What’s Vulnerable › Vulnerabilities

CVE-2026-64184: mm/damon/sysfs-schemes: call missing mem_cgroup_iter_break()

• Severity: medium (CVSS 5.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.1% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-07-19 · updated 2026-08-11

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.

Affected products

• Linux kernel: from 6.3 before 6.6.142; from 6.7 before 6.12.92; from 6.13 before 6.18.34; from 6.19 before 7.0.11; 7.1-rc1, 7.1-rc2, 7.1-rc3, 7.1-rc4 — fixed in 6.12.92, 6.18.34, 6.6.142, 7.0.11

How to fix

Upgrade to a fixed version: Linux kernel 6.12.92, 6.18.34, 6.6.142, 7.0.11. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/082351f9d40007414ad6af062b3a26fa02fd4b5f
• https://git.kernel.org/stable/c/1bd31386ec3b9ccec10c04429948a306ec5897c0
• https://git.kernel.org/stable/c/302e02f9ba49f81418ec2a749ae6f5cac1d424e9
• https://git.kernel.org/stable/c/30a361be33f3793b9ecbd10ab7be6d0564819b79
• https://git.kernel.org/stable/c/d4e7b5c4cc353f154d5ab8bb2e1ce7714d77a6e9

Get alerted when CVE-2026-64184 or the next vulnerability affects your stack