CVE-2024-57991

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

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 [...]

5.5

CVSS

Severity: Medium

CVSS 3.1 •

EPSS 0.03%

Affected: Linux Linux

References

Link	Tags
https://git.kernel.org/stable/c/223ba95fdcd3c6090e2bd51dce66abb6dd4f9df9	patch mailing list
https://git.kernel.org/stable/c/01d2d34e9fcc9897081c3c16a666f793c8a38c58	patch mailing list
https://git.kernel.org/stable/c/e4790b3e314a4814f1680a5dc552031fb199b878	patch mailing list

Frequently Asked Questions

What is the severity of CVE-2024-57991?: CVE-2024-57991 has been scored as a medium severity vulnerability.
How to fix CVE-2024-57991?: To fix CVE-2024-57991, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2024-57991 being actively exploited in the wild?: As for now, there are no information to confirm that CVE-2024-57991 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2024-57991?: CVE-2024-57991 affects Linux Linux, Linux Linux.

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