Bug 1224881 (CVE-2021-47251)

Summary:	VUL-0: CVE-2021-47251: kernel: mac80211: fix skb length check in ieee80211_scan_rx()
Product:	[Novell Products] SUSE Security Incidents	Reporter:	SMASH SMASH <smash_bz>
Component:	Incidents	Assignee:	Security Team bot <security-team>
Status:	RESOLVED FIXED	QA Contact:	Security Team bot <security-team>
Severity:	Normal
Priority:	P3 - Medium	CC:	andrea.mattiazzo, mhocko
Version:	unspecified
Target Milestone:	---
Hardware:	Other
OS:	Other
URL:	https://smash.suse.de/issue/406880/
Whiteboard:
Found By:	Security Response Team	Services Priority:
Business Priority:		Blocker:	---
Marketing QA Status:	---	IT Deployment:	---

Description SMASH SMASH 2024-05-22 09:30:13 UTC

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

mac80211: fix skb length check in ieee80211_scan_rx()

Replace hard-coded compile-time constants for header length check
with dynamic determination based on the frame type. Otherwise, we
hit a validation WARN_ON in cfg80211 later.

[style fixes, reword commit message]

References:
http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2021-47251
https://www.cve.org/CVERecord?id=CVE-2021-47251
https://git.kernel.org/stable/c/5a1cd67a801cf5ef989c4783e07b86a25b143126
https://git.kernel.org/stable/c/d1b949c70206178b12027f66edc088d40375b5cb
https://git.kernel.org/stable/c/e298aa358f0ca658406d524b6639fe389cb6e11e
https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2021/CVE-2021-47251.mbox

Comment 2 Michal Hocko 2024-05-23 16:18:33 UTC

nothing to be done

Comment 3 Andrea Mattiazzo 2024-05-24 10:50:26 UTC

All done, closing.