CVEvulnerability
CVE-2026-90273
- Status
- Received
- Published
- 2026-09-17
- Last modified
- 2026-10-21
- Assigner
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Description
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
- https://git.kernel.org/stable/c/0a47f0be6557b4a851addd430383a4dc7ee08752 git.kernel.org
- https://git.kernel.org/stable/c/26f9e89bad5a7e3005d3dc97a2e2fa6d6b2b8bb6 git.kernel.org
- https://git.kernel.org/stable/c/7e4f2702bbadbde887a5d8897297720a7f037ee5 git.kernel.org
- https://git.kernel.org/stable/c/ba63c62d4252f6bc58fd2a567075c72d03332562 git.kernel.org
- https://git.kernel.org/stable/c/d5f3dae82705d9388434892915008da3bb83c4ba git.kernel.org