CVE-2024-26634: linux kernel — Fix

Description

In the Linux kernel, the following vulnerability has been resolved: net: fix removing a namespace with conflicting altnames Mark reports a BUG() when a net namespace is removed. kernel BUG at net/core/dev.c:11520! Physical interfaces moved outside of init_net get "refunded" to init_net when that namespace disappears. The main interface name may get overwritten in the process if it would have conflicted. We need to also discard all conflicting altnames. Recent fixes addressed ensuring that altnames get moved with the main interface, which surfaced this problem.

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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:N/A:H

Affected Products

Vendor	Product	Versions
linux	linux_kernel	6.1.60 — 6.1.76
linux	linux_kernel	6.6 — 6.6.15
linux	linux_kernel	6.7 — 6.7.3
linux	linux_kernel	All

References

Advisories & Patches

https://git.kernel.org/stable/c/8072699aa9e67d1727692cfb3c347263bb627fb9 https://git.kernel.org/stable/c/a2232f29bf52c24f827865b3c90829c44b6c695b https://git.kernel.org/stable/c/d09486a04f5da0a812c26217213b89a3b1acf836 https://git.kernel.org/stable/c/e855dded4b70d1975ee7b9fed0c700391e3c8ea6 https://git.kernel.org/stable/c/8072699aa9e67d1727692cfb3c347263bb627fb9 https://git.kernel.org/stable/c/a2232f29bf52c24f827865b3c90829c44b6c695b https://git.kernel.org/stable/c/d09486a04f5da0a812c26217213b89a3b1acf836 https://git.kernel.org/stable/c/e855dded4b70d1975ee7b9fed0c700391e3c8ea6

Frequently Asked Questions

What is CVE-2024-26634? +

In the Linux kernel, the following vulnerability has been resolved: net: fix removing a namespace with conflicting altnames Mark reports a BUG() when a net namespace is removed. kernel BUG at net/core/dev.c:11520! Physical interfaces moved outside of init_net get "refunded" to init_net when that namespace disappears. The main interface name may get overwritten in the process if it would have conflicted. We need to also discard all conflicting altnames. Recent fixes addressed ensuring that altnames get moved with the main interface, which surfaced this problem. It has a CVSS v3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2024-26634? +

CVE-2024-26634 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-2024-26634? +

CVE-2024-26634 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-2024-26634? +

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-2024-26634