CVE-2024-38566: linux kernel — Fix

Description

In the Linux kernel, the following vulnerability has been resolved: bpf: Fix verifier assumptions about socket->sk The verifier assumes that 'sk' field in 'struct socket' is valid and non-NULL when 'socket' pointer itself is trusted and non-NULL. That may not be the case when socket was just created and passed to LSM socket_accept hook. Fix this verifier assumption and adjust tests.

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CVSS v3.1 Score

5.5

MEDIUM

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

Affected Products

Vendor	Product	Versions
linux	linux_kernel	6.4 — 6.6.33
linux	linux_kernel	6.7 — 6.8.12
linux	linux_kernel	6.9 — 6.9.3

References

Advisories & Patches

https://git.kernel.org/stable/c/0db63c0b86e981a1e97d2596d64ceceba1a5470e https://git.kernel.org/stable/c/39f8a29330f433000e716eefc4b9abda05b71a82 https://git.kernel.org/stable/c/6f5ae91172a93abac9720ba94edf3ec8f4d7f24f https://git.kernel.org/stable/c/c58ccdd2483a1d990748cdaf94206b5d5986a001 https://git.kernel.org/stable/c/0db63c0b86e981a1e97d2596d64ceceba1a5470e https://git.kernel.org/stable/c/39f8a29330f433000e716eefc4b9abda05b71a82 https://git.kernel.org/stable/c/6f5ae91172a93abac9720ba94edf3ec8f4d7f24f https://git.kernel.org/stable/c/c58ccdd2483a1d990748cdaf94206b5d5986a001

Frequently Asked Questions

What is CVE-2024-38566? +

In the Linux kernel, the following vulnerability has been resolved: bpf: Fix verifier assumptions about socket->sk The verifier assumes that 'sk' field in 'struct socket' is valid and non-NULL when 'socket' pointer itself is trusted and non-NULL. That may not be the case when socket was just created and passed to LSM socket_accept hook. Fix this verifier assumption and adjust tests. It has a CVSS v3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2024-38566? +

CVE-2024-38566 has a CVSS v3.1 score of 5.5 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

What products are affected by CVE-2024-38566? +

CVE-2024-38566 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-2024-38566? +

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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CVE-2024-38566