PT-2025-4316 · Linux+5 · Linux Kernel+5
Published
2025-01-09
·
Updated
2026-05-26
·
CVE-2025-21635
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, specifically in the RDS component. The issue was related to the use of
current->nsproxy, which is not recommended due to inconsistency and potential null pointer dereferences. The problem occurred when getting information from the reader's/writer's netns versus only from the opener's netns, and current->nsproxy can be NULL in some cases, resulting in an 'Oops' (null-ptr-deref). The per-netns structure can be obtained from the table->data using container of(), then the 'net' one can be retrieved from the listen socket (if available).Recommendations
At the moment, there is no information about a newer version that contains a fix for this vulnerability.
Exploit
NULL Pointer Dereference
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Weakness Enumeration
Related Identifiers
Affected Products
Alt Linux
Debian
Linuxmint
Linux Kernel
Suse
Ubuntu