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Review reviewHigh

CVE-2025-37845

Linux Linux, linux kernel

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.

CVSS
7.8
EPSS
0.26%
17.9% percentile
CISA KEV
Not listed
Published
2025.05.09
PRIORITY ASSESSMENT

Review review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV
Exploit probability0.26%
Technical severityCVSS 7.8

Vulnerability overview

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.

Affected product and versions

Product
Linux Linux, linux kernel
Affected versions
>= 71c9cf87776eaa556fc0a0a060df94200e1f521c < 868df4eb784c3ccc7e4340a9ea993cbbedca167e, >= 9db2b8cf4ea07b579db588e0353d5680f5d1f071 < a27d2de2472b1cc7d582ab405d1d5832a80481de, >= ac91052f0ae5be9e46211ba92cc31c0e3b0a933a < 626f01f4d26e8cf92e69c1df53036153c8e98a20, >= ac91052f0ae5be9e46211ba92cc31c0e3b0a933a < dd941507a9486252d6fcf11814387666792020f3, >= 6.12.21 < 6.12.24, >= 6.13.9 < 6.13.12, >= 6.14, >= 6.14.1 < 6.14.3, 6.14, 6.15
Fixed versions
6.12.24, 6.13.12, 6.14.3

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide
  1. 1
    Identify

    Confirm that Linux Linux, linux kernel and an affected version are present.

  2. 2
    Prioritize

    Combine exploitation signals with asset exposure and business criticality.

  3. 3
    Remediate

    Follow the vendor advisory or supported update path and preserve rollback options.

  4. 4
    Verify

    Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE
CWE-416
CVE-2025-37845 — Linux Linux, linux kernel | SECUFOCUS NOW