PT-2025-51575 · Linux+3 · Linux Kernel+3
Published
2025-10-28
·
Updated
2026-03-27
·
CVE-2025-40359
CVSS v2.0
4.6
Medium
| Vector | AV:L/AC:L/Au:S/C:N/I:N/A:C |
Name of the Vulnerable Software and Affected Versions
Linux kernel (affected versions not specified)
Description
The Linux kernel contains a flaw related to out-of-bounds access when running the "perf mem record" command on certain platforms like CWF. Specifically, the issue occurs due to an attempt to access an x86 hybrid pmu structure that does not exist on non-hybrid platforms. The root cause is a missing check for hybrid platform support before accessing the structure, leading to a global-out-of-bounds read. The fix involves adding an
is hybrid() check to prevent accessing the non-existent structure.Recommendations
At the moment, there is no information about a newer version that contains a fix for this vulnerability.
Exploit
Out of bounds Read
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Weakness Enumeration
Related Identifiers
Affected Products
Debian
Linuxmint
Linux Kernel
Ubuntu