Description (CNA)
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 (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 71c9cf87776eaa556fc0a0a060df94200e1f521c before 868df4eb784c3ccc7e4340a9ea993cbbedca167e; affected 9db2b8cf4ea07b579db588e0353d5680f5d1f071 before a27d2de2472b1cc7d582ab405d1d5832a80481de; affected ac91052f0ae5be9e46211ba92cc31c0e3b0a933a before 626f01f4d26e8cf92e69c1df53036153c8e98a20; affected ac91052f0ae5be9e46211ba92cc31c0e3b0a933a before dd941507a9486252d6fcf11814387666792020f3; affected 6.12.21 before 6.12.24; affected 6.13.9 before 6.13.12 |
| Linux / Linux | affected 6.14; unaffected 0 before 6.14; unaffected 6.12.24 through 6.12.*; unaffected 6.13.12 through 6.13.*; unaffected 6.14.3 through 6.14.*; unaffected 6.15 through * |
CWE
No CWE identifiers supplied.