摘要:
In the Linux kernel, the following vulnerability has been resolved:thermal/debugfs: Prevent use-after-free from occurring after cdev removalSince thermal_debug_cdev_remove() does not run under cdev->lock, it canrun in parallel with thermal_debug_cdev_state_update() and it may freethe struct thermal_debugfs object used by the latter after it has beenchecked against NULL.If that happens, thermal_debug_cdev_state_update() will access memorythat has been freed already causing the kernel to crash.Address this by using cdev->lock in thermal_debug_cdev_remove() aroundthe cdev->debugfs value check (in case the same cdev is removed at thesame time in two different threads) and its reset to NULL.Cc :6.8+ <stable@vger.kernel.org> # 6.8+
安全等级: Low
公告ID: KylinSec-SA-2024-3091
发布日期: 2024年7月10日
关联CVE: CVE-2024-36932
In the Linux kernel, the following vulnerability has been resolved:thermal/debugfs: Prevent use-after-free from occurring after cdev removalSince thermal_debug_cdev_remove() does not run under cdev->lock, it canrun in parallel with thermal_debug_cdev_state_update() and it may freethe struct thermal_debugfs object used by the latter after it has beenchecked against NULL.If that happens, thermal_debug_cdev_state_update() will access memorythat has been freed already causing the kernel to crash.Address this by using cdev->lock in thermal_debug_cdev_remove() aroundthe cdev->debugfs value check (in case the same cdev is removed at thesame time in two different threads) and its reset to NULL.Cc :6.8+ <stable@vger.kernel.org> # 6.8+
| cve名称 | 产品 | 组件 | 是否受影响 |
|---|---|---|---|
| CVE-2024-36932 | KY3.4-5A | kernel | Unaffected |
| CVE-2024-36932 | KY3.5.2 | kernel | Unaffected |
| CVE-2024-36932 | V6 | kernel | Unaffected |
