CVE-2024-57991

/// Technical description

In the Linux kernel, the following vulnerability has been resolved:

wifi: rtw89: chan: fix soft lockup in rtw89_entity_recalc_mgnt_roles()

During rtw89_entity_recalc_mgnt_roles(), there is a normalizing process

which will re-order the list if an entry with target pattern is found.

And once one is found, should have aborted the list_for_each_entry. But,

`break` just aborted the inner for-loop. The outer list_for_each_entry

still continues. Normally, only the first entry will match the target

pattern, and the re-ordering will change nothing, so there won't be

soft lockup. However, in some special cases, soft lockup would happen.

Fix it by `goto fill` to break from the list_for_each_entry.

The following is a sample of kernel log for this problem.

watchdog: BUG: soft lockup - CPU#1 stuck for 26s! [wpa_supplicant:2055]

[...]

RIP: 0010:rtw89_entity_recalc ([...] chan.c:392 chan.c:479) rtw89_core

[...]

/// Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

/// References