CVE-2024-47738

Description

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/[email protected]/T/#m2ac2a6d2be06a37c9c47a3d8a44b4f647ed4f024

CVSS v3.1 Score

3.3

LOW

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

Affected Products

Vendor	Product	Versions
linux	linux_kernel	5.10.51 — 5.11
linux	linux_kernel	5.12.18 — 5.13
linux	linux_kernel	5.13.3 — 5.14
linux	linux_kernel	5.14 — 6.1.113
linux	linux_kernel	6.2 — 6.6.54
linux	linux_kernel	6.7 — 6.10.13
linux	linux_kernel	6.11 — 6.11.2

References

Advisories & Patches

https://git.kernel.org/stable/c/3565ef215101ffadb5fe5394c70b1fca51376b25 https://git.kernel.org/stable/c/43897111481b679508711d3ca881c4c6593e9247 https://git.kernel.org/stable/c/aafca50e71dc8f3192a5bfb325135a7908f3ef9e https://git.kernel.org/stable/c/d54455a3a965feb547711aff7afd2ca5deadb99c https://git.kernel.org/stable/c/e7a7ef9a0742dbd0818d5b15fba2c5313ace765b

Other References

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

Frequently Asked Questions

What is CVE-2024-47738? +

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/[email protected]/T/#m2ac2a6d2be06a37c9c47a3d8a44b4f647ed4f024 It has a CVSS v3.1 base score of 3.3 (LOW).

How severe is CVE-2024-47738? +

CVE-2024-47738 has a CVSS v3.1 score of 3.3 out of 10, rated LOW. This is a low-severity vulnerability with limited impact.

What products are affected by CVE-2024-47738? +

CVE-2024-47738 affects products from linux, specifically: linux_kernel. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2024-47738? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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