CVE-2026-72177
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.
How to fix
- Linux Linux0710cc97962ca3bcabaa15ce7fead300faf726cd, a8c0592a80e954825f2ba29e7f32893f1df762f2, e03442b0c48bdb034f5b7cf9f3b76d8025576071, f18c561eb9c51f1ba3adb6117926a98a66599848, ee59df7a886a35113f309e3eb791060c46f79bb1, d58fdbe37a829fd2e5803dd4e5a72992dd8c5368 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Linux Linux | 7e84b1f8212a038ebeee06de56db7181148fa0cd ≤ v < 0710cc97962ca3bcabaa15ce7fead300faf726cd, 7e84b1f8212a038ebeee06de56db7181148fa0cd ≤ v < a8c0592a80e954825f2ba29e7f32893f1df762f2, 7e84b1f8212a038ebeee06de56db7181148fa0cd ≤ v < e03442b0c48bdb034f5b7cf9f3b76d8025576071, 7e84b1f8212a038ebeee06de56db7181148fa0cd ≤ v < f18c561eb9c51f1ba3adb6117926a98a66599848, 7e84b1f8212a038ebeee06de56db7181148fa0cd ≤ v < ee59df7a886a35113f309e3eb791060c46f79bb1, 7e84b1f8212a038ebeee06de56db7181148fa0cd ≤ v < d58fdbe37a829fd2e5803dd4e5a72992dd8c5368, 5.18 | 0710cc97962ca3bcabaa15ce7fead300faf726cd, a8c0592a80e954825f2ba29e7f32893f1df762f2, e03442b0c48bdb034f5b7cf9f3b76d8025576071, f18c561eb9c51f1ba3adb6117926a98a66599848, ee59df7a886a35113f309e3eb791060c46f79bb1, d58fdbe37a829fd2e5803dd4e5a72992dd8c5368 |
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