PT-2026-52270 · Linux · Linux Kernel

Syzbot

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CVE-2026-53174

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Published

2026-06-25

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Updated

2026-07-28

CVSS v3.1

7.8

High

VectorAV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Name of the Vulnerable Software and Affected Versions Linux kernel (affected versions not specified)
Description An issue exists in the ovl iterate merged() function where the err variable is assigned the value of PTR ERR(cache) before verifying if cache is an error using IS ERR(cache). When the operation is successful, err retains a truncated cache pointer, which may then be returned as an incorrect non-zero error. This behavior can be triggered during an overlay-on-overlay readdir operation involving the getdents64 system call and the ovl cache get() function.
Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

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Related Identifiers

CVE-2026-53174
USN-8489-1
USN-8566-1
USN-8569-1
USN-8593-1
USN-8603-1
USN-8618-1

Affected Products

Linux Kernel