CVE-2026-98707wifi: mac80211: shut down RX BA session timer on teardown
- —Not scoredno CVSS score yet
- 0.17%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: mac80211: shut down RX BA session timer on teardown Tearing down an RX BA session can leave the session timer queued on a freed tid_rx. Later timer-wheel processing and the timer callback itself then run against freed memory. An RX BAR handler can dereference tid_rx under RCU before teardown unpublishes it and stay in its read-side critical section while teardown deletes the session timer. The stale handler can then rearm the timer after timer_delete_sync() returns and before the RCU callback frees tid_rx. Use timer_shutdown_sync() so rearm attempts become ineffective once teardown starts. Keep reorder_timer unchanged: teardown marks the session removed under reorder_lock and its release path checks that state before rearming. session_timer has no equivalent guard because ieee80211_rx_h_ctrl() rearms it before taking reorder_lock.
Timeline
ID reserved
By Linux
- 23 days later
· 23 days later
Published
- 12 days later
· 12 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)
- 0.17% · top 93% of all CVEs (13 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: Not scored.
Affected products
- affected a87f736d942c86255e3088c606f0e3eab6bbf784 – < 225c67a0bea0bd42f568f4842e747bb7f4bafebb
- affected a87f736d942c86255e3088c606f0e3eab6bbf784 – < 18cf74311f3f0bc77384549d270c489f64c6510a
- affected a87f736d942c86255e3088c606f0e3eab6bbf784 – < d0da6ab1fc53a68025929baf0947519c6c1684dc
- affected a87f736d942c86255e3088c606f0e3eab6bbf784 – < 7bb2a5bd4f07192fca35644fab7d49a17bfbc861
- affected a87f736d942c86255e3088c606f0e3eab6bbf784 – < 481f9230284c27052b59c587069f232c5d84779e
- affected a87f736d942c86255e3088c606f0e3eab6bbf784 – < 09b7d5e4f88504e62ddf4ff31ebeebb3b87578ba
- affected a87f736d942c86255e3088c606f0e3eab6bbf784 – < e588e83e5c7a0f6d7a77dbbb58927c8c8cfd598e
- affected 2.6.36
- unaffected < 2.6.36
- unaffected 5.15.224 – ≤ 5.15.*
- unaffected 6.1.191 – ≤ 6.1.*
- unaffected 6.6.160 – ≤ 6.6.*
- unaffected 6.12.113 – ≤ 6.12.*
- unaffected 6.18.56 – ≤ 6.18.*
- unaffected 7.2.10 – ≤ 7.2.*
- unaffected 7.3 – ≤ *
References
References7
- https://git.kernel.org/stable/c/225c67a0bea0bd42f568f4842e747bb7f4bafebb (opens in a new tab)
- https://git.kernel.org/stable/c/18cf74311f3f0bc77384549d270c489f64c6510a (opens in a new tab)
- https://git.kernel.org/stable/c/d0da6ab1fc53a68025929baf0947519c6c1684dc (opens in a new tab)
- https://git.kernel.org/stable/c/7bb2a5bd4f07192fca35644fab7d49a17bfbc861 (opens in a new tab)
- https://git.kernel.org/stable/c/481f9230284c27052b59c587069f232c5d84779e (opens in a new tab)
- https://git.kernel.org/stable/c/09b7d5e4f88504e62ddf4ff31ebeebb3b87578ba (opens in a new tab)
- https://git.kernel.org/stable/c/e588e83e5c7a0f6d7a77dbbb58927c8c8cfd598e (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-2026-103961 (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-2026-98707)Record last updated .