Medium 5.5Published Apr 24, 2026

CVE-2026-31653mm/damon/sysfs: dealloc repeat_call_control if damon_call() fails

Updated under an hour ago (Oct 28, 2026, 1:20 AM ET)

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Exploited in the last 30 days

In the Linux kernel, the following vulnerability has been resolved: mm/damon/sysfs: dealloc repeat_call_control if damon_call() fails damon_call() for repeat_call_control of DAMON_SYSFS could fail if somehow the kdamond is stopped before the damon_call(). It could happen, for example, when te damon context was made for monitroing of a virtual address processes, and the process is terminated immediately, before the damon_call() invocation. In the case, the dyanmically allocated repeat_call_control is not deallocated and leaked. Fix the leak by deallocating the repeat_call_control under the damon_call() failure. This issue is discovered by sashiko [1].

CVSS: 5.5 MEDIUM (v3.1, NVD)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Weakness (CWE): Not given
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Linux
NVD analysis: Analyzed
Record last updated: May 11, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	from 04a06b139ec08aa63d7377f6d3e5218f8ddb1c5d before b9dadf026a9fb681ed32a0646adc10ab485bf3b1; from 04a06b139ec08aa63d7377f6d3e5218f8ddb1c5d before 0655f5cf1735508394ef8af98ddcfab3ac1c1cc5; from 04a06b139ec08aa63d7377f6d3e5218f8ddb1c5d before 0199390a6b92fc21860e1b858abf525c7e73b956	CNA record
linux linux_kernel linux:linux_kernel	from 6.17.1 before 6.18.23; from 6.19 before 6.19.13; 6.17; 7.0; 7.0; 7.0; 7.0; 7.0; and 2 more ranges	NVD

References

References

https://git.kernel.org/stable/c/b9dadf026a9fb681ed32a0646adc10ab485bf3b1	patch
https://git.kernel.org/stable/c/0655f5cf1735508394ef8af98ddcfab3ac1c1cc5	patch
https://git.kernel.org/stable/c/0199390a6b92fc21860e1b858abf525c7e73b956	patch

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.