CVE-2026-80591 (CVSS 7.8)

Description

In the Linux kernel, the following vulnerability has been resolved: f2fs: fix listxattr handling of corrupted xattr entries Validate the xattr entry before reading its fields in f2fs_listxattr(). Return -EFSCORRUPTED when the entry is outside the valid xattr storage area instead of returning a successful partial result.

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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

EPSS — Exploit Prediction

0.0018

Probability of exploitation

0.06%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

References

Other References

https://git.kernel.org/stable/c/2770041f34b52334ea63351ffb1cc2007a9de46e https://git.kernel.org/stable/c/3c0dbfecd859fd02fe9008f33a83146102ccd9ba https://git.kernel.org/stable/c/5ef5bc304f23c3fe255d4936472378dcb74d0e94 https://git.kernel.org/stable/c/7dd01f7d0291583e3e5420c95c7d584e114899bd https://git.kernel.org/stable/c/7dfac47e4189692f35230f3064acf2540e6d75fe https://git.kernel.org/stable/c/c8a10f174316e80d577e6549099b71a7a2111f3f https://git.kernel.org/stable/c/dfa4891c27bccbd83d511a065721e85621f275a1 https://git.kernel.org/stable/c/ec9f79c8d5b28a928e65b67cd138c841571cf502

Frequently Asked Questions

What is CVE-2026-80591? +

In the Linux kernel, the following vulnerability has been resolved: f2fs: fix listxattr handling of corrupted xattr entries Validate the xattr entry before reading its fields in f2fs_listxattr(). Return -EFSCORRUPTED when the entry is outside the valid xattr storage area instead of returning a successful partial result. It has a CVSS v3.1 base score of 7.8 (HIGH).

How severe is CVE-2026-80591? +

CVE-2026-80591 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. The EPSS score is 0.0018, placing it in the 0th percentile for exploitation probability.

How do I check if I'm vulnerable to CVE-2026-80591? +

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.

CVE-2026-80591