Loop with Unreachable Exit Condition ('Infinite Loop') Affecting kernel-doc package, versions *
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Test your applications- Snyk ID SNYK-RHEL8-KERNELDOC-8406456
- published 26 Nov 2024
- disclosed 19 Nov 2024
Introduced: 19 Nov 2024
New CVE-2024-53055 Open this link in a new tabHow to fix?
There is no fixed version for RHEL:8 kernel-doc.
NVD Description
Note: Versions mentioned in the description apply only to the upstream kernel-doc package and not the kernel-doc package as distributed by RHEL.
See How to fix? for RHEL:8 relevant fixed versions and status.
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.
References
- https://access.redhat.com/security/cve/CVE-2024-53055
- https://git.kernel.org/stable/c/2ac15e5a8f42fed5d90ed9e1197600913678c50f
- https://git.kernel.org/stable/c/2ccd5badadab2d586e91546bf5af3deda07fef1f
- https://git.kernel.org/stable/c/7245012f0f496162dd95d888ed2ceb5a35170f1a
- https://git.kernel.org/stable/c/cde8a7eb5c6762264ff0f4433358e0a0d250c875
- https://git.kernel.org/stable/c/fc621e7a043de346c33bd7ae7e2e0c651d6152ef