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.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Linux Linux
Default version status: unaffected
71c9cf87776eaa556fc0a0a060df94200e1f521c to < 868df4eb784c3ccc7e4340a9ea993cbbedca167eaffected9db2b8cf4ea07b579db588e0353d5680f5d1f071 to < a27d2de2472b1cc7d582ab405d1d5832a80481deaffectedac91052f0ae5be9e46211ba92cc31c0e3b0a933a to < 626f01f4d26e8cf92e69c1df53036153c8e98a20affectedac91052f0ae5be9e46211ba92cc31c0e3b0a933a to < dd941507a9486252d6fcf11814387666792020f3affected6.12.21 to < 6.12.24affected6.13.9 to < 6.13.12affected
Linux Linux
Default version status: affected
6.14affected0 to < 6.14unaffected6.12.24 to ≤ 6.12.*unaffected6.13.12 to ≤ 6.13.*unaffected6.14.3 to ≤ 6.14.*unaffected6.15 to ≤ *unaffected