CVE-2026-46067
In the Linux kernel, the following vulnerability has been resolved: mm/damon/core: validate damos_quota_goal->nid for node_memcg_{used,free}_bp Users can set damos_quota_goal->nid with arbitrary value for node_memcg_{used,free}_bp. But DAMON core is using those for NODE-DATA() without a validation of the value. This can result in out of bounds memory access. The issue can actually triggered using DAMON user-space tool (damo), like below. $ sudo mkdir /sys/fs/cgroup/foo $ sudo ./damo start --damos_action stat --damos_quota_interval 1s \ --damos_quota_goal node_memcg_used_bp 50% -1 /foo $ sudo dmseg [...] [ 524.181426] Unable to handle kernel paging request at virtual address 0000000000002c00 Fix this issue by adding the validation of the given node id. If an invalid node id is given, it returns 0% for used memory ratio, and 100% for free memory ratio.
Affected versions
Linux kernel versions
6.19
and later are affected. Fixed in
7.0.4,
7.1-rc1
and their respective stable series.
References
The following references provide additional information about CVE-2026-46067 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.
-
PatchKernel patch commithttps://git.kernel.org/stable/c/a34dac6482e53e2c76944f25b1489b9b7da3a6e6
-
PatchKernel patch commithttps://git.kernel.org/stable/c/da10db73ada26345244ea5dc52f974692bd05f66
Frequently asked questions
-
What is CVE-2026-46067?
CVE-2026-46067 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 6.19 onward and has been patched in 7.0.4 and 7.1-rc1. CVE-2026-46067 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
-
Is there a patch available for CVE-2026-46067?
Yes — CVE-2026-46067 has been patched. Fixed versions include 7.0.4 and 7.1-rc1. If you are running Linux kernel 6.19 or later up to the fix versions, apply the relevant patch for your kernel branch.
-
Is CVE-2026-46067 actively exploited?
No — CVE-2026-46067 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.