"programFiles\": [\"drivers/net/wireless/mediatek/mt76/mac80211.c\", \"drivers/net/wireless/mediatek/mt76/mt76.h\", \"drivers/net/wireless/mediatek/mt76/mt7603/main.c\", \"drivers/net/wireless/mediatek/mt76/mt7615/main.c\", \"drivers/net/wireless/mediatek/mt76/mt76x02_util.c\", \"drivers/net/wireless/mediatek/mt76/mt7915/main.c\", \"drivers/net/wireless/mediatek/mt76/mt7921/main.c\", \"drivers/net/wireless/mediatek/mt76/tx.c\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"5.2\"}, {\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"5.2\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"5.15.58\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.15.*\"}, {\"status\": \"unaffected\", \"version\": \"5.17.14\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.17.*\"}, {\"status\": \"unaffected\", \"version\": \"5.18.3\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.18.*\"}, {\"status\": \"unaffected\", \"version\": \"5.19\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"drivers/net/wireless/mediatek/mt76/mac80211.c\", \"drivers/net/wireless/mediatek/mt76/mt76.h\", \"drivers/net/wireless/mediatek/mt76/mt7603/main.c\", \"drivers/net/wireless/mediatek/mt76/mt7615/main.c\", \"drivers/net/wireless/mediatek/mt76/mt76x02_util.c\", \"drivers/net/wireless/mediatek/mt76/mt7915/main.c\", \"drivers/net/wireless/mediatek/mt76/mt7921/main.c\", \"drivers/net/wireless/mediatek/mt76/tx.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/4448327b41738dbfcda680eb4935ff835568f468\"}, {\"url\": \"https://git.kernel.org/stable/c/e55bcdd0bf34a8b10d45ce80ebb3164c5292a17d\"}, {\"url\": \"https://git.kernel.org/stable/c/d5f77f1dbb59feae81f88e44551e8e1d8a802d9a\"}, {\"url\": \"https://git.kernel.org/stable/c/51fb1278aa57ae0fc54adaa786e1965362bed4fb\"}], \"x_generator\": {\"engine\": \"bippy-1.2.0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\nmt76: fix use-after-free by removing a non-RCU wcid pointer\\n\\nFixes an issue caught by KASAN about use-after-free in mt76_txq_schedule\\nby protecting mtxq-\u003ewcid with rcu_lock between mt76_txq_schedule and\\nsta_info_[alloc, free].\\n\\n[18853.876689] ==================================================================\\n[18853.876751] BUG: KASAN: use-after-free in mt76_txq_schedule+0x204/0xaf8 [mt76]\\n[18853.876773] Read of size 8 at addr ffffffaf989a2138 by task mt76-tx phy0/883\\n[18853.876786]\\n[18853.876810] CPU: 5 PID: 883 Comm: mt76-tx phy0 Not tainted 5.10.100-fix-510-56778d365941-kasan #5 0b01fbbcf41a530f52043508fec2e31a4215\\n\\n[18853.876840] Call trace:\\n[18853.876861]  dump_backtrace+0x0/0x3ec\\n[18853.876878]  show_stack+0x20/0x2c\\n[18853.876899]  dump_stack+0x11c/0x1ac\\n[18853.876918]  print_address_description+0x74/0x514\\n[18853.876934]  kasan_report+0x134/0x174\\n[18853.876948]  __asan_report_load8_noabort+0x44/0x50\\n[18853.876976]  mt76_txq_schedule+0x204/0xaf8 [mt76 074e03e4640e97fe7405ee1fab547b81c4fa45d2]\\n[18853.877002]  mt76_txq_schedule_all+0x2c/0x48 [mt76 074e03e4640e97fe7405ee1fab547b81c4fa45d2]\\n[18853.877030]  mt7921_tx_worker+0xa0/0x1cc [mt7921_common f0875ebac9d7b4754e1010549e7db50fbd90a047]\\n[18853.877054]  __mt76_worker_fn+0x190/0x22c [mt76 074e03e4640e97fe7405ee1fab547b81c4fa45d2]\\n[18853.877071]  kthread+0x2f8/0x3b8\\n[18853.877087]  ret_from_fork+0x10/0x30\\n[18853.877098]\\n[18853.877112] Allocated by task 941:\\n[18853.877131]  kasan_save_stack+0x38/0x68\\n[18853.877147]  __kasan_kmalloc+0xd4/0xfc\\n[18853.877163]  kasan_kmalloc+0x10/0x1c\\n[18853.877177]  __kmalloc+0x264/0x3c4\\n[18853.877294]  sta_info_alloc+0x460/0xf88 [mac80211]\\n[18853.877410]  ieee80211_prep_connection+0x204/0x1ee0 [mac80211]\\n[18853.877523]  ieee80211_mgd_auth+0x6c4/0xa4c [mac80211]\\n[18853.877635]  ieee80211_auth+0x20/0x2c [mac80211]\\n[18853.877733]  rdev_auth+0x7c/0x438 [cfg80211]\\n[18853.877826]  cfg80211_mlme_auth+0x26c/0x390 [cfg80211]\\n[18853.877919]  nl80211_authenticate+0x6d4/0x904 [cfg80211]\\n[18853.877938]  genl_rcv_msg+0x748/0x93c\\n[18853.877954]  netlink_rcv_skb+0x160/0x2a8\\n[18853.877969]  genl_rcv+0x3c/0x54\\n[18853.877985]  netlink_unicast_kernel+0x104/0x1ec\\n[18853.877999]  netlink_unicast+0x178/0x268\\n[18853.878015]  netlink_sendmsg+0x3cc/0x5f0\\n[18853.878030]  sock_sendmsg+0xb4/0xd8\\n[18853.878043]  ____sys_sendmsg+0x2f8/0x53c\\n[18853.878058]  ___sys_sendmsg+0xe8/0x150\\n[18853.878071]  __sys_sendmsg+0xc4/0x1f4\\n[18853.878087]  __arm64_compat_sys_sendmsg+0x88/0x9c\\n[18853.878101]  el0_svc_common+0x1b4/0x390\\n[18853.878115]  do_el0_svc_compat+0x8c/0xdc\\n[18853.878131]  el0_svc_compat+0x10/0x1c\\n[18853.878146]  el0_sync_compat_handler+0xa8/0xcc\\n[18853.878161]  el0_sync_compat+0x188/0x1c0\\n[18853.878171]\\n[18853.878183] Freed by task 10927:\\n[18853.878200]  kasan_save_stack+0x38/0x68\\n[18853.878215]  kasan_set_track+0x28/0x3c\\n[18853.878228]  kasan_set_free_info+0x24/0x48\\n[18853.878244]  __kasan_slab_free+0x11c/0x154\\n[18853.878259]  kasan_slab_free+0x14/0x24\\n[18853.878273]  slab_free_freelist_hook+0xac/0x1b0\\n[18853.878287]  kfree+0x104/0x390\\n[18853.878402]  sta_info_free+0x198/0x210 [mac80211]\\n[18853.878515]  __sta_info_destroy_part2+0x230/0x2d4 [mac80211]\\n[18853.878628]  __sta_info_flush+0x300/0x37c [mac80211]\\n[18853.878740]  ieee80211_set_disassoc+0x2cc/0xa7c [mac80211]\\n[18853.878851]  ieee80211_mgd_deauth+0x4a4/0x10a0 [mac80211]\\n[18853.878962]  ieee80211_deauth+0x20/0x2c [mac80211]\\n[18853.879057]  rdev_deauth+0x7c/0x438 [cfg80211]\\n[18853.879150]  cfg80211_mlme_deauth+0x274/0x414 [cfg80211]\\n[18853.879243]  cfg80211_mlme_down+0xe4/0x118 [cfg80211]\\n[18853.879335]  cfg80211_disconnect+0x218/0x2d8 [cfg80211]\\n[18853.879427]  __cfg80211_leave+0x17c/0x240 [cfg80211]\\n[18853.879519]  cfg80211_leave+0x3c/0x58 [cfg80211]\\n[18853.879611]  wiphy_suspend+0xdc/0x200 [cfg80211]\\n[18853.879628]  dpm_run_callback+0x58/0x408\\n[18853.879642]  __device_suspend+0x4cc/0x864\\n[18853.879658]  async_suspend+0x34/0xf4\\n[18\\n---truncated---\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.15.58\", \"versionStartIncluding\": \"5.2\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.17.14\", \"versionStartIncluding\": \"5.2\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.18.3\", \"versionStartIncluding\": \"5.2\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.19\", \"versionStartIncluding\": \"5.2\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2026-08-15T12:22:36.617Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2022-49328\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-08-15T12:22:36.617Z\", \"dateReserved\": \"2025-02-26T02:08:31.538Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2025-02-26T02:10:49.590Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

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Detection rules are retrieved from Rulezet.

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Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.


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