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CVE-2025-21636 Detail

Description

In the Linux kernel, the following vulnerability has been resolved: sctp: sysctl: plpmtud_probe_interval: avoid using current->nsproxy As mentioned in a previous commit of this series, using the 'net' structure via 'current' is not recommended for different reasons: - Inconsistency: getting info from the reader's/writer's netns vs only from the opener's netns. - current->nsproxy can be NULL in some cases, resulting in an 'Oops' (null-ptr-deref), e.g. when the current task is exiting, as spotted by syzbot [1] using acct(2). The 'net' structure can be obtained from the table->data using container_of(). Note that table->data could also be used directly, as this is the only member needed from the 'net' structure, but that would increase the size of this fix, to use '*data' everywhere 'net->sctp.probe_interval' is used.


Metrics

NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

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Hyperlink Resource
https://git.kernel.org/stable/c/1dc5da6c4178f3e4b95c631418f72de9f86c0449
https://git.kernel.org/stable/c/284a221f8fa503628432c7bb5108277c688c6ffa
https://git.kernel.org/stable/c/44ee8635922b6eb940faddb961a8347c6857d722
https://git.kernel.org/stable/c/6259d2484d0ceff42245d1f09cc8cb6ee72d847a
https://git.kernel.org/stable/c/bcf8c60074e81ed2ac2d35130917175a3949c917

Weakness Enumeration

CWE-ID CWE Name Source

Change History

2 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2025-21636
NVD Published Date:
01/19/2025
NVD Last Modified:
01/23/2025
Source:
kernel.org