Description
In the Linux kernel, the following vulnerability has been resolved:
wifi: iwlwifi: mvm: fix 6 GHz scan construction
If more than 255 colocated APs exist for the set of all APs found during 2.4/5 GHz scanning, then the 6 GHz scan construction will loop forever since the loop variable has type u8, which can never reach the number found when that's bigger than 255, and is stored in a u32 variable. Also move it into the loops to have a smaller scope.
Using a u32 there is fine, we limit the number of APs in the scan list and each has a limit on the number of RNR entries due to the frame size. With a limit of 1000 scan results, a frame size upper bound of 4096 (really it's more like ~2300) and a TBTT entry size of at least 11, we get an upper bound for the number of ~372k, well in the bounds of a u32.
Metrics
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HWeakness enumeration
Affected software
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux | >= eae94cf82d7456b57fa9fd55c1edb8a726dcc19c, < 2ac15e5a8f42fed5d90ed9e1197600913678c50f; >= eae94cf82d7456b57fa9fd55c1edb8a726dcc19c, < cde8a7eb5c6762264ff0f4433358e0a0d250c875; >= eae94cf82d7456b57fa9fd55c1edb8a726dcc19c, < fc621e7a043de346c33bd7ae7e2e0c651d6152ef; >= eae94cf82d7456b57fa9fd55c1edb8a726dcc19c, < 2ccd5badadab2d586e91546bf5af3deda07fef1f; >= eae94cf82d7456b57fa9fd55c1edb8a726dcc19c, < 7245012f0f496162dd95d888ed2ceb5a35170f1a |
| Linux | Linux | 5.11 |
References
- https://git.kernel.org/stable/c/2ac15e5a8f42fed5d90ed9e1197600913678c50fPatch
- https://git.kernel.org/stable/c/2ccd5badadab2d586e91546bf5af3deda07fef1fPatch
- https://git.kernel.org/stable/c/7245012f0f496162dd95d888ed2ceb5a35170f1aPatch
- https://git.kernel.org/stable/c/cde8a7eb5c6762264ff0f4433358e0a0d250c875Patch
- https://git.kernel.org/stable/c/fc621e7a043de346c33bd7ae7e2e0c651d6152efPatch
- https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html
Timeline
- Published
- Nov 19, 2024
- Last modified
- Jun 17, 2026
- NVD status
- Modified