CVE-2024-53101: fs: Fix uninitialized value issue in from_kuid and from_kgid

Severity: medium (CVSS 5.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2024-11-25 · updated 2026-10-15
Weakness: CWE-908

Description

In the Linux kernel, the following vulnerability has been resolved: fs: Fix uninitialized value issue in from_kuid and from_kgid ocfs2_setattr() uses attr->ia_mode, attr->ia_uid and attr->ia_gid in a trace point even though ATTR_MODE, ATTR_UID and ATTR_GID aren't set. Initialize all fields of newattrs to avoid uninitialized variables, by checking if ATTR_MODE, ATTR_UID, ATTR_GID are initialized, otherwise 0.

Affected products

Linux kernel: before 4.19.324; from 4.20 before 5.4.286; from 5.5 before 5.10.230; from 5.11 before 5.15.173; from 5.16 before 6.1.118; from 6.2 before 6.6.62 — fixed in 4.19.324, 5.10.230, 5.15.173, 5.4.286, 6.1.118, 6.11.9

How to fix

Upgrade to a fixed version: Linux kernel 4.19.324, 5.10.230, 5.15.173, 5.4.286. Check the vendor advisory for mitigations.

References

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