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wifi: ath6kl: fix OOB read from firmware num_msg in TX complete handler

Type: advisorySource: Official CVE List1 source record

In the Linux kernel, the following vulnerability has been resolved: wifi: ath6kl: fix OOB read from firmware num_msg in TX complete handler The firmware-controlled num_msg field (u8, 0-255) drives the loop in ath6kl_wmi_tx_complete_event_rx() without validation against the buffer length. This allows out-of-bounds reads of up to 1020 bytes past the WMI event buffer when the firmware sends an inflated num_msg. Add a check that the buffer is large enough to hold the fixed struct and the num_msg variable-length entries.

Announced Group revision 1
Original source ↗

CVE-2026-68353

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-2026-68353

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": "bdcd81707973cf8aa9305337166f8ee842a050d4",
        "lessThan": "5297299c3fa6133275db0be99d69cd759b6cbfe9",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "bdcd81707973cf8aa9305337166f8ee842a050d4",
        "lessThan": "35196a07603f8c94a4943093bc26d5b5826285f8",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "bdcd81707973cf8aa9305337166f8ee842a050d4",
        "lessThan": "0e0fc04af9b443c6b425f00fb604ff599bc80d1d",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "bdcd81707973cf8aa9305337166f8ee842a050d4",
        "lessThan": "69ac7ba3a3df6654e7daa82674575a8c4a1a63ea",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "bdcd81707973cf8aa9305337166f8ee842a050d4",
        "lessThan": "289edc3c71344b89e6522891147cfb8f61b088bb",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "bdcd81707973cf8aa9305337166f8ee842a050d4",
        "lessThan": "eb636fbc443149b3501c3f97e26225ddcb314a0f",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "bdcd81707973cf8aa9305337166f8ee842a050d4",
        "lessThan": "c38b0d5c661951b5dd082bdf31f8a57a0ce6e540",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "bdcd81707973cf8aa9305337166f8ee842a050d4",
        "lessThan": "3a21c89215cc18f1a97c5e5bfd1da6d4f3d44495",
        "versionType": "git"
      }
    ],
    "programFiles": [
      "drivers/net/wireless/ath/ath6kl/wmi.c"
    ],
    "defaultStatus": "unaffected"
  },
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "3.2"
      },
      {
        "status": "unaffected",
        "version": "0",
        "lessThan": "3.2",
        "versionType": "semver"
      },
      {
        "status": "unaffected",
        "version": "5.10.265",
        "versionType": "semver",
        "lessThanOrEqual": "5.10.*"
      },
      {
        "status": "unaffected",
        "version": "5.15.216",
        "versionType": "semver",
        "lessThanOrEqual": "5.15.*"
      },
      {
        "status": "unaffected",
        "version": "6.1.183",
        "versionType": "semver",
        "lessThanOrEqual": "6.1.*"
      },
      {
        "status": "unaffected",
        "version": "6.6.148",
        "versionType": "semver",
        "lessThanOrEqual": "6.6.*"
      },
      {
        "status": "unaffected",
        "version": "6.12.101",
        "versionType": "semver",
        "lessThanOrEqual": "6.12.*"
      },
      {
        "status": "unaffected",
        "version": "6.18.42",
        "versionType": "semver",
        "lessThanOrEqual": "6.18.*"
      },
      {
        "status": "unaffected",
        "version": "7.1.6",
        "versionType": "semver",
        "lessThanOrEqual": "7.1.*"
      },
      {
        "status": "unaffected",
        "version": "7.2",
        "versionType": "original_commit_for_fix",
        "lessThanOrEqual": "*"
      }
    ],
    "programFiles": [
      "drivers/net/wireless/ath/ath6kl/wmi.c"
    ],
    "defaultStatus": "affected"
  }
]
Related CVEs
CVE-2026-68353

Source reference: /cveMetadata/cveId

Publisher severity

high

Source reference: /containers/cna/metrics

Event
#41703 · Revision 1
Added to Heist Feed
Publisher date
Read the original announcement

Revision history

  1. CVE-2026-68353 · Revision 1Source updated