{"cve":"CVE-2026-53374","nvd":{"published":"2026-07-19T11:16:38.500","modified":"2026-10-19T20:19:16.930","status":"Modified","description":"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)","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H","score":8.8},"cwes":["CWE-457"],"references":["https://git.kernel.org/stable/c/40df11255d71b02e20e70579f1b12b687e396e26","https://git.kernel.org/stable/c/791941be5da125d9a1b228582bfdc300c05d05b3","https://git.kernel.org/stable/c/8ae8b9e74bab94aab1d79f1688129bcc61c8b29a","https://git.kernel.org/stable/c/91fbb5e635c8fb1b49e15c19da06480089ef719f","https://git.kernel.org/stable/c/b17175d0a375b3ed5e81597dac4983fdb46e478d"],"products":["linux:linux_kernel"],"source":"nvd","synced_at":"2026-10-21T03:43:09.190223697+00:00"},"epss":{"cve":"CVE-2026-53374","score":0.00127,"percentile":0.02386,"date":"2026-10-25"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}