github - ghsa-9vm9-fqq4-5wqv

GHSA-9VM9-FQQ4-5WQV

Vulnerability from github – Published: 2025-12-24 12:30 – Updated: 2025-12-24 12:30

Details

In the Linux kernel, the following vulnerability has been resolved:

wifi: mt76: mt7921s: fix slab-out-of-bounds access in sdio host

SDIO may need addtional 511 bytes to align bus operation. If the tailroom of this skb is not big enough, we would access invalid memory region. For low level operation, increase skb size to keep valid memory access in SDIO host.

Error message: [69.951] BUG: KASAN: slab-out-of-bounds in sg_copy_buffer+0xe9/0x1a0 [69.951] Read of size 64 at addr ffff88811c9cf000 by task kworker/u16:7/451 [69.951] CPU: 4 PID: 451 Comm: kworker/u16:7 Tainted: G W OE 6.1.0-rc5 #1 [69.951] Workqueue: kvub300c vub300_cmndwork_thread [vub300] [69.951] Call Trace: [69.951] [69.952] dump_stack_lvl+0x49/0x63 [69.952] print_report+0x171/0x4a8 [69.952] kasan_report+0xb4/0x130 [69.952] kasan_check_range+0x149/0x1e0 [69.952] memcpy+0x24/0x70 [69.952] sg_copy_buffer+0xe9/0x1a0 [69.952] sg_copy_to_buffer+0x12/0x20 [69.952] __command_write_data.isra.0+0x23c/0xbf0 [vub300] [69.952] vub300_cmndwork_thread+0x17f3/0x58b0 [vub300] [69.952] process_one_work+0x7ee/0x1320 [69.952] worker_thread+0x53c/0x1240 [69.952] kthread+0x2b8/0x370 [69.952] ret_from_fork+0x1f/0x30 [69.952]

[69.952] Allocated by task 854: [69.952] kasan_save_stack+0x26/0x50 [69.952] kasan_set_track+0x25/0x30 [69.952] kasan_save_alloc_info+0x1b/0x30 [69.952] __kasan_kmalloc+0x87/0xa0 [69.952] __kmalloc_node_track_caller+0x63/0x150 [69.952] kmalloc_reserve+0x31/0xd0 [69.952] __alloc_skb+0xfc/0x2b0 [69.952] __mt76_mcu_msg_alloc+0xbf/0x230 [mt76] [69.952] mt76_mcu_send_and_get_msg+0xab/0x110 [mt76] [69.952] __mt76_mcu_send_firmware.cold+0x94/0x15d [mt76] [69.952] mt76_connac_mcu_send_ram_firmware+0x415/0x54d [mt76_connac_lib] [69.952] mt76_connac2_load_ram.cold+0x118/0x4bc [mt76_connac_lib] [69.952] mt7921_run_firmware.cold+0x2e9/0x405 [mt7921_common] [69.952] mt7921s_mcu_init+0x45/0x80 [mt7921s] [69.953] mt7921_init_work+0xe1/0x2a0 [mt7921_common] [69.953] process_one_work+0x7ee/0x1320 [69.953] worker_thread+0x53c/0x1240 [69.953] kthread+0x2b8/0x370 [69.953] ret_from_fork+0x1f/0x30 [69.953] The buggy address belongs to the object at ffff88811c9ce800 which belongs to the cache kmalloc-2k of size 2048 [69.953] The buggy address is located 0 bytes to the right of 2048-byte region [ffff88811c9ce800, ffff88811c9cf000)

[69.953] Memory state around the buggy address: [69.953] ffff88811c9cef00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [69.953] ffff88811c9cef80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [69.953] >ffff88811c9cf000: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [69.953] ^ [69.953] ffff88811c9cf080: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [69.953] ffff88811c9cf100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc

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{
  "affected": [],
  "aliases": [
    "CVE-2022-50701"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-12-24T11:15:50Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mt76: mt7921s: fix slab-out-of-bounds access in sdio host\n\nSDIO may need addtional 511 bytes to align bus operation. If the tailroom\nof this skb is not big enough, we would access invalid memory region.\nFor low level operation, increase skb size to keep valid memory access in\nSDIO host.\n\nError message:\n[69.951] BUG: KASAN: slab-out-of-bounds in sg_copy_buffer+0xe9/0x1a0\n[69.951] Read of size 64 at addr ffff88811c9cf000 by task kworker/u16:7/451\n[69.951] CPU: 4 PID: 451 Comm: kworker/u16:7 Tainted: G W  OE  6.1.0-rc5 #1\n[69.951] Workqueue: kvub300c vub300_cmndwork_thread [vub300]\n[69.951] Call Trace:\n[69.951]  \u003cTASK\u003e\n[69.952]  dump_stack_lvl+0x49/0x63\n[69.952]  print_report+0x171/0x4a8\n[69.952]  kasan_report+0xb4/0x130\n[69.952]  kasan_check_range+0x149/0x1e0\n[69.952]  memcpy+0x24/0x70\n[69.952]  sg_copy_buffer+0xe9/0x1a0\n[69.952]  sg_copy_to_buffer+0x12/0x20\n[69.952]  __command_write_data.isra.0+0x23c/0xbf0 [vub300]\n[69.952]  vub300_cmndwork_thread+0x17f3/0x58b0 [vub300]\n[69.952]  process_one_work+0x7ee/0x1320\n[69.952]  worker_thread+0x53c/0x1240\n[69.952]  kthread+0x2b8/0x370\n[69.952]  ret_from_fork+0x1f/0x30\n[69.952]  \u003c/TASK\u003e\n\n[69.952] Allocated by task 854:\n[69.952]  kasan_save_stack+0x26/0x50\n[69.952]  kasan_set_track+0x25/0x30\n[69.952]  kasan_save_alloc_info+0x1b/0x30\n[69.952]  __kasan_kmalloc+0x87/0xa0\n[69.952]  __kmalloc_node_track_caller+0x63/0x150\n[69.952]  kmalloc_reserve+0x31/0xd0\n[69.952]  __alloc_skb+0xfc/0x2b0\n[69.952]  __mt76_mcu_msg_alloc+0xbf/0x230 [mt76]\n[69.952]  mt76_mcu_send_and_get_msg+0xab/0x110 [mt76]\n[69.952]  __mt76_mcu_send_firmware.cold+0x94/0x15d [mt76]\n[69.952]  mt76_connac_mcu_send_ram_firmware+0x415/0x54d [mt76_connac_lib]\n[69.952]  mt76_connac2_load_ram.cold+0x118/0x4bc [mt76_connac_lib]\n[69.952]  mt7921_run_firmware.cold+0x2e9/0x405 [mt7921_common]\n[69.952]  mt7921s_mcu_init+0x45/0x80 [mt7921s]\n[69.953]  mt7921_init_work+0xe1/0x2a0 [mt7921_common]\n[69.953]  process_one_work+0x7ee/0x1320\n[69.953]  worker_thread+0x53c/0x1240\n[69.953]  kthread+0x2b8/0x370\n[69.953]  ret_from_fork+0x1f/0x30\n[69.953] The buggy address belongs to the object at ffff88811c9ce800\n             which belongs to the cache kmalloc-2k of size 2048\n[69.953] The buggy address is located 0 bytes to the right of\n             2048-byte region [ffff88811c9ce800, ffff88811c9cf000)\n\n[69.953] Memory state around the buggy address:\n[69.953]  ffff88811c9cef00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00\n[69.953]  ffff88811c9cef80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00\n[69.953] \u003effff88811c9cf000: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc\n[69.953]                    ^\n[69.953]  ffff88811c9cf080: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc\n[69.953]  ffff88811c9cf100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc",
  "id": "GHSA-9vm9-fqq4-5wqv",
  "modified": "2025-12-24T12:30:26Z",
  "published": "2025-12-24T12:30:26Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-50701"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0b358e36433d2c46a65488a146bf8b4623fc5bbb"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/8b5174a7f25d03df0ffa171ff86de383a89e8e89"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/aec4cf2ea0797e28f18f8dbe01943a56d987fe56"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2022-50701 (GCVE-0-2022-50701)

Vulnerability from cvelistv5 – Published: 2025-12-24 10:55 – Updated: 2025-12-24 10:55

Title

wifi: mt76: mt7921s: fix slab-out-of-bounds access in sdio host

Summary

In the Linux kernel, the following vulnerability has been resolved: wifi: mt76: mt7921s: fix slab-out-of-bounds access in sdio host SDIO may need addtional 511 bytes to align bus operation. If the tailroom of this skb is not big enough, we would access invalid memory region. For low level operation, increase skb size to keep valid memory access in SDIO host. Error message: [69.951] BUG: KASAN: slab-out-of-bounds in sg_copy_buffer+0xe9/0x1a0 [69.951] Read of size 64 at addr ffff88811c9cf000 by task kworker/u16:7/451 [69.951] CPU: 4 PID: 451 Comm: kworker/u16:7 Tainted: G W OE 6.1.0-rc5 #1 [69.951] Workqueue: kvub300c vub300_cmndwork_thread [vub300] [69.951] Call Trace: [69.951] <TASK> [69.952] dump_stack_lvl+0x49/0x63 [69.952] print_report+0x171/0x4a8 [69.952] kasan_report+0xb4/0x130 [69.952] kasan_check_range+0x149/0x1e0 [69.952] memcpy+0x24/0x70 [69.952] sg_copy_buffer+0xe9/0x1a0 [69.952] sg_copy_to_buffer+0x12/0x20 [69.952] __command_write_data.isra.0+0x23c/0xbf0 [vub300] [69.952] vub300_cmndwork_thread+0x17f3/0x58b0 [vub300] [69.952] process_one_work+0x7ee/0x1320 [69.952] worker_thread+0x53c/0x1240 [69.952] kthread+0x2b8/0x370 [69.952] ret_from_fork+0x1f/0x30 [69.952] </TASK> [69.952] Allocated by task 854: [69.952] kasan_save_stack+0x26/0x50 [69.952] kasan_set_track+0x25/0x30 [69.952] kasan_save_alloc_info+0x1b/0x30 [69.952] __kasan_kmalloc+0x87/0xa0 [69.952] __kmalloc_node_track_caller+0x63/0x150 [69.952] kmalloc_reserve+0x31/0xd0 [69.952] __alloc_skb+0xfc/0x2b0 [69.952] __mt76_mcu_msg_alloc+0xbf/0x230 [mt76] [69.952] mt76_mcu_send_and_get_msg+0xab/0x110 [mt76] [69.952] __mt76_mcu_send_firmware.cold+0x94/0x15d [mt76] [69.952] mt76_connac_mcu_send_ram_firmware+0x415/0x54d [mt76_connac_lib] [69.952] mt76_connac2_load_ram.cold+0x118/0x4bc [mt76_connac_lib] [69.952] mt7921_run_firmware.cold+0x2e9/0x405 [mt7921_common] [69.952] mt7921s_mcu_init+0x45/0x80 [mt7921s] [69.953] mt7921_init_work+0xe1/0x2a0 [mt7921_common] [69.953] process_one_work+0x7ee/0x1320 [69.953] worker_thread+0x53c/0x1240 [69.953] kthread+0x2b8/0x370 [69.953] ret_from_fork+0x1f/0x30 [69.953] The buggy address belongs to the object at ffff88811c9ce800 which belongs to the cache kmalloc-2k of size 2048 [69.953] The buggy address is located 0 bytes to the right of 2048-byte region [ffff88811c9ce800, ffff88811c9cf000) [69.953] Memory state around the buggy address: [69.953] ffff88811c9cef00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [69.953] ffff88811c9cef80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [69.953] >ffff88811c9cf000: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [69.953] ^ [69.953] ffff88811c9cf080: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [69.953] ffff88811c9cf100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc

Severity ?

No CVSS data available.

Assigner

Linux

References

URL

Tags

	https://git.kernel.org/stable/c/8b5174a7f25d03df0…
	https://git.kernel.org/stable/c/0b358e36433d2c46a…
	https://git.kernel.org/stable/c/aec4cf2ea0797e28f…

Impacted products

Vendor

Product

Version

Linux

Affected: 764dee47e2c1ed828c8a51cbf58f89b5e3ded11b , < 8b5174a7f25d03df0ffa171ff86de383a89e8e89 (git)
Affected: 764dee47e2c1ed828c8a51cbf58f89b5e3ded11b , < 0b358e36433d2c46a65488a146bf8b4623fc5bbb (git)
Affected: 764dee47e2c1ed828c8a51cbf58f89b5e3ded11b , < aec4cf2ea0797e28f18f8dbe01943a56d987fe56 (git)

Linux

Affected: 5.16
Unaffected: 0 , < 5.16 (semver)
Unaffected: 6.1.16 , ≤ 6.1.* (semver)
Unaffected: 6.2.3 , ≤ 6.2.* (semver)
Unaffected: 6.3 , ≤ * (original_commit_for_fix)

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/wireless/mediatek/mt76/sdio_txrx.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "8b5174a7f25d03df0ffa171ff86de383a89e8e89",
              "status": "affected",
              "version": "764dee47e2c1ed828c8a51cbf58f89b5e3ded11b",
              "versionType": "git"
            },
            {
              "lessThan": "0b358e36433d2c46a65488a146bf8b4623fc5bbb",
              "status": "affected",
              "version": "764dee47e2c1ed828c8a51cbf58f89b5e3ded11b",
              "versionType": "git"
            },
            {
              "lessThan": "aec4cf2ea0797e28f18f8dbe01943a56d987fe56",
              "status": "affected",
              "version": "764dee47e2c1ed828c8a51cbf58f89b5e3ded11b",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/wireless/mediatek/mt76/sdio_txrx.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.16"
            },
            {
              "lessThan": "5.16",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.16",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.2.*",
              "status": "unaffected",
              "version": "6.2.3",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.3",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.16",
                  "versionStartIncluding": "5.16",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.2.3",
                  "versionStartIncluding": "5.16",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.3",
                  "versionStartIncluding": "5.16",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mt76: mt7921s: fix slab-out-of-bounds access in sdio host\n\nSDIO may need addtional 511 bytes to align bus operation. If the tailroom\nof this skb is not big enough, we would access invalid memory region.\nFor low level operation, increase skb size to keep valid memory access in\nSDIO host.\n\nError message:\n[69.951] BUG: KASAN: slab-out-of-bounds in sg_copy_buffer+0xe9/0x1a0\n[69.951] Read of size 64 at addr ffff88811c9cf000 by task kworker/u16:7/451\n[69.951] CPU: 4 PID: 451 Comm: kworker/u16:7 Tainted: G W  OE  6.1.0-rc5 #1\n[69.951] Workqueue: kvub300c vub300_cmndwork_thread [vub300]\n[69.951] Call Trace:\n[69.951]  \u003cTASK\u003e\n[69.952]  dump_stack_lvl+0x49/0x63\n[69.952]  print_report+0x171/0x4a8\n[69.952]  kasan_report+0xb4/0x130\n[69.952]  kasan_check_range+0x149/0x1e0\n[69.952]  memcpy+0x24/0x70\n[69.952]  sg_copy_buffer+0xe9/0x1a0\n[69.952]  sg_copy_to_buffer+0x12/0x20\n[69.952]  __command_write_data.isra.0+0x23c/0xbf0 [vub300]\n[69.952]  vub300_cmndwork_thread+0x17f3/0x58b0 [vub300]\n[69.952]  process_one_work+0x7ee/0x1320\n[69.952]  worker_thread+0x53c/0x1240\n[69.952]  kthread+0x2b8/0x370\n[69.952]  ret_from_fork+0x1f/0x30\n[69.952]  \u003c/TASK\u003e\n\n[69.952] Allocated by task 854:\n[69.952]  kasan_save_stack+0x26/0x50\n[69.952]  kasan_set_track+0x25/0x30\n[69.952]  kasan_save_alloc_info+0x1b/0x30\n[69.952]  __kasan_kmalloc+0x87/0xa0\n[69.952]  __kmalloc_node_track_caller+0x63/0x150\n[69.952]  kmalloc_reserve+0x31/0xd0\n[69.952]  __alloc_skb+0xfc/0x2b0\n[69.952]  __mt76_mcu_msg_alloc+0xbf/0x230 [mt76]\n[69.952]  mt76_mcu_send_and_get_msg+0xab/0x110 [mt76]\n[69.952]  __mt76_mcu_send_firmware.cold+0x94/0x15d [mt76]\n[69.952]  mt76_connac_mcu_send_ram_firmware+0x415/0x54d [mt76_connac_lib]\n[69.952]  mt76_connac2_load_ram.cold+0x118/0x4bc [mt76_connac_lib]\n[69.952]  mt7921_run_firmware.cold+0x2e9/0x405 [mt7921_common]\n[69.952]  mt7921s_mcu_init+0x45/0x80 [mt7921s]\n[69.953]  mt7921_init_work+0xe1/0x2a0 [mt7921_common]\n[69.953]  process_one_work+0x7ee/0x1320\n[69.953]  worker_thread+0x53c/0x1240\n[69.953]  kthread+0x2b8/0x370\n[69.953]  ret_from_fork+0x1f/0x30\n[69.953] The buggy address belongs to the object at ffff88811c9ce800\n             which belongs to the cache kmalloc-2k of size 2048\n[69.953] The buggy address is located 0 bytes to the right of\n             2048-byte region [ffff88811c9ce800, ffff88811c9cf000)\n\n[69.953] Memory state around the buggy address:\n[69.953]  ffff88811c9cef00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00\n[69.953]  ffff88811c9cef80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00\n[69.953] \u003effff88811c9cf000: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc\n[69.953]                    ^\n[69.953]  ffff88811c9cf080: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc\n[69.953]  ffff88811c9cf100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc"
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-12-24T10:55:17.090Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/8b5174a7f25d03df0ffa171ff86de383a89e8e89"
        },
        {
          "url": "https://git.kernel.org/stable/c/0b358e36433d2c46a65488a146bf8b4623fc5bbb"
        },
        {
          "url": "https://git.kernel.org/stable/c/aec4cf2ea0797e28f18f8dbe01943a56d987fe56"
        }
      ],
      "title": "wifi: mt76: mt7921s: fix slab-out-of-bounds access in sdio host",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2022-50701",
    "datePublished": "2025-12-24T10:55:17.090Z",
    "dateReserved": "2025-12-24T10:53:15.517Z",
    "dateUpdated": "2025-12-24T10:55:17.090Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date

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.

Detection rules are retrieved from Rulezet.

Action not permitted

GHSA-9VM9-FQQ4-5WQV

CVE-2022-50701 (GCVE-0-2022-50701)

Tags

Sightings

Nomenclature