PT-2025-13218 · Linux+6 · Linux Kernel+6
Published
2025-02-24
·
Updated
2026-05-26
·
CVE-2025-21881
CVSS v3.1
5.5
Medium
| Vector | AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
Name of the Vulnerable Software and Affected Versions
Linux kernel (affected versions not specified)
Description
A vulnerability in the Linux kernel has been resolved, related to the uprobes feature. The issue occurs when the shared zeropage is not properly rejected in the uprobe write opcode() function, leading to incorrect RSS counts and potential crashes. The vulnerability can be triggered by a specific syzkaller test case, which can cause a crash with a "Bad page state" error. The issue is rare, but it can theoretically lead to warnings and errors, including "Bad rss-count" and "Bad page state" reports.
Recommendations
At the moment, there is no information about a newer version that contains a fix for this vulnerability.
Exploit
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Weakness Enumeration
Related Identifiers
Affected Products
Astra Linux
Debian
Linuxmint
Linux Kernel
Red Os
Suse
Ubuntu