{"id":"CVE-2026-46067","state":"PUBLISHED","title":"mm/damon/core: validate damos_quota_goal->nid for node_memcg_{used,free}_bp","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nmm/damon/core: validate damos_quota_goal->nid for node_memcg_{used,free}_bp\n\nUsers can set damos_quota_goal->nid with arbitrary value for\nnode_memcg_{used,free}_bp.  But DAMON core is using those for NODE-DATA()\nwithout a validation of the value.  This can result in out of bounds\nmemory access.  The issue can actually triggered using DAMON user-space\ntool (damo), like below.\n\n    $ sudo mkdir /sys/fs/cgroup/foo\n    $ sudo ./damo start --damos_action stat --damos_quota_interval 1s \\\n            --damos_quota_goal node_memcg_used_bp 50% -1 /foo\n    $ sudo dmseg\n    [...]\n    [  524.181426] Unable to handle kernel paging request at virtual address 0000000000002c00\n\nFix this issue by adding the validation of the given node id.  If an\ninvalid node id is given, it returns 0% for used memory ratio, and 100%\nfor free memory ratio.","publishedAt":"2026-05-27T12:57:45.648Z","updatedAt":"2026-06-14T17:51:55.381Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"b74a120bcf50787e5b9a2c3dcff999f9836ce1db","status":"affected","lessThan":"da10db73ada26345244ea5dc52f974692bd05f66","versionType":"git"},{"version":"b74a120bcf50787e5b9a2c3dcff999f9836ce1db","status":"affected","lessThan":"a34dac6482e53e2c76944f25b1489b9b7da3a6e6","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["mm/damon/core.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.19","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.19","versionType":"semver"},{"version":"7.0.4","status":"unaffected","lessThanOrEqual":"7.0.*","versionType":"semver"},{"version":"7.1","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["mm/damon/core.c"]}],"references":["https://git.kernel.org/stable/c/da10db73ada26345244ea5dc52f974692bd05f66","https://git.kernel.org/stable/c/a34dac6482e53e2c76944f25b1489b9b7da3a6e6"],"weaknesses":[],"ingestedAt":"2026-10-29T20:12:07.131Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/46xxx/CVE-2026-46067.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-46067","state":"PUBLISHED","datePublished":"2026-05-27T12:57:45.648Z","dateUpdated":"2026-06-14T17:51:55.381Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-05-13T15:03:33.095Z"},"containers":{"cna":{"title":"mm/damon/core: validate damos_quota_goal->nid for node_memcg_{used,free}_bp","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nmm/damon/core: validate damos_quota_goal->nid for node_memcg_{used,free}_bp\n\nUsers can set damos_quota_goal->nid with arbitrary value for\nnode_memcg_{used,free}_bp.  But DAMON core is using those for NODE-DATA()\nwithout a validation of the value.  This can result in out of bounds\nmemory access.  The issue can actually triggered using DAMON user-space\ntool (damo), like below.\n\n    $ sudo mkdir /sys/fs/cgroup/foo\n    $ sudo ./damo start --damos_action stat --damos_quota_interval 1s \\\n            --damos_quota_goal node_memcg_used_bp 50% -1 /foo\n    $ sudo dmseg\n    [...]\n    [  524.181426] Unable to handle kernel paging request at virtual address 0000000000002c00\n\nFix this issue by adding the validation of the given node id.  If an\ninvalid node id is given, it returns 0% for used memory ratio, and 100%\nfor free memory ratio."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"b74a120bcf50787e5b9a2c3dcff999f9836ce1db","status":"affected","lessThan":"da10db73ada26345244ea5dc52f974692bd05f66","versionType":"git"},{"version":"b74a120bcf50787e5b9a2c3dcff999f9836ce1db","status":"affected","lessThan":"a34dac6482e53e2c76944f25b1489b9b7da3a6e6","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["mm/damon/core.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.19","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.19","versionType":"semver"},{"version":"7.0.4","status":"unaffected","lessThanOrEqual":"7.0.*","versionType":"semver"},{"version":"7.1","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["mm/damon/core.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/da10db73ada26345244ea5dc52f974692bd05f66"},{"url":"https://git.kernel.org/stable/c/a34dac6482e53e2c76944f25b1489b9b7da3a6e6"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-06-14T17:51:55.381Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.19","versionEndExcluding":"7.0.4"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.19","versionEndExcluding":"7.1"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}