{"id":"CVE-2026-74450","summary":"drm/amd/pm: fix pptable use-after-free","details":"In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amd/pm: fix pptable use-after-free\n\namdgpu_dpm_get_pp_table() returns a pointer to a driver-owned power table\nafter dropping adev-\u003epm.mutex. The sysfs path then copies from that pointer.\nA concurrent pp_table write can replace and free the allocation during the\ncopy, causing a use-after-free.\n\nChange the DPM interface to copy into caller-provided storage while the mutex\nis held. Keep the size-only query for attribute discovery without exposing\nthe driver-owned pointer.\n\n(cherry picked from commit f6eed7acfd30099ef7baeb6ba45bb59daad80631)","modified":"2026-08-25T03:51:55.009151489Z","published":"2026-08-15T12:26:55.127Z","database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/74xxx/CVE-2026-74450.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/3fbb3ac75000e3187f500a91a4099b24206866a1"},{"type":"WEB","url":"https://git.kernel.org/stable/c/81b5af1fb0f14cace6c3b3130a05e5602a597820"},{"type":"WEB","url":"https://git.kernel.org/stable/c/8c685df5c3b261c42505110965b42f9a754eb9b7"},{"type":"WEB","url":"https://git.kernel.org/stable/c/9efc767335234cf7a892e46d45cd453b711421e7"},{"type":"WEB","url":"https://git.kernel.org/stable/c/b628f2c6feb3a115ea72d3120a2bd94afc5163df"},{"type":"WEB","url":"https://git.kernel.org/stable/c/bb493058c35c8676e48269ab6732688ea733d23c"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/74xxx/CVE-2026-74450.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-74450"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"1684d3ba488529266ce6f97b88076bd185f4790e"},{"fixed":"3fbb3ac75000e3187f500a91a4099b24206866a1"},{"fixed":"9efc767335234cf7a892e46d45cd453b711421e7"},{"fixed":"81b5af1fb0f14cace6c3b3130a05e5602a597820"},{"fixed":"8c685df5c3b261c42505110965b42f9a754eb9b7"},{"fixed":"b628f2c6feb3a115ea72d3120a2bd94afc5163df"},{"fixed":"bb493058c35c8676e48269ab6732688ea733d23c"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-74450.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"4.9.0"},{"fixed":"6.1.184"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.2.0"},{"fixed":"6.6.153"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.7.0"},{"fixed":"6.12.105"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.13.0"},{"fixed":"6.18.46"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"7.1.8"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-74450.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"}]}