CVE-2026-98708
What it is
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.
At a glance
- Exploit odds
- 0.2% chance of exploitation in the next 30 days (EPSS).
- Fix
- No patch or advisory is linked yet. Look at mitigations or restrict exposure.
Timeline
- PublishedDisclosed publicly on CVE.org and NVD
- Last updatedMost recent change to the record
Why it ranks here
- Exploited in the wild: no, CISA does not list it.
- Exploit odds: 0.2% in the next 30 days (EPSS).
- Severity: not scored yet.
- Fix: none linked yet, which raises it.
Details
- Published
- Last modified
- Exploit probability
- 0.2% · EPSS, next 30 days
- Record status
- Received
Is it in your code?
Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.
Read https://cve-list.com/agent/cve/CVE-2026-98708.md and follow it. Check whether this project is affected by CVE-2026-98708. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.
References
- https://git.kernel.org/stable/c/026ae72fa6d0f7e04951441026be473f22911b87
- https://git.kernel.org/stable/c/0fba8fbf5ab0bffc1866e5038aaab772d31d1584
- https://git.kernel.org/stable/c/1c82d0c5d509179ba2a4edfa096f516aebf960b0
- https://git.kernel.org/stable/c/21a688cbeae0e682f03e91f1e7a7eedd60d9d4f2
- https://git.kernel.org/stable/c/3412e9a800786d1dec4a58367db1cba275e7ef11
- https://git.kernel.org/stable/c/47864a9092fd6f6b3f312d1e5b233ecdc68b1bd8
- https://git.kernel.org/stable/c/624bf5338d8c2f55db455ce4f2543ca4a83fab03
- https://git.kernel.org/stable/c/afd1cdd16a25c7185b812a612ab7d5f2cbd1e086