CVE-2025-37845

tracing: fprobe events: Fix possible UAF on modules

State: Published
Severity: 7.8 High
Published: May 9, 2025
Updated: Aug 5, 2026
Reserved: Apr 16, 2025

Description

In the Linux kernel, the following vulnerability has been resolved:

tracing: fprobe events: Fix possible UAF on modules

Commit ac91052f0ae5 ("tracing: tprobe-events: Fix leakage of module refcount") moved try_module_get() from __find_tracepoint_module_cb() to find_tracepoint() caller, but that introduced a possible UAF because the module can be unloaded before try_module_get(). In this case, the module object should be freed too. Thus, try_module_get() does not only fail but may access to the freed object.

To avoid that, try_module_get() in __find_tracepoint_module_cb() again.

Scores

CVSS	Score	Vector	Source
3.1	7.8 High	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H	Linux

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
LinuxLinux	71c9cf87776eaa556fc0a0a060df94200e1f521c to before 868df4eb784c3ccc7e4340a9ea993cbbedca167eAffected 9db2b8cf4ea07b579db588e0353d5680f5d1f071 to before a27d2de2472b1cc7d582ab405d1d5832a80481deAffected ac91052f0ae5be9e46211ba92cc31c0e3b0a933a to before 626f01f4d26e8cf92e69c1df53036153c8e98a20Affected ac91052f0ae5be9e46211ba92cc31c0e3b0a933a to before dd941507a9486252d6fcf11814387666792020f3Affected 6.12.21 to before 6.12.24Affected 6.13.9 to before 6.13.12Affected
LinuxLinux	6.14Affected before 6.14Not affected 6.12.24 through 6.12.Not affected 6.13.12 through 6.13.Not affected 6.14.3 through 6.14.*Not affected 6.15 and laterNot affected

Product

Versions

LinuxLinux

71c9cf87776eaa556fc0a0a060df94200e1f521c to before 868df4eb784c3ccc7e4340a9ea993cbbedca167eAffected
9db2b8cf4ea07b579db588e0353d5680f5d1f071 to before a27d2de2472b1cc7d582ab405d1d5832a80481deAffected
ac91052f0ae5be9e46211ba92cc31c0e3b0a933a to before 626f01f4d26e8cf92e69c1df53036153c8e98a20Affected
ac91052f0ae5be9e46211ba92cc31c0e3b0a933a to before dd941507a9486252d6fcf11814387666792020f3Affected
6.12.21 to before 6.12.24Affected
6.13.9 to before 6.13.12Affected

LinuxLinux

6.14Affected
before 6.14Not affected
6.12.24 through 6.12.*Not affected
6.13.12 through 6.13.*Not affected
6.14.3 through 6.14.*Not affected
6.15 and laterNot affected

References

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