In the Linux kernel, the following vulnerability has been resolved:
coresight: etm4x: missing cscfg_csdev_disable_active_config() in perf enable
In the perf enable path, there are missing cases where
cscfg_csdev_disable_active_config() is not called:
- Branch broadcast is selected but not supported by the hardware
- etm4_enable_hw() fails
This can lead to a leak of config_desc->active_cnt.
Fix this by properly calling cscfg_csdev_disable_active_config()
in these error paths.
References 3
https://git.kernel.org/stable/c/0a47f0be6557b4a851addd430383a4dc7ee08752
416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/7e4f2702bbadbde887a5d8897297720a7f037ee5
416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/d5f3dae82705d9388434892915008da3bb83c4ba
416baaa9-dc9f-4396-8d5f-8c081fb06d67