What’s Vulnerable › Vulnerabilities

CVE-2024-56570: ovl: Filter invalid inodes with missing lookup function

• Severity: high (CVSS 7.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2024-12-27 · updated 2026-10-15

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.

Affected products

• Linux kernel: before 5.4.287; from 5.5 before 5.10.231; from 5.11 before 5.15.174; from 5.16 before 6.1.120; from 6.2 before 6.6.64; from 6.7 before 6.12.4 — fixed in 5.10.231, 5.15.174, 5.4.287, 6.1.120, 6.12.4, 6.6.64

How to fix

Upgrade to a fixed version: Linux kernel 5.10.231, 5.15.174, 5.4.287, 6.1.120. Check the vendor advisory for mitigations.

References

• 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
• https://lists.debian.org/debian-lts-announce/2025/03/msg00001.html
• https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html
• https://cert-portal.siemens.com/productcert/html/ssa-355557.html
• https://cert-portal.siemens.com/productcert/html/ssa-398330.html

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