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GHSA-V93H-9M65-MHX5

Vulnerability from github – Published: 2025-02-27 21:32 – Updated: 2025-02-27 21:32
VLAI
Details

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] _syssendmsg+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---

Severity
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
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{
  "affected": [],
  "aliases": [
    "CVE-2022-49328"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-416"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-02-26T07:01:09Z",
    "severity": "HIGH"
  },
  "details": "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---",
  "id": "GHSA-v93h-9m65-mhx5",
  "modified": "2025-02-27T21:32:13Z",
  "published": "2025-02-27T21:32:13Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-49328"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/4448327b41738dbfcda680eb4935ff835568f468"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/51fb1278aa57ae0fc54adaa786e1965362bed4fb"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d5f77f1dbb59feae81f88e44551e8e1d8a802d9a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e55bcdd0bf34a8b10d45ce80ebb3164c5292a17d"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}



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