CVE-2024-56570: linux kernel — Fix

Description

In the Linux kernel, the following vulnerability has been resolved: ovl: Filter invalid inodes with missing lookup function Add a check to the ovl_dentry_weird() function to prevent the processing of directory inodes that lack the lookup function. This is important because such inodes can cause errors in overlayfs when passed to the lowerstack.

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CVSS v3.1 Score

7.8

HIGH

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

Affected Products

Vendor	Product	Versions
linux	linux_kernel	< 5.4.287
linux	linux_kernel	5.5 — 5.10.231
linux	linux_kernel	5.11 — 5.15.174
linux	linux_kernel	5.16 — 6.1.120
linux	linux_kernel	6.2 — 6.6.64
linux	linux_kernel	6.7 — 6.12.4

References

Advisories & Patches

https://git.kernel.org/stable/c/065bf5dd21639f80e68450de16bda829784dbb8c https://git.kernel.org/stable/c/5f86e79c0b2287ffdabe6c1b305a36c4e0f40fe3 https://git.kernel.org/stable/c/72014e7745cc8250bb8f27bd78694dfd3f1b5773 https://git.kernel.org/stable/c/749eac5a6687ec99116e0691d0d71225254654e3 https://git.kernel.org/stable/c/c8b359dddb418c60df1a69beea01d1b3322bfe83 https://git.kernel.org/stable/c/f9248e2f73fb4afe08324485e98c815ac084d166 https://git.kernel.org/stable/c/ff43d008bbf9b27ada434d6455f039a5ef6cee53

Other References

https://lists.debian.org/debian-lts-announce/2025/03/msg00001.html https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html

Frequently Asked Questions

What is CVE-2024-56570? +

In the Linux kernel, the following vulnerability has been resolved: ovl: Filter invalid inodes with missing lookup function Add a check to the ovl_dentry_weird() function to prevent the processing of directory inodes that lack the lookup function. This is important because such inodes can cause errors in overlayfs when passed to the lowerstack. It has a CVSS v3.1 base score of 7.8 (HIGH).

How severe is CVE-2024-56570? +

CVE-2024-56570 has a CVSS v3.1 score of 7.8 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.

What products are affected by CVE-2024-56570? +

CVE-2024-56570 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-2024-56570? +

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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