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CVE-2026-53143

CVSS 7.8 · YüksekNVD: Modified

Açıklama (NVD)

In the Linux kernel, the following vulnerability has been resolved: drm/amdkfd: Fix buffer overflow in SDMA queue checkpoint/restore on GFX11 The v11 MQD manager incorrectly assigned the CP-compute variants of checkpoint_mqd/restore_mqd for KFD_MQD_TYPE_SDMA queues. These functions use sizeof(struct v11_compute_mqd) (2048 bytes) instead of sizeof(struct v11_sdma_mqd) (512 bytes), causing a 1536-byte overflow. During CRIU checkpoint of an SDMA queue on Navi3x: - checkpoint_mqd() reads 2048 bytes from a 512-byte SDMA MQD buffer, leaking 1536 bytes of adjacent GTT memory to userspace During CRIU restore: - restore_mqd() writes 2048 bytes into a 512-byte SDMA MQD buffer, corrupting 1536 bytes of adjacent GTT memory (often the ring buffer or neighboring MQDs) This is a copy-paste regression unique to v11. All other ASIC backends (cik, vi, v9, v10, v12) correctly use the SDMA-specific variants. Add checkpoint_mqd_sdma() and restore_mqd_sdma() functions that properly handle the smaller v11_sdma_mqd structure, matching the pattern used in other MQD managers. (cherry picked from commit 6fa41db7ffdec97d62433adf03b7b9b759af8c2c)

Yayın: 25.06.2026 · Son değişiklik: 06.11.2026 · Zayıflık: CWE-787, CWE-131

CVSS 3.1 metrikleri

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Saldırı vektörüYerel
KarmaşıklıkDüşük
Gereken yetkiDüşük
Kullanıcı etkileşimiGerekmez
KapsamDeğişmez
GizlilikYüksek
BütünlükYüksek
ErişilebilirlikYüksek

Hesaplanan temel puan: 7.8. CVSS hesaplayıcıda incele

Referanslar

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