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.
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Amazon_linux_2023 | — | Upgrade kernelUpgrade kernel-tools-debuginfoUpgrade kernel-tools-develUpgrade perfUpgrade kernel-livepatch-6.1.180-225.360Upgrade kernel-modules-extraUpgrade python3-perfUpgrade kernel-headersUpgrade python3-perf-debuginfoUpgrade kernel-debuginfo-common-aarch64Upgrade bpftoolUpgrade kernel-debuginfoUpgrade kernel-develUpgrade kernel-toolsUpgrade kernel-debuginfo-common-x86_64Upgrade perf-debuginfoUpgrade bpftool-debuginfoUpgrade kernel-modules-extra-common | Sep 1, 2026 | Aug 15, 2026 |
| Debian | — | Upgrade linux | Aug 16, 2026 | Aug 16, 2026 |
| Redhat_linux | — | No solution exists | Aug 20, 2026 | Aug 15, 2026 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Aug 25, 2026 | Aug 15, 2026 |
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