CVE-2026-98339
Description
In the Linux kernel, the following vulnerability has been resolved: wifi: cfg80211: don't filter by BSS type when removing stale entries When an assoc AP switches to a channel that already has a BSS entry, cfg80211_update_assoc_bss_entry() removes that entry before rehashing the real one, since the two would otherwise collide in the BSS rbtree. The lookup for that entry also required it to match the connection's BSS type, so an entry advertising e.g. the IBSS capability bit was left in place, and the following cfg80211_rehash_bss() then ran into it: WARN_ON(!cmp) Changing the type shouldn't really happen, but can be triggered by a rogue AP/device, so drop the check and remove any entries matching the comparison.
How to fix
- Linux Linux6ef87a853327434ae1cd9c5a2c27a557fb4047fc, 1380ee3a202dbb9f8e8b3c3b87eb410450d57799, fb445ec7480da5d2b82bf681e3b4313603722729, 65fdb973bd905bc3f5cb045a04c1828f2d2a7e24, 64e23a36d8f04811372365b44cfca325f8e0f4bb, 6d2fd26185678038ef2ea11dd4d2e6eccbf2dd25, 0aa44982125c86b47961be5ac1c82eddab8080f3, b377e1000d963e7182a987082b4b06580bd7ac84 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Linux Linux | 0afd425b1b64251f19b5d8d8b49bf56fefbc643f ≤ v < 6ef87a853327434ae1cd9c5a2c27a557fb4047fc, 0afd425b1b64251f19b5d8d8b49bf56fefbc643f ≤ v < 1380ee3a202dbb9f8e8b3c3b87eb410450d57799, 0afd425b1b64251f19b5d8d8b49bf56fefbc643f ≤ v < fb445ec7480da5d2b82bf681e3b4313603722729, 0afd425b1b64251f19b5d8d8b49bf56fefbc643f ≤ v < 65fdb973bd905bc3f5cb045a04c1828f2d2a7e24, 0afd425b1b64251f19b5d8d8b49bf56fefbc643f ≤ v < 64e23a36d8f04811372365b44cfca325f8e0f4bb, 0afd425b1b64251f19b5d8d8b49bf56fefbc643f ≤ v < 6d2fd26185678038ef2ea11dd4d2e6eccbf2dd25, 0afd425b1b64251f19b5d8d8b49bf56fefbc643f ≤ v < 0aa44982125c86b47961be5ac1c82eddab8080f3, 0afd425b1b64251f19b5d8d8b49bf56fefbc643f ≤ v < b377e1000d963e7182a987082b4b06580bd7ac84, 5.4 | 6ef87a853327434ae1cd9c5a2c27a557fb4047fc, 1380ee3a202dbb9f8e8b3c3b87eb410450d57799, fb445ec7480da5d2b82bf681e3b4313603722729, 65fdb973bd905bc3f5cb045a04c1828f2d2a7e24, 64e23a36d8f04811372365b44cfca325f8e0f4bb, 6d2fd26185678038ef2ea11dd4d2e6eccbf2dd25, 0aa44982125c86b47961be5ac1c82eddab8080f3, b377e1000d963e7182a987082b4b06580bd7ac84 |
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