Bug 1224881 (CVE-2021-47251) - VUL-0: CVE-2021-47251: kernel: mac80211: fix skb length check in ieee80211_scan_rx()
Summary: VUL-0: CVE-2021-47251: kernel: mac80211: fix skb length check in ieee80211_sc...
Status: RESOLVED FIXED
Alias: CVE-2021-47251
Product: SUSE Security Incidents
Classification: Novell Products
Component: Incidents (show other bugs)
Version: unspecified
Hardware: Other Other
: P3 - Medium : Normal
Target Milestone: ---
Assignee: Security Team bot
QA Contact: Security Team bot
URL: https://smash.suse.de/issue/406880/
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Reported: 2024-05-22 09:30 UTC by SMASH SMASH
Modified: 2024-05-24 10:50 UTC (History)
2 users (show)

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Found By: Security Response Team
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Marketing QA Status: ---
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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.