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CVE-2026-64184: Linux Kernel: Memory Leak in Damon Sysfs Schemes
CVE-2026-64184
CVE-2026-64184
Summary
A bug in the Linux kernel's memory management system could cause a memory leak when using the Damon sysfs interface. This could lead to performance issues and potential crashes. To fix this issue, kernel developers have released a patch to ensure proper cleanup of memory group references.
What to do
No fix is available yet. Check with your software vendor for updates.
Affected software
| Vendor | Product | Affected versions |
|---|---|---|
| linux | linux |
< 082351f9d40007414ad6af062b3a26fa02fd4b5f 6.3 |
Original title
In the Linux kernel, the following vulnerability has been resolved:
mm/damon/sysfs-schemes: call missing mem_cgroup_iter_break()
damon_sysfs_memcg_path_to_id() breaks mem_cgroup_iter() loop witho...
Original description
In the Linux kernel, the following vulnerability has been resolved:
mm/damon/sysfs-schemes: call missing mem_cgroup_iter_break()
damon_sysfs_memcg_path_to_id() breaks mem_cgroup_iter() loop without
calling mem_cgroup_iter_break(). This leaks the cgroup reference. Fix
the issue by calling mem_cgroup_iter_break() before the break.
The issue was discovered [1] by Sashiko.
mm/damon/sysfs-schemes: call missing mem_cgroup_iter_break()
damon_sysfs_memcg_path_to_id() breaks mem_cgroup_iter() loop without
calling mem_cgroup_iter_break(). This leaks the cgroup reference. Fix
the issue by calling mem_cgroup_iter_break() before the break.
The issue was discovered [1] by Sashiko.
- https://git.kernel.org/stable/c/082351f9d40007414ad6af062b3a26fa02fd4b5f
- https://git.kernel.org/stable/c/30a361be33f3793b9ecbd10ab7be6d0564819b79
- https://git.kernel.org/stable/c/302e02f9ba49f81418ec2a749ae6f5cac1d424e9
- https://git.kernel.org/stable/c/1bd31386ec3b9ccec10c04429948a306ec5897c0
- https://git.kernel.org/stable/c/d4e7b5c4cc353f154d5ab8bb2e1ce7714d77a6e9
Published: 19 Jul 2026 · Updated: 19 Jul 2026 · First seen: 19 Jul 2026