Description (CNA)
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 (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 7e84b1f8212a038ebeee06de56db7181148fa0cd before 0710cc97962ca3bcabaa15ce7fead300faf726cd; affected 7e84b1f8212a038ebeee06de56db7181148fa0cd before a8c0592a80e954825f2ba29e7f32893f1df762f2; affected 7e84b1f8212a038ebeee06de56db7181148fa0cd before e03442b0c48bdb034f5b7cf9f3b76d8025576071; affected 7e84b1f8212a038ebeee06de56db7181148fa0cd before f18c561eb9c51f1ba3adb6117926a98a66599848; affected 7e84b1f8212a038ebeee06de56db7181148fa0cd before ee59df7a886a35113f309e3eb791060c46f79bb1; affected 7e84b1f8212a038ebeee06de56db7181148fa0cd before d58fdbe37a829fd2e5803dd4e5a72992dd8c5368 |
| Linux / Linux | affected 5.18; unaffected 0 before 5.18; unaffected 6.1.178 through 6.1.*; unaffected 6.6.145 through 6.6.*; unaffected 6.12.97 through 6.12.*; unaffected 6.18.40 through 6.18.*; unaffected 7.1.5 through 7.1.*; unaffected 7.2 through * |
CWE
No CWE identifiers supplied.
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