{"id":"CVE-2026-72066","revision":null,"records":[{"revision":"4b0e9fa02eba4c7cb610901737a215dc","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-72066","aliases":[],"title":"cpu: hotplug: Bound hotplug states sysfs output","description":"In the Linux kernel, the following vulnerability has been resolved:\n\ncpu: hotplug: Bound hotplug states sysfs output\n\nstates_show() adds CPU hotplug state names into a single sysfs buffer\nusing sprintf(). With enough registered states, this can write past the\nend of the PAGE_SIZE buffer.\n\nUse sysfs_emit_at() so output is bounded.","state":0,"publishedAt":"2026-08-15T05:52:19.527+00:00","modifiedAt":"2026-10-19T21:19:26.15+00:00","affected":[{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n \"product\": \"Linux\",\n \"vendor\": \"Linux\",\n \"defaultStatus\": \"unaffected\",\n \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n \"programFiles\": [\n \"kernel/cpu.c\"\n ],\n \"versions\": [\n {\n \"version\": \"98f8cdce1db580b99fce823a48eea2cb2bdb261e\",\n \"lessThan\": \"27481cf4365a6ff5c9be3590143e7ed434000266\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"98f8cdce1db580b99fce823a48eea2cb2bdb261e\",\n \"lessThan\": \"2408be459c70ef4250da1a9e50f5478e6b250d61\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"98f8cdce1db580b99fce823a48eea2cb2bdb261e\",\n \"lessThan\": \"de4d3d8ae17dc8b4cf8c59436c4b7e2dc2491635\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"98f8cdce1db580b99fce823a48eea2cb2bdb261e\",\n \"lessThan\": \"998f66e9ce320f3433f60b948e3698b744754a46\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"98f8cdce1db580b99fce823a48eea2cb2bdb261e\",\n \"lessThan\": \"61a73a123ac7a7fbc57382531f8cb7092d569aba\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"98f8cdce1db580b99fce823a48eea2cb2bdb261e\",\n \"lessThan\": \"6cb15b81ff545840048fb0e1a6e827d560dbf367\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"98f8cdce1db580b99fce823a48eea2cb2bdb261e\",\n \"lessThan\": \"631d53102da9f469c96b882b770336bec095b833\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"98f8cdce1db580b99fce823a48eea2cb2bdb261e\",\n \"lessThan\": \"86f436567f2516a0083b210bedc933544826a2c3\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n }\n ]\n }"},{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n \"product\": \"Linux\",\n \"vendor\": \"Linux\",\n \"defaultStatus\": \"affected\",\n \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n \"programFiles\": [\n \"kernel/cpu.c\"\n ],\n \"versions\": [\n {\n \"version\": \"4.6\",\n \"status\": \"affected\"\n },\n {\n \"version\": \"0\",\n \"lessThan\": \"4.6\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"5.10.265\",\n \"lessThanOrEqual\": \"5.10.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"5.15.212\",\n \"lessThanOrEqual\": \"5.15.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.1.178\",\n \"lessThanOrEqual\": \"6.1.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.6.145\",\n \"lessThanOrEqual\": \"6.6.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.12.97\",\n \"lessThanOrEqual\": \"6.12.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.18.40\",\n \"lessThanOrEqual\": \"6.18.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"7.1.5\",\n \"lessThanOrEqual\": \"7.1.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"7.2\",\n \"lessThanOrEqual\": \"*\",\n \"status\": \"unaffected\",\n \"versionType\": \"original_commit_for_fix\"\n }\n ]\n }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","score":7.8,"severity":"HIGH"}],"references":["https://git.kernel.org/stable/c/27481cf4365a6ff5c9be3590143e7ed434000266","https://git.kernel.org/stable/c/2408be459c70ef4250da1a9e50f5478e6b250d61","https://git.kernel.org/stable/c/de4d3d8ae17dc8b4cf8c59436c4b7e2dc2491635","https://git.kernel.org/stable/c/998f66e9ce320f3433f60b948e3698b744754a46","https://git.kernel.org/stable/c/61a73a123ac7a7fbc57382531f8cb7092d569aba","https://git.kernel.org/stable/c/6cb15b81ff545840048fb0e1a6e827d560dbf367","https://git.kernel.org/stable/c/631d53102da9f469c96b882b770336bec095b833","https://git.kernel.org/stable/c/86f436567f2516a0083b210bedc933544826a2c3"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-72066","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-72066","identifiers":["CVE-2026-72066"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. 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