{"id":"CVE-2026-53143","title":"drm/amdkfd: Fix buffer overflow in SDMA queue checkpoint/restore on GFX11","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amdkfd: Fix buffer overflow in SDMA queue checkpoint/restore on GFX11\n\nThe v11 MQD manager incorrectly assigned the CP-compute variants of\ncheckpoint_mqd/restore_mq…","severity":"high","cvss":7,"cvssVector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H","cvssSource":"adp","vendor":"Linux","product":"Linux","affected":["Linux >= cc009e613de6560eb499f8bc92c80a737752cb30 < 16dad1fb0d783a4008de30e32d0038c393de05b1","Linux >= cc009e613de6560eb499f8bc92c80a737752cb30 < 2c5b66c9b4057b385566940935ebc32f6e6ebfd2","Linux >= cc009e613de6560eb499f8bc92c80a737752cb30 < d3efcadfe3eea5b4263b8f2d4463b15c9fc46a64","Linux >= cc009e613de6560eb499f8bc92c80a737752cb30 < d02f05d30f35b036f7cbaf72de634affb5b38ec6","Linux >= cc009e613de6560eb499f8bc92c80a737752cb30 < 352ea59028ea48a6fff77f19ae28f98f71946a80","Linux 5.19"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-11-06T16:20:46.066510Z"},"published":"2026-06-25","updated":"2026-11-06","sourceUpdated":"2026-11-06T16:24:04.529Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-53143","references":[{"url":"https://git.kernel.org/stable/c/16dad1fb0d783a4008de30e32d0038c393de05b1"},{"url":"https://git.kernel.org/stable/c/2c5b66c9b4057b385566940935ebc32f6e6ebfd2"},{"url":"https://git.kernel.org/stable/c/d3efcadfe3eea5b4263b8f2d4463b15c9fc46a64"},{"url":"https://git.kernel.org/stable/c/d02f05d30f35b036f7cbaf72de634affb5b38ec6"},{"url":"https://git.kernel.org/stable/c/352ea59028ea48a6fff77f19ae28f98f71946a80"}],"tags":["cve.org"],"epss":0.00153,"epssPercentile":0.0446,"ingestedAt":"2026-11-06T16:57:43.279Z","slug":"CVE-2026-53143","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amdkfd: Fix buffer overflow in SDMA queue checkpoint/restore on GFX11\n\nThe v11 MQD manager incorrectly assigned the CP-compute variants of\ncheckpoint_mqd/restore_mqd for KFD_MQD_TYPE_SDMA queues. These functions\nuse sizeof(struct v11_compute_mqd) (2048 bytes) instead of sizeof(struct\nv11_sdma_mqd) (512 bytes), causing a 1536-byte overflow.\n\nDuring CRIU checkpoint of an SDMA queue on Navi3x:\n- checkpoint_mqd() reads 2048 bytes from a 512-byte SDMA MQD buffer,\n  leaking 1536 bytes of adjacent GTT memory to userspace\n\nDuring CRIU restore:\n- restore_mqd() writes 2048 bytes into a 512-byte SDMA MQD buffer,\n  corrupting 1536 bytes of adjacent GTT memory (often the ring buffer\n  or neighboring MQDs)\n\nThis is a copy-paste regression unique to v11. All other ASIC backends\n(cik, vi, v9, v10, v12) correctly use the SDMA-specific variants.\n\nAdd checkpoint_mqd_sdma() and restore_mqd_sdma() functions that properly\nhandle the smaller v11_sdma_mqd structure, matching the pattern used in\nother MQD managers.\n\n(cherry picked from commit 6fa41db7ffdec97d62433adf03b7b9b759af8c2c)\n\n## Affected\n\n- `Linux >= cc009e613de6560eb499f8bc92c80a737752cb30 < 16dad1fb0d783a4008de30e32d0038c393de05b1`\n- `Linux >= cc009e613de6560eb499f8bc92c80a737752cb30 < 2c5b66c9b4057b385566940935ebc32f6e6ebfd2`\n- `Linux >= cc009e613de6560eb499f8bc92c80a737752cb30 < d3efcadfe3eea5b4263b8f2d4463b15c9fc46a64`\n- `Linux >= cc009e613de6560eb499f8bc92c80a737752cb30 < d02f05d30f35b036f7cbaf72de634affb5b38ec6`\n- `Linux >= cc009e613de6560eb499f8bc92c80a737752cb30 < 352ea59028ea48a6fff77f19ae28f98f71946a80`\n- `Linux 5.19`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":39,"depthScoreParts":{"impact":38.5,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}