{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "3d026d09b28dda24777129a931634949c75a9181"
            },
            {
              "fixed": "8c67b8c50286e0cb7f18d667e6a37a2ec6e08ff9"
            },
            {
              "fixed": "9024c7729eb523cf4f3a4203966d3a4aaabf030d"
            },
            {
              "fixed": "9e06c9c8a1f10c55d9bc5d139656d58795e64483"
            },
            {
              "fixed": "f2134d6ff30cd6e1bf63d6b0a5d8e0839f0168b3"
            },
            {
              "fixed": "20ee9c03f261bf6ac59331e2ca7b46b23646412a"
            },
            {
              "fixed": "b1bbeb8970eeb6c6bf3cd5314138103f7b69446d"
            },
            {
              "fixed": "d29a165588b6a0cf7a38db5cbd602aef7ef8c658"
            },
            {
              "fixed": "ef06882c7d8a7400b67d0d003b1008093dd589ed"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "3.15.0"
            },
            {
              "fixed": "5.10.270"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.11.0"
            },
            {
              "fixed": "5.15.221"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.16.0"
            },
            {
              "fixed": "6.1.188"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.2.0"
            },
            {
              "fixed": "6.6.157"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.12.109"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.50"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.2.4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/80xxx/CVE-2026-80944.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mwifiex: Detach sync cmd buffer on interrupted wait\n\nmwifiex synchronous commands keep the caller-provided data buffer in\ncmd_node-\u003edata_buf. Several callers pass stack-allocated objects there.\n\nIf wait_event_interruptible_timeout() is interrupted, the caller can\nreturn and release that stack object while the firmware command is still\nthe current command. A late firmware response then reaches the normal\nresponse handler, which can copy data through cmd_node-\u003edata_buf into the\nstale stack address.\n\nThis fixes a stack corruption observed during repeated association and\ndisassociation cycles. The panic trace showed the command wait being\ninterrupted immediately before a bad pointer dereference:\n\n  cmd_wait_q terminated: -512\n  Unable to handle kernel paging request at virtual address 002c583837384662\n  Kernel panic - not syncing: stack-protector: Kernel stack is corrupted\n  ...\n  Tainted: [M]=MACHINE_CHECK\n\nThe fault address decodes as little-endian ASCII:\n\n  0x002c583837384662 -\u003e \"bF878X,\\0\"\n\nwhich is a fragment of the VERSION_EXT firmware string exposed as\ndebugfs \"verext\":\n\n  w8997o-V4, RF878X, FP92, 16.92.21.p153.7\n\nThe same runs also showed corrupted control data containing:\n\n  0x2400372e333531 -\u003e \"153.7\\0$\"\n\nwhich is the tail of the same VERSION_EXT string. This points at a late\nVERSION_EXT response writing through a stale stack-backed data_buf after\nthe interrupted wait returned.\n\nAfter cancelling pending commands on an interrupted or timed-out wait,\ndetach the caller-owned data buffer from the still-current command. This\npreserves the existing command cancellation behaviour while preventing a\nlate response from writing through a pointer whose lifetime ended with the\nwaiting caller.\n\nTested on an i.MX8MP board using an 88W8997.",
  "id": "CVE-2026-80944",
  "modified": "2026-09-15T03:30:32.871576984Z",
  "published": "2026-09-11T19:42:16.076Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/20ee9c03f261bf6ac59331e2ca7b46b23646412a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/8c67b8c50286e0cb7f18d667e6a37a2ec6e08ff9"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9024c7729eb523cf4f3a4203966d3a4aaabf030d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9e06c9c8a1f10c55d9bc5d139656d58795e64483"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b1bbeb8970eeb6c6bf3cd5314138103f7b69446d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d29a165588b6a0cf7a38db5cbd602aef7ef8c658"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ef06882c7d8a7400b67d0d003b1008093dd589ed"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f2134d6ff30cd6e1bf63d6b0a5d8e0839f0168b3"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/80xxx/CVE-2026-80944.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-80944"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "wifi: mwifiex: Detach sync cmd buffer on interrupted wait"
}