Vulnerability-Lookup

GHSA-2244-8PCV-8JR6

Vulnerability from github – Published: 2026-08-10 15:33 – Updated: 2026-08-19 18:32

Details

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.

Severity

8.1 (High)


                  
                    CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H

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{
  "affected": [],
  "aliases": [
    "CVE-2026-68353"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-08-10T13:20:27Z",
    "severity": "HIGH"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: ath6kl: fix OOB read from firmware num_msg in TX complete handler\n\nThe firmware-controlled num_msg field (u8, 0-255) drives the loop in\nath6kl_wmi_tx_complete_event_rx() without validation against the buffer\nlength. This allows out-of-bounds reads of up to 1020 bytes past the\nWMI event buffer when the firmware sends an inflated num_msg.\n\nAdd a check that the buffer is large enough to hold the fixed struct\nand the num_msg variable-length entries.",
  "id": "GHSA-2244-8pcv-8jr6",
  "modified": "2026-08-19T18:32:16Z",
  "published": "2026-08-10T15:33:48Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-68353"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0e0fc04af9b443c6b425f00fb604ff599bc80d1d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/289edc3c71344b89e6522891147cfb8f61b088bb"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/35196a07603f8c94a4943093bc26d5b5826285f8"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3a21c89215cc18f1a97c5e5bfd1da6d4f3d44495"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/5297299c3fa6133275db0be99d69cd759b6cbfe9"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/69ac7ba3a3df6654e7daa82674575a8c4a1a63ea"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c38b0d5c661951b5dd082bdf31f8a57a0ce6e540"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/eb636fbc443149b3501c3f97e26225ddcb314a0f"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2026-68353 (GCVE-0-2026-68353)

Vulnerability from cvelistv5 – Published: 2026-08-10 12:03 – Updated: 2026-08-19 16:33

Title

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

Summary

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.

Severity

8.1 (High)


                        
                          CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H

Assigner

Linux mitre root

References

8 references

URL	Tags
https://git.kernel.org/stable/c/5297299c3fa613327…
https://git.kernel.org/stable/c/35196a07603f8c94a…
https://git.kernel.org/stable/c/0e0fc04af9b443c6b…
https://git.kernel.org/stable/c/69ac7ba3a3df6654e…
https://git.kernel.org/stable/c/289edc3c71344b89e…
https://git.kernel.org/stable/c/eb636fbc443149b35…
https://git.kernel.org/stable/c/c38b0d5c661951b5d…
https://git.kernel.org/stable/c/3a21c89215cc18f1a…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: bdcd81707973cf8aa9305337166f8ee842a050d4 , < 5297299c3fa6133275db0be99d69cd759b6cbfe9 (git) Affected: bdcd81707973cf8aa9305337166f8ee842a050d4 , < 35196a07603f8c94a4943093bc26d5b5826285f8 (git) Affected: bdcd81707973cf8aa9305337166f8ee842a050d4 , < 0e0fc04af9b443c6b425f00fb604ff599bc80d1d (git) Affected: bdcd81707973cf8aa9305337166f8ee842a050d4 , < 69ac7ba3a3df6654e7daa82674575a8c4a1a63ea (git) Affected: bdcd81707973cf8aa9305337166f8ee842a050d4 , < 289edc3c71344b89e6522891147cfb8f61b088bb (git) Affected: bdcd81707973cf8aa9305337166f8ee842a050d4 , < eb636fbc443149b3501c3f97e26225ddcb314a0f (git) Affected: bdcd81707973cf8aa9305337166f8ee842a050d4 , < c38b0d5c661951b5dd082bdf31f8a57a0ce6e540 (git) Affected: bdcd81707973cf8aa9305337166f8ee842a050d4 , < 3a21c89215cc18f1a97c5e5bfd1da6d4f3d44495 (git)
Linux	Linux	Affected: 3.2 Unaffected: 0 , < 3.2 (semver) Unaffected: 5.10.265 , ≤ 5.10.* (semver) Unaffected: 5.15.216 , ≤ 5.15.* (semver) Unaffected: 6.1.183 , ≤ 6.1.* (semver) Unaffected: 6.6.148 , ≤ 6.6.* (semver) Unaffected: 6.12.101 , ≤ 6.12.* (semver) Unaffected: 6.18.42 , ≤ 6.18.* (semver) Unaffected: 7.1.6 , ≤ 7.1.* (semver) Unaffected: 7.2 , ≤ * (original_commit_for_fix)

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JSON

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/wireless/ath/ath6kl/wmi.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "5297299c3fa6133275db0be99d69cd759b6cbfe9",
              "status": "affected",
              "version": "bdcd81707973cf8aa9305337166f8ee842a050d4",
              "versionType": "git"
            },
            {
              "lessThan": "35196a07603f8c94a4943093bc26d5b5826285f8",
              "status": "affected",
              "version": "bdcd81707973cf8aa9305337166f8ee842a050d4",
              "versionType": "git"
            },
            {
              "lessThan": "0e0fc04af9b443c6b425f00fb604ff599bc80d1d",
              "status": "affected",
              "version": "bdcd81707973cf8aa9305337166f8ee842a050d4",
              "versionType": "git"
            },
            {
              "lessThan": "69ac7ba3a3df6654e7daa82674575a8c4a1a63ea",
              "status": "affected",
              "version": "bdcd81707973cf8aa9305337166f8ee842a050d4",
              "versionType": "git"
            },
            {
              "lessThan": "289edc3c71344b89e6522891147cfb8f61b088bb",
              "status": "affected",
              "version": "bdcd81707973cf8aa9305337166f8ee842a050d4",
              "versionType": "git"
            },
            {
              "lessThan": "eb636fbc443149b3501c3f97e26225ddcb314a0f",
              "status": "affected",
              "version": "bdcd81707973cf8aa9305337166f8ee842a050d4",
              "versionType": "git"
            },
            {
              "lessThan": "c38b0d5c661951b5dd082bdf31f8a57a0ce6e540",
              "status": "affected",
              "version": "bdcd81707973cf8aa9305337166f8ee842a050d4",
              "versionType": "git"
            },
            {
              "lessThan": "3a21c89215cc18f1a97c5e5bfd1da6d4f3d44495",
              "status": "affected",
              "version": "bdcd81707973cf8aa9305337166f8ee842a050d4",
              "versionType": "git"
            }
          ]
        },
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          "product": "Linux",
          "programFiles": [
            "drivers/net/wireless/ath/ath6kl/wmi.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "3.2"
            },
            {
              "lessThan": "3.2",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.265",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.216",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.183",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.148",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.101",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.42",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.1.*",
              "status": "unaffected",
              "version": "7.1.6",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.2",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.10.265",
                  "versionStartIncluding": "3.2",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.216",
                  "versionStartIncluding": "3.2",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.183",
                  "versionStartIncluding": "3.2",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.148",
                  "versionStartIncluding": "3.2",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.101",
                  "versionStartIncluding": "3.2",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.42",
                  "versionStartIncluding": "3.2",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.1.6",
                  "versionStartIncluding": "3.2",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.2",
                  "versionStartIncluding": "3.2",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: ath6kl: fix OOB read from firmware num_msg in TX complete handler\n\nThe firmware-controlled num_msg field (u8, 0-255) drives the loop in\nath6kl_wmi_tx_complete_event_rx() without validation against the buffer\nlength. This allows out-of-bounds reads of up to 1020 bytes past the\nWMI event buffer when the firmware sends an inflated num_msg.\n\nAdd a check that the buffer is large enough to hold the fixed struct\nand the num_msg variable-length entries."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 8.1,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H",
            "version": "3.1"
          },
          "scenarios": [
            {
              "lang": "en",
              "value": "AV:A - The vulnerable handler parses WMI control events delivered by the ath6kl AR600x wireless firmware over SDIO/USB; an attacker on the same wireless segment who subverts or influences the wireless device\u0027s firmware supplies the malformed event, matching the adjacent-network vector used for other ath driver event-parsing flaws.\nAC:L - Triggering requires only a WMI_TX_COMPLETE_EVENTID event whose payload is shorter than num_msg * 4 bytes; the loop bound is taken directly from the event with no validation, so the read happens deterministically every time.\nPR:N - The event is processed in the driver\u0027s asynchronous control-message receive path with no capability check, no syscall entry, and no authentication or association gate; the attacker needs no credentials on the target system.\nUI:N - The WMI event is handled automatically by the driver as soon as the interface is running; no victim action such as opening a file or issuing a command is needed.\nS:U - The out-of-bounds read stays within the kernel\u0027s own memory and security authority; no VM, IOMMU, or sandbox boundary is crossed.\nC:H - Up to 1020 bytes past the event buffer are read and the contents are emitted through ath6kl_dbg() into the kernel log on debug builds, disclosing adjacent kernel heap data well beyond a small bounded read.\nI:N - The loop only reads and prints the out-of-bounds entries; there is no write to kernel memory and no attacker-controlled pointer is dereferenced for modification.\nA:H - The read can walk past the end of the slab allocation into unmapped or redzoned memory, producing an oops or a KASAN panic on hardened/debug kernels and thus a full loss of availability."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-19T16:33:58.283Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/5297299c3fa6133275db0be99d69cd759b6cbfe9"
        },
        {
          "url": "https://git.kernel.org/stable/c/35196a07603f8c94a4943093bc26d5b5826285f8"
        },
        {
          "url": "https://git.kernel.org/stable/c/0e0fc04af9b443c6b425f00fb604ff599bc80d1d"
        },
        {
          "url": "https://git.kernel.org/stable/c/69ac7ba3a3df6654e7daa82674575a8c4a1a63ea"
        },
        {
          "url": "https://git.kernel.org/stable/c/289edc3c71344b89e6522891147cfb8f61b088bb"
        },
        {
          "url": "https://git.kernel.org/stable/c/eb636fbc443149b3501c3f97e26225ddcb314a0f"
        },
        {
          "url": "https://git.kernel.org/stable/c/c38b0d5c661951b5dd082bdf31f8a57a0ce6e540"
        },
        {
          "url": "https://git.kernel.org/stable/c/3a21c89215cc18f1a97c5e5bfd1da6d4f3d44495"
        }
      ],
      "title": "wifi: ath6kl: fix OOB read from firmware num_msg in TX complete handler",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-68353",
    "datePublished": "2026-08-10T12:03:30.330Z",
    "dateReserved": "2026-07-30T09:28:09.385Z",
    "dateUpdated": "2026-08-19T16:33:58.283Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date	Other

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.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.

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GHSA-2244-8PCV-8JR6

CVE-2026-68353 (GCVE-0-2026-68353)

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Sightings

Nomenclature