CVE-2026-53374drm/amdgpu: zero-initialize GART table on allocation
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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In the Linux kernel, the following vulnerability has been resolved: drm/amdgpu: zero-initialize GART table on allocation GART TLB is flushed after unmapping but not after mapping. Since amdgpu_bo_create_kernel() does not zero-initialize the buffer, when a single PTE is written the TLB may speculatively load other uninitialized entries from the same cacheline. Those garbage entries can appear valid, and a subsequent write to another PTE in the same cacheline may cause the GPU to use a stale garbage PTE from the TLB. Fix this by calling memset_io() to zero-initialize the GART table with gart_pte_flags immediately after allocation. Using AMDGPU_GEM_CREATE_VRAM_CLEARED, SDMA-based clear will not work since SDMA needs GART to be initialized to work. (cherry picked from commit d9af8263b82b6eaa60c5718e0c6631c5037e4b24)
- CVSS
- 8.8 HIGH (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Analyzed
- Record last updated
- Oct 16, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | from d38ceaf99ed015f2a0b9af3499791bd3a3daae21 before 40df11255d71b02e20e70579f1b12b687e396e26; from d38ceaf99ed015f2a0b9af3499791bd3a3daae21 before 91fbb5e635c8fb1b49e15c19da06480089ef719f; from d38ceaf99ed015f2a0b9af3499791bd3a3daae21 before 8ae8b9e74bab94aab1d79f1688129bcc61c8b29a; from d38ceaf99ed015f2a0b9af3499791bd3a3daae21 before b17175d0a375b3ed5e81597dac4983fdb46e478d; from d38ceaf99ed015f2a0b9af3499791bd3a3daae21 before 791941be5da125d9a1b228582bfdc300c05d05b3; from d38ceaf99ed015f2a0b9af3499791bd3a3daae21 before e6c2e6c2e1fa066968a16aca1cb66cd1bdde7741 | CNA record |
linux linux_kernel linux:linux_kernel | from 4.2 before 6.1.175; from 6.2 before 6.6.140; from 6.7 before 6.12.90; from 6.13 before 6.18.32; from 6.19 before 7.0.9; 7.1; 7.1 | NVD |
References
- https://git.kernel.org/stable/c/40df11255d71b02e20e70579f1b12b687e396e26patch
- https://git.kernel.org/stable/c/91fbb5e635c8fb1b49e15c19da06480089ef719fpatch
- https://git.kernel.org/stable/c/8ae8b9e74bab94aab1d79f1688129bcc61c8b29apatch
- https://git.kernel.org/stable/c/b17175d0a375b3ed5e81597dac4983fdb46e478dpatch
- https://git.kernel.org/stable/c/791941be5da125d9a1b228582bfdc300c05d05b3patch
- https://git.kernel.org/stable/c/e6c2e6c2e1fa066968a16aca1cb66cd1bdde7741patch
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.