CVE-2026-98708wifi: mac80211: keep paired old chanctx alive
- —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: mac80211: keep paired old chanctx alive An in-place replacement keeps reciprocal replace_ctx pointers between the old WILL_BE_REPLACED chanctx and the new REPLACES_OTHER chanctx. However, the early free paths only consider assigned and reserved link users when deciding whether to free the old chanctx. That lets the old chanctx be freed too early while the replacement partner still points back to it, either when the last assigned link is released or when that link successfully reassigns to another existing context. Later unreserve and switch-finalization paths can then follow a stale replace_ctx pointer. Keep a paired old chanctx alive until the replacement pair has been torn down. Apply the same check to both __ieee80211_link_release_channel() and ieee80211_link_use_reserved_reassign(). If the replacement is later abandoned, ieee80211_link_unreserve_chanctx() already tears down the pairing before freeing the old chanctx once no users remain.
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)
- 0.18% · 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 5bcae31d9cb1ebfad3ad5a3eea04c8cdc329a04f – < 026ae72fa6d0f7e04951441026be473f22911b87
- affected 5bcae31d9cb1ebfad3ad5a3eea04c8cdc329a04f – < 624bf5338d8c2f55db455ce4f2543ca4a83fab03
- affected 5bcae31d9cb1ebfad3ad5a3eea04c8cdc329a04f – < 0fba8fbf5ab0bffc1866e5038aaab772d31d1584
- affected 5bcae31d9cb1ebfad3ad5a3eea04c8cdc329a04f – < 47864a9092fd6f6b3f312d1e5b233ecdc68b1bd8
- affected 5bcae31d9cb1ebfad3ad5a3eea04c8cdc329a04f – < 21a688cbeae0e682f03e91f1e7a7eedd60d9d4f2
- affected 5bcae31d9cb1ebfad3ad5a3eea04c8cdc329a04f – < 1c82d0c5d509179ba2a4edfa096f516aebf960b0
- affected 5bcae31d9cb1ebfad3ad5a3eea04c8cdc329a04f – < afd1cdd16a25c7185b812a612ab7d5f2cbd1e086
- affected 5bcae31d9cb1ebfad3ad5a3eea04c8cdc329a04f – < 3412e9a800786d1dec4a58367db1cba275e7ef11
- affected 3.17
- unaffected < 3.17
- unaffected 5.10.273 – ≤ 5.10.*
- 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
References8
- https://git.kernel.org/stable/c/026ae72fa6d0f7e04951441026be473f22911b87 (opens in a new tab)
- https://git.kernel.org/stable/c/624bf5338d8c2f55db455ce4f2543ca4a83fab03 (opens in a new tab)
- https://git.kernel.org/stable/c/0fba8fbf5ab0bffc1866e5038aaab772d31d1584 (opens in a new tab)
- https://git.kernel.org/stable/c/47864a9092fd6f6b3f312d1e5b233ecdc68b1bd8 (opens in a new tab)
- https://git.kernel.org/stable/c/21a688cbeae0e682f03e91f1e7a7eedd60d9d4f2 (opens in a new tab)
- https://git.kernel.org/stable/c/1c82d0c5d509179ba2a4edfa096f516aebf960b0 (opens in a new tab)
- https://git.kernel.org/stable/c/afd1cdd16a25c7185b812a612ab7d5f2cbd1e086 (opens in a new tab)
- https://git.kernel.org/stable/c/3412e9a800786d1dec4a58367db1cba275e7ef11 (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-2026-103962 (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)
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[](https://cveledger.app/cve/CVE-2026-98708)Record last updated .