CVE-2026-80598 (CVSS 7.8)

Description

In the Linux kernel, the following vulnerability has been resolved: ntfs3: fix out-of-bounds read in decompress_lznt decompress_lznt() does not validate array index bounds before accessing the decompression table. A corrupted NTFS3 image with invalid compressed data can trigger an out-of-bounds read. Add index bounds checking to prevent the OOB access.

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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

0.0013

Probability of exploitation

0.03%

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/1113fa5b01a47a1a4cdbb9c695197ca6215f02a8 https://git.kernel.org/stable/c/61415ffa365d2eca6986914afd0d1412444aa1dd https://git.kernel.org/stable/c/7160a57192fb16d7a6fa9b7f5c7ac341d2444a89 https://git.kernel.org/stable/c/a93980141253c932aa6ae5d4422d90e0162dc774 https://git.kernel.org/stable/c/bd77afca2ae9b6d44d37902e3ad672ebb028b070 https://git.kernel.org/stable/c/c694f8ea2611e7413b3f04ee47e04a9b7b45817b https://git.kernel.org/stable/c/ff05a98150ebb2b03919a9c05c576681e86abbb7

Frequently Asked Questions

What is CVE-2026-80598? +

In the Linux kernel, the following vulnerability has been resolved: ntfs3: fix out-of-bounds read in decompress_lznt decompress_lznt() does not validate array index bounds before accessing the decompression table. A corrupted NTFS3 image with invalid compressed data can trigger an out-of-bounds read. Add index bounds checking to prevent the OOB access. It has a CVSS v3.1 base score of 7.8 (HIGH).

How severe is CVE-2026-80598? +

CVE-2026-80598 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 0.0013, placing it in the 0th percentile for exploitation probability.

How do I check if I'm vulnerable to CVE-2026-80598? +

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-2026-80598