What’s Vulnerable › Vulnerabilities

CVE-2026-80598: ntfs3: fix out-of-bounds read in decompress_lznt

• 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: 2026-08-28 · updated 2026-10-16

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.

Affected products

• Linux kernel: 5.15 — fixed in 7.2

How to fix

Upgrade to a fixed version: Linux kernel 7.2. Check the vendor advisory for mitigations.

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

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