Vulnerability-Lookup

GHSA-JMX9-9WWR-M2R4

Vulnerability from github – Published: 2026-05-28 12:30 – Updated: 2026-06-19 15:33

Details

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

wifi: brcmfmac: Fix potential use-after-free issue when stopping watchdog task

Watchdog task might end between send_sig() and kthread_stop() calls, what results in the use-after-free issue. Fix this by increasing watchdog task reference count before calling send_sig() and dropping it by switching to kthread_stop_put().

Severity

7.8 (High)


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

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{
  "affected": [],
  "aliases": [
    "CVE-2026-46180"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-416"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-05-28T10:16:33Z",
    "severity": "HIGH"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: brcmfmac: Fix potential use-after-free issue when stopping watchdog task\n\nWatchdog task might end between send_sig() and kthread_stop() calls, what\nresults in the use-after-free issue. Fix this by increasing watchdog task\nreference count before calling send_sig() and dropping it by switching to\nkthread_stop_put().",
  "id": "GHSA-jmx9-9wwr-m2r4",
  "modified": "2026-06-19T15:33:13Z",
  "published": "2026-05-28T12:30:31Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-46180"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/658d2e46c2e9a8eb9b80c5e803ce3c89885b3366"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/908b92231e1ded53e43fcfad5e0704d83e1b803c"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a21f735fb1017ef89c6f9dbf4d799513b4e7bd5a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c623b63580880cc742255eaed3d79804c1b91143"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d16827cb1d3936f7627d0da6044483f743ebde03"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d616bb10de79e5c2bd8a24230a1128aeaf715615"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/df2e90d6a9955510f24f1dada78cfc439fd9fa88"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ed4168d1a50fef5be8eca947fbbf05a28507d265"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2026-46180 (GCVE-0-2026-46180)

Vulnerability from cvelistv5 – Published: 2026-05-28 09:36 – Updated: 2026-06-19 11:59

Title

wifi: brcmfmac: Fix potential use-after-free issue when stopping watchdog task

Summary

In the Linux kernel, the following vulnerability has been resolved: wifi: brcmfmac: Fix potential use-after-free issue when stopping watchdog task Watchdog task might end between send_sig() and kthread_stop() calls, what results in the use-after-free issue. Fix this by increasing watchdog task reference count before calling send_sig() and dropping it by switching to kthread_stop_put().

Severity

No CVSS data available.

Assigner

Linux

References

8 references

URL	Tags
https://git.kernel.org/stable/c/a21f735fb1017ef89…
https://git.kernel.org/stable/c/df2e90d6a9955510f…
https://git.kernel.org/stable/c/d616bb10de79e5c2b…
https://git.kernel.org/stable/c/ed4168d1a50fef5be…
https://git.kernel.org/stable/c/d16827cb1d3936f76…
https://git.kernel.org/stable/c/658d2e46c2e9a8eb9…
https://git.kernel.org/stable/c/908b92231e1ded53e…
https://git.kernel.org/stable/c/c623b63580880cc74…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: a9ffda88be7416b8336f644806c2b3ed3ce08b26 , < a21f735fb1017ef89c6f9dbf4d799513b4e7bd5a (git) Affected: a9ffda88be7416b8336f644806c2b3ed3ce08b26 , < df2e90d6a9955510f24f1dada78cfc439fd9fa88 (git) Affected: a9ffda88be7416b8336f644806c2b3ed3ce08b26 , < d616bb10de79e5c2bd8a24230a1128aeaf715615 (git) Affected: a9ffda88be7416b8336f644806c2b3ed3ce08b26 , < ed4168d1a50fef5be8eca947fbbf05a28507d265 (git) Affected: a9ffda88be7416b8336f644806c2b3ed3ce08b26 , < d16827cb1d3936f7627d0da6044483f743ebde03 (git) Affected: a9ffda88be7416b8336f644806c2b3ed3ce08b26 , < 658d2e46c2e9a8eb9b80c5e803ce3c89885b3366 (git) Affected: a9ffda88be7416b8336f644806c2b3ed3ce08b26 , < 908b92231e1ded53e43fcfad5e0704d83e1b803c (git) Affected: a9ffda88be7416b8336f644806c2b3ed3ce08b26 , < c623b63580880cc742255eaed3d79804c1b91143 (git)
Linux	Linux	Affected: 3.3 Unaffected: 0 , < 3.3 (semver) Unaffected: 5.10.259 , ≤ 5.10.* (semver) Unaffected: 5.15.210 , ≤ 5.15.* (semver) Unaffected: 6.1.176 , ≤ 6.1.* (semver) Unaffected: 6.6.140 , ≤ 6.6.* (semver) Unaffected: 6.12.88 , ≤ 6.12.* (semver) Unaffected: 6.18.30 , ≤ 6.18.* (semver) Unaffected: 7.0.7 , ≤ 7.0.* (semver) Unaffected: 7.1 , ≤ * (original_commit_for_fix)

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{
  "containers": {
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      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/wireless/broadcom/brcm80211/brcmfmac/sdio.c"
          ],
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          "versions": [
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          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "3.3"
            },
            {
              "lessThan": "3.3",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.259",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.210",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.176",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.140",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.88",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.30",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.0.*",
              "status": "unaffected",
              "version": "7.0.7",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
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          "nodes": [
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        {
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    "cveId": "CVE-2026-46180",
    "datePublished": "2026-05-28T09:36:33.904Z",
    "dateReserved": "2026-05-13T15:03:33.103Z",
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}

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.

Action not permitted

GHSA-JMX9-9WWR-M2R4

CVE-2026-46180 (GCVE-0-2026-46180)

Tags

Sightings

Nomenclature