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wifi: mwifiex: Detach sync cmd buffer on interrupted wait

Type: advisorySource: Official CVE List1 source record

In the Linux kernel, the following vulnerability has been resolved: wifi: mwifiex: Detach sync cmd buffer on interrupted wait mwifiex synchronous commands keep the caller-provided data buffer in cmd_node->data_buf. Several callers pass stack-allocated objects there. If wait_event_interruptible_timeout() is interrupted, the caller can return and release that stack object while the firmware command is still the current command. A late firmware response then reaches the normal response handler, which can copy data through cmd_node->data_buf into the stale stack address. This fixes a stack corruption observed during repeated association and disassociation cycles. The panic trace showed the command wait being interrupted immediately before a bad pointer dereference: cmd_wait_q terminated: -512 Unable to handle kernel paging request at virtual address 002c583837384662 Kernel panic - not syncing: stack-protector: Kernel stack is corrupted ... Tainted: [M]=MACHINE_CHECK The fault address decodes as little-endian ASCII: 0x002c583837384662 -> "bF878X,\0" which is a fragment of the VERSION_EXT firmware string exposed as debugfs "verext": w8997o-V4, RF878X, FP92, 16.92.21.p153.7 The same runs also showed corrupted control data containing: 0x2400372e333531 -> "153.7\0$" which is the tail of the same VERSION_EXT string. This points at a late VERSION_EXT response writing through a stale stack-backed data_buf after the interrupted wait returned. After cancelling pending commands on an interr

Announced Source revision 1
Original source ↗

CVE-2026-80944

Primary source · Revision 1

Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.

Security context

Source reference: cve:CVE-2026-80944

Linux

Source reference: /containers/cna/affected/0/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Linux

Source reference: /containers/cna/affected/1/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Structured affected-version data

Original package identities and version rules from this source.

[
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "3d026d09b28dda24777129a931634949c75a9181",
        "lessThan": "8c67b8c50286e0cb7f18d667e6a37a2ec6e08ff9",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "3d026d09b28dda24777129a931634949c75a9181",
        "lessThan": "9024c7729eb523cf4f3a4203966d3a4aaabf030d",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "3d026d09b28dda24777129a931634949c75a9181",
        "lessThan": "9e06c9c8a1f10c55d9bc5d139656d58795e64483",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "3d026d09b28dda24777129a931634949c75a9181",
        "lessThan": "f2134d6ff30cd6e1bf63d6b0a5d8e0839f0168b3",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "3d026d09b28dda24777129a931634949c75a9181",
        "lessThan": "20ee9c03f261bf6ac59331e2ca7b46b23646412a",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "3d026d09b28dda24777129a931634949c75a9181",
        "lessThan": "b1bbeb8970eeb6c6bf3cd5314138103f7b69446d",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "3d026d09b28dda24777129a931634949c75a9181",
        "lessThan": "d29a165588b6a0cf7a38db5cbd602aef7ef8c658",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "3d026d09b28dda24777129a931634949c75a9181",
        "lessThan": "ef06882c7d8a7400b67d0d003b1008093dd589ed",
        "versionType": "git"
      }
    ],
    "programFiles": [
      "drivers/net/wireless/marvell/mwifiex/sta_ioctl.c"
    ],
    "defaultStatus": "unaffected"
  },
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "3.15"
      },
      {
        "status": "unaffected",
        "version": "0",
        "lessThan": "3.15",
        "versionType": "semver"
      },
      {
        "status": "unaffected",
        "version": "5.10.270",
        "versionType": "semver",
        "lessThanOrEqual": "5.10.*"
      },
      {
        "status": "unaffected",
        "version": "5.15.221",
        "versionType": "semver",
        "lessThanOrEqual": "5.15.*"
      },
      {
        "status": "unaffected",
        "version": "6.1.188",
        "versionType": "semver",
        "lessThanOrEqual": "6.1.*"
      },
      {
        "status": "unaffected",
        "version": "6.6.157",
        "versionType": "semver",
        "lessThanOrEqual": "6.6.*"
      },
      {
        "status": "unaffected",
        "version": "6.12.109",
        "versionType": "semver",
        "lessThanOrEqual": "6.12.*"
      },
      {
        "status": "unaffected",
        "version": "6.18.50",
        "versionType": "semver",
        "lessThanOrEqual": "6.18.*"
      },
      {
        "status": "unaffected",
        "version": "7.2.4",
        "versionType": "semver",
        "lessThanOrEqual": "7.2.*"
      },
      {
        "status": "unaffected",
        "version": "7.3",
        "versionType": "original_commit_for_fix",
        "lessThanOrEqual": "*"
      }
    ],
    "programFiles": [
      "drivers/net/wireless/marvell/mwifiex/sta_ioctl.c"
    ],
    "defaultStatus": "affected"
  }
]
Related CVEs
CVE-2026-80944

Source reference: /cveMetadata/cveId

Publisher severity

high

Source reference: /containers/cna/metrics

Event
#34904 · Revision 1
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Publisher date
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