{"id":"CVE-2026-53374","summary":"drm/amdgpu: zero-initialize GART table on allocation","details":"In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amdgpu: zero-initialize GART table on allocation\n\nGART TLB is flushed after unmapping but not after mapping. Since\namdgpu_bo_create_kernel() does not zero-initialize the buffer, when a\nsingle PTE is written the TLB may speculatively load other uninitialized\nentries from the same cacheline. Those garbage entries can appear valid,\nand a subsequent write to another PTE in the same cacheline may cause the\nGPU to use a stale garbage PTE from the TLB.\n\nFix this by calling memset_io() to zero-initialize the GART table with\ngart_pte_flags immediately after allocation.\n\nUsing AMDGPU_GEM_CREATE_VRAM_CLEARED, SDMA-based clear will not work\nsince SDMA needs GART to be initialized to work.\n\n(cherry picked from commit d9af8263b82b6eaa60c5718e0c6631c5037e4b24)","modified":"2026-07-22T03:31:54.682818202Z","published":"2026-07-19T10:01:58.292Z","database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/53xxx/CVE-2026-53374.json","cna_assigner":"Linux"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/40df11255d71b02e20e70579f1b12b687e396e26"},{"type":"WEB","url":"https://git.kernel.org/stable/c/791941be5da125d9a1b228582bfdc300c05d05b3"},{"type":"WEB","url":"https://git.kernel.org/stable/c/8ae8b9e74bab94aab1d79f1688129bcc61c8b29a"},{"type":"WEB","url":"https://git.kernel.org/stable/c/91fbb5e635c8fb1b49e15c19da06480089ef719f"},{"type":"WEB","url":"https://git.kernel.org/stable/c/b17175d0a375b3ed5e81597dac4983fdb46e478d"},{"type":"WEB","url":"https://git.kernel.org/stable/c/e6c2e6c2e1fa066968a16aca1cb66cd1bdde7741"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/53xxx/CVE-2026-53374.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-53374"},{"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":"d38ceaf99ed015f2a0b9af3499791bd3a3daae21"},{"fixed":"40df11255d71b02e20e70579f1b12b687e396e26"},{"fixed":"91fbb5e635c8fb1b49e15c19da06480089ef719f"},{"fixed":"8ae8b9e74bab94aab1d79f1688129bcc61c8b29a"},{"fixed":"b17175d0a375b3ed5e81597dac4983fdb46e478d"},{"fixed":"791941be5da125d9a1b228582bfdc300c05d05b3"},{"fixed":"e6c2e6c2e1fa066968a16aca1cb66cd1bdde7741"}]}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-53374.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"4.2.0"},{"fixed":"6.1.175"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.2.0"},{"fixed":"6.6.140"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.7.0"},{"fixed":"6.12.90"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.13.0"},{"fixed":"6.18.32"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"7.0.9"}]}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-53374.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H"}]}