Description
In the Linux kernel, the following vulnerability has been resolved: mm/damon/sysfs-schemes: fix dir put orders in access_pattern_add_dirs() Patch series "mm/damon/sysfs-schemes: fix wrong directories put orders in error paths". Error paths of damon_sysfs_access_pattern_add_dirs() and damon_sysfs_scheme_add_dirs() functions put references to directories in wrong orders. As a result, uninitialized memory dereference and/or memory leak can happen. Fix those. This patch (of 2): In access_pattern_add_dirs(), error handling path puts references starting from setup failed directories. If the failure happpened from the initial allication in the setup functions, uninitialized memory dereference happen. The allocation failures will not commonly happen, but the consequence is quite bad. Fix the wrong reference put orders. The issue was discovered [1] by Sashiko.
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
7e84b1f8212a038ebeee06de56db7181148fa0cd to < 0710cc97962ca3bcabaa15ce7fead300faf726cdaffected7e84b1f8212a038ebeee06de56db7181148fa0cd to < a8c0592a80e954825f2ba29e7f32893f1df762f2affected7e84b1f8212a038ebeee06de56db7181148fa0cd to < e03442b0c48bdb034f5b7cf9f3b76d8025576071affected7e84b1f8212a038ebeee06de56db7181148fa0cd to < f18c561eb9c51f1ba3adb6117926a98a66599848affected7e84b1f8212a038ebeee06de56db7181148fa0cd to < ee59df7a886a35113f309e3eb791060c46f79bb1affected7e84b1f8212a038ebeee06de56db7181148fa0cd to < d58fdbe37a829fd2e5803dd4e5a72992dd8c5368affected
Linux Linux
Default version status: affected
5.18affected0 to < 5.18unaffected6.1.178 to ≤ 6.1.*unaffected6.6.145 to ≤ 6.6.*unaffected6.12.97 to ≤ 6.12.*unaffected6.18.40 to ≤ 6.18.*unaffected7.1.5 to ≤ 7.1.*unaffected7.2 to ≤ *unaffected
References
- https://git.kernel.org/stable/c/0710cc97962ca3bcabaa15ce7fead300faf726cd ↗
- https://git.kernel.org/stable/c/a8c0592a80e954825f2ba29e7f32893f1df762f2 ↗
- https://git.kernel.org/stable/c/e03442b0c48bdb034f5b7cf9f3b76d8025576071 ↗
- https://git.kernel.org/stable/c/f18c561eb9c51f1ba3adb6117926a98a66599848 ↗
- https://git.kernel.org/stable/c/ee59df7a886a35113f309e3eb791060c46f79bb1 ↗
- https://git.kernel.org/stable/c/d58fdbe37a829fd2e5803dd4e5a72992dd8c5368 ↗