In the Linux kernel, the following vulnerability has been resolved:
thermal/debugfs: Prevent use-after-free from occurring after cdev removal
Since thermal_debug_cdev_remove() does not run under cdev->lock, it can
run in parallel with thermal_debug_cdev_state_update() and it may free
the struct thermal_debugfs object used by the latter after it has been
checked against NULL.
If that happens, thermal_debug_cdev_state_update() will access memory
that has been freed already causing the kernel to crash.
Address this by using cdev->lock in thermal_debug_cdev_remove() around
the cdev->debugfs value check (in case the same cdev is removed at the
same time in two different threads) and its reset to NULL.
Cc :6.8+ <stable@vger.kernel.org> # 6.8+
Metrics
Affected Vendors & Products
References
History
No history.
MITRE
Status: PUBLISHED
Assigner: Linux
Published: 2024-05-30T15:29:23.178Z
Updated: 2024-08-02T03:43:50.540Z
Reserved: 2024-05-30T15:25:07.071Z
Link: CVE-2024-36932
Vulnrichment
Updated: 2024-06-07T14:06:44.119Z
NVD
Status : Analyzed
Published: 2024-05-30T16:15:16.383
Modified: 2024-06-10T19:20:40.977
Link: CVE-2024-36932
Redhat