{"id":"CVE-2026-46180","state":"PUBLISHED","title":"wifi: brcmfmac: Fix potential use-after-free issue when stopping watchdog task","description":"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().","publishedAt":"2026-05-28T09:36:33.904Z","updatedAt":"2026-10-15T01:21:08.231Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"a9ffda88be7416b8336f644806c2b3ed3ce08b26","status":"affected","lessThan":"a21f735fb1017ef89c6f9dbf4d799513b4e7bd5a","versionType":"git"},{"version":"a9ffda88be7416b8336f644806c2b3ed3ce08b26","status":"affected","lessThan":"df2e90d6a9955510f24f1dada78cfc439fd9fa88","versionType":"git"},{"version":"a9ffda88be7416b8336f644806c2b3ed3ce08b26","status":"affected","lessThan":"d616bb10de79e5c2bd8a24230a1128aeaf715615","versionType":"git"},{"version":"a9ffda88be7416b8336f644806c2b3ed3ce08b26","status":"affected","lessThan":"ed4168d1a50fef5be8eca947fbbf05a28507d265","versionType":"git"},{"version":"a9ffda88be7416b8336f644806c2b3ed3ce08b26","status":"affected","lessThan":"d16827cb1d3936f7627d0da6044483f743ebde03","versionType":"git"},{"version":"a9ffda88be7416b8336f644806c2b3ed3ce08b26","status":"affected","lessThan":"658d2e46c2e9a8eb9b80c5e803ce3c89885b3366","versionType":"git"},{"version":"a9ffda88be7416b8336f644806c2b3ed3ce08b26","status":"affected","lessThan":"908b92231e1ded53e43fcfad5e0704d83e1b803c","versionType":"git"},{"version":"a9ffda88be7416b8336f644806c2b3ed3ce08b26","status":"affected","lessThan":"c623b63580880cc742255eaed3d79804c1b91143","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/wireless/broadcom/brcm80211/brcmfmac/sdio.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"3.3","status":"affected"},{"version":"0","status":"unaffected","lessThan":"3.3","versionType":"semver"},{"version":"5.10.259","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.210","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.176","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.140","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.88","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.30","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.0.7","status":"unaffected","lessThanOrEqual":"7.0.*","versionType":"semver"},{"version":"7.1","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/wireless/broadcom/brcm80211/brcmfmac/sdio.c"]}],"references":["https://git.kernel.org/stable/c/a21f735fb1017ef89c6f9dbf4d799513b4e7bd5a","https://git.kernel.org/stable/c/df2e90d6a9955510f24f1dada78cfc439fd9fa88","https://git.kernel.org/stable/c/d616bb10de79e5c2bd8a24230a1128aeaf715615","https://git.kernel.org/stable/c/ed4168d1a50fef5be8eca947fbbf05a28507d265","https://git.kernel.org/stable/c/d16827cb1d3936f7627d0da6044483f743ebde03","https://git.kernel.org/stable/c/658d2e46c2e9a8eb9b80c5e803ce3c89885b3366","https://git.kernel.org/stable/c/908b92231e1ded53e43fcfad5e0704d83e1b803c","https://git.kernel.org/stable/c/c623b63580880cc742255eaed3d79804c1b91143","https://cert-portal.siemens.com/productcert/html/ssa-784472.html"],"weaknesses":[],"ingestedAt":"2026-10-29T20:12:07.131Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/46xxx/CVE-2026-46180.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-46180","state":"PUBLISHED","datePublished":"2026-05-28T09:36:33.904Z","dateUpdated":"2026-10-15T01:21:08.231Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-05-13T15:03:33.103Z"},"containers":{"cna":{"title":"wifi: brcmfmac: Fix potential use-after-free issue when stopping watchdog task","descriptions":[{"lang":"en","value":"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()."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"a9ffda88be7416b8336f644806c2b3ed3ce08b26","status":"affected","lessThan":"a21f735fb1017ef89c6f9dbf4d799513b4e7bd5a","versionType":"git"},{"version":"a9ffda88be7416b8336f644806c2b3ed3ce08b26","status":"affected","lessThan":"df2e90d6a9955510f24f1dada78cfc439fd9fa88","versionType":"git"},{"version":"a9ffda88be7416b8336f644806c2b3ed3ce08b26","status":"affected","lessThan":"d616bb10de79e5c2bd8a24230a1128aeaf715615","versionType":"git"},{"version":"a9ffda88be7416b8336f644806c2b3ed3ce08b26","status":"affected","lessThan":"ed4168d1a50fef5be8eca947fbbf05a28507d265","versionType":"git"},{"version":"a9ffda88be7416b8336f644806c2b3ed3ce08b26","status":"affected","lessThan":"d16827cb1d3936f7627d0da6044483f743ebde03","versionType":"git"},{"version":"a9ffda88be7416b8336f644806c2b3ed3ce08b26","status":"affected","lessThan":"658d2e46c2e9a8eb9b80c5e803ce3c89885b3366","versionType":"git"},{"version":"a9ffda88be7416b8336f644806c2b3ed3ce08b26","status":"affected","lessThan":"908b92231e1ded53e43fcfad5e0704d83e1b803c","versionType":"git"},{"version":"a9ffda88be7416b8336f644806c2b3ed3ce08b26","status":"affected","lessThan":"c623b63580880cc742255eaed3d79804c1b91143","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/wireless/broadcom/brcm80211/brcmfmac/sdio.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"3.3","status":"affected"},{"version":"0","status":"unaffected","lessThan":"3.3","versionType":"semver"},{"version":"5.10.259","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.210","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.176","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.140","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.88","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.30","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.0.7","status":"unaffected","lessThanOrEqual":"7.0.*","versionType":"semver"},{"version":"7.1","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/wireless/broadcom/brcm80211/brcmfmac/sdio.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/a21f735fb1017ef89c6f9dbf4d799513b4e7bd5a"},{"url":"https://git.kernel.org/stable/c/df2e90d6a9955510f24f1dada78cfc439fd9fa88"},{"url":"https://git.kernel.org/stable/c/d616bb10de79e5c2bd8a24230a1128aeaf715615"},{"url":"https://git.kernel.org/stable/c/ed4168d1a50fef5be8eca947fbbf05a28507d265"},{"url":"https://git.kernel.org/stable/c/d16827cb1d3936f7627d0da6044483f743ebde03"},{"url":"https://git.kernel.org/stable/c/658d2e46c2e9a8eb9b80c5e803ce3c89885b3366"},{"url":"https://git.kernel.org/stable/c/908b92231e1ded53e43fcfad5e0704d83e1b803c"},{"url":"https://git.kernel.org/stable/c/c623b63580880cc742255eaed3d79804c1b91143"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-06-19T11:59:49.089Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.3","versionEndExcluding":"5.10.259"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.3","versionEndExcluding":"5.15.210"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.3","versionEndExcluding":"6.1.176"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.3","versionEndExcluding":"6.6.140"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.3","versionEndExcluding":"6.12.88"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.3","versionEndExcluding":"6.18.30"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.3","versionEndExcluding":"7.0.7"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.3","versionEndExcluding":"7.1"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}},"adp":[{"affected":[{"vendor":"Siemens","product":"SIMATIC S7-1500 TM MFP - 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