CVE-2024-47738

low-risk

Published 2024-10-21

In the Linux kernel, the following vulnerability has been resolved: wifi: mac80211: don't use rate mask for offchannel TX either Like the commit ab9177d83c04 ("wifi: mac80211: don't use rate mask for scanning"), ignore incorrect settings to avoid no supported rate warning reported by syzbot. The syzbot did bisect and found cause is commit 9df66d5b9f45 ("cfg80211: fix default HE tx bitrate mask in 2G band"), which however corrects bitmask of HE MCS and recognizes correctly settings of empty legacy rate plus HE MCS rate instead of returning -EINVAL. As suggestions [1], follow the change of SCAN TX to consider this case of offchannel TX as well. [1] https://lore.kernel.org/linux-wireless/6ab2dc9c3afe753ca6fdcdd1421e7a1f47e87b84.camel@sipsolutions.net/T/#m2ac2a6d2be06a37c9c47a3d8a44b4f647ed4f024

Do I need to act?

0.01% chance of exploitation

EPSS score — low exploit probability

Not on CISA KEV list

No confirmed active exploitation reported to CISA

Patch status unknown

Check vendor advisories for fix availability and mitigation guidance

CVSS 3.3/10 Low

LOCAL / LOW complexity

Affected Products (1)

Linux Kernel

Affected Vendors

Linux

References (6)

Patch https://git.kernel.org/stable/c/3565ef215101ffadb5fe5394c70b1fca51376b25

Patch https://git.kernel.org/stable/c/43897111481b679508711d3ca881c4c6593e9247

Patch https://git.kernel.org/stable/c/aafca50e71dc8f3192a5bfb325135a7908f3ef9e

Patch https://git.kernel.org/stable/c/d54455a3a965feb547711aff7afd2ca5deadb99c

Patch https://git.kernel.org/stable/c/e7a7ef9a0742dbd0818d5b15fba2c5313ace765b

https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html

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low-risk

Severity 13/34 · Low

Exploitability 0/34 · Minimal

Exposure 5/34 · Minimal