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.

Classification

CVE ID: CVE-2025-37845

Affected Products

Vendor: Linux

Product: Linux

Exploit Prediction Scoring System (EPSS)

EPSS Score: 0.02% (probability of being exploited)

EPSS Percentile: 4.6% (scored less or equal to compared to others)

EPSS Date: 2025-06-07 (when was this score calculated)

References

https://nvd.nist.gov/vuln/detail/CVE-2025-37845
https://git.kernel.org/stable/c/868df4eb784c3ccc7e4340a9ea993cbbedca167e
https://git.kernel.org/stable/c/a27d2de2472b1cc7d582ab405d1d5832a80481de
https://git.kernel.org/stable/c/626f01f4d26e8cf92e69c1df53036153c8e98a20
https://git.kernel.org/stable/c/dd941507a9486252d6fcf11814387666792020f3

Timeline