CVE-2026-53143 (GCVE-0-2026-53143)
Vulnerability from cvelistv5
Published
2026-06-25 08:38
Modified
2026-08-20 12:32
Severity ?
7.0 (High) - CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Summary
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)
References
Impacted products
Vendor Product Version
Linux Linux Version: cc009e613de6560eb499f8bc92c80a737752cb30
Version: cc009e613de6560eb499f8bc92c80a737752cb30
Version: cc009e613de6560eb499f8bc92c80a737752cb30
Version: cc009e613de6560eb499f8bc92c80a737752cb30
Version: cc009e613de6560eb499f8bc92c80a737752cb30
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    "dateReserved": "2026-06-09T07:44:35.387Z",
    "dateUpdated": "2026-08-20T12:32:03.965Z",
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