CVE-2026-98196wifi: brcmsmac: fix UAF in brcms_free_timer()
- —Not scoredno CVSS score yet
- 0.18%Exploitation in 30 daysEPSS · top 93% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
In the Linux kernel, the following vulnerability has been resolved: wifi: brcmsmac: fix UAF in brcms_free_timer() brcms_free_timer() calls brcms_del_timer() which uses the non-synchronous cancel_delayed_work() to cancel the timer's underlying delayed work. If the work callback (_brcms_timer) is already running, cancel_delayed_work() returns false without waiting, and brcms_free_timer() proceeds to kfree(t) while the callback still accesses t through container_of(). Add an explicit cancel_delayed_work_sync() after brcms_del_timer() to guarantee that any in-flight callback has completed before the timer structure is freed.
Timeline
ID reserved
By Linux
- 11 days later
· 11 days later
Published
- 13 days later
· 13 days later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
No CVSS score yet: neither the CNA, CISA nor NVD has scored this CVE. NVD status: Received.
- EPSS (exploitation in 30 days)
- 0.18% · top 93% of all CVEs (14 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: Not scored.
Affected products
- affected 5b435de0d786869c95d1962121af0d7df2542009 – < 10eeb0b29fd7f52487c9ae573e8d79c210a0095d
- affected 5b435de0d786869c95d1962121af0d7df2542009 – < 74acccc928851f69184271832d690607877122af
- affected 5b435de0d786869c95d1962121af0d7df2542009 – < 050d2486e8ed2c0a23b87249ccd23e8072721391
- affected 5b435de0d786869c95d1962121af0d7df2542009 – < 856dabd5f2617efb23c043be9e1b22a9e6e97c41
- affected 5b435de0d786869c95d1962121af0d7df2542009 – < 2a4841ff0b74b495cddd31ae324e922217fc2f13
- affected 5b435de0d786869c95d1962121af0d7df2542009 – < 1edb3ddd261e973a4d577c0547e63bfa25a8170d
- affected 5b435de0d786869c95d1962121af0d7df2542009 – < 777cb6bba59e875b16a1d8897a483a5fecfcd5d2
- affected 5b435de0d786869c95d1962121af0d7df2542009 – < 1eeca1d5e0920fbdad6449768fd2d4364e714180
- affected 3.2
- unaffected < 3.2
- unaffected 5.10.271 – ≤ 5.10.*
- unaffected 5.15.222 – ≤ 5.15.*
- unaffected 6.1.189 – ≤ 6.1.*
- unaffected 6.6.158 – ≤ 6.6.*
- unaffected 6.12.112 – ≤ 6.12.*
- unaffected 6.18.54 – ≤ 6.18.*
- unaffected 7.2.8 – ≤ 7.2.*
- unaffected 7.3 – ≤ *
References
References8
- https://git.kernel.org/stable/c/10eeb0b29fd7f52487c9ae573e8d79c210a0095d (opens in a new tab)
- https://git.kernel.org/stable/c/74acccc928851f69184271832d690607877122af (opens in a new tab)
- https://git.kernel.org/stable/c/050d2486e8ed2c0a23b87249ccd23e8072721391 (opens in a new tab)
- https://git.kernel.org/stable/c/856dabd5f2617efb23c043be9e1b22a9e6e97c41 (opens in a new tab)
- https://git.kernel.org/stable/c/2a4841ff0b74b495cddd31ae324e922217fc2f13 (opens in a new tab)
- https://git.kernel.org/stable/c/1edb3ddd261e973a4d577c0547e63bfa25a8170d (opens in a new tab)
- https://git.kernel.org/stable/c/777cb6bba59e875b16a1d8897a483a5fecfcd5d2 (opens in a new tab)
- https://git.kernel.org/stable/c/1eeca1d5e0920fbdad6449768fd2d4364e714180 (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2026-93124 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2026-98196)Record last updated .