{"cve":"CVE-2026-53143","nvd":{"published":"2026-06-25T09:16:31.607","modified":"2026-08-20T13:19:00.560","status":"Modified","description":"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_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)","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","score":7.8},"cwes":["CWE-787","CWE-131"],"references":["https://git.kernel.org/stable/c/16dad1fb0d783a4008de30e32d0038c393de05b1","https://git.kernel.org/stable/c/2c5b66c9b4057b385566940935ebc32f6e6ebfd2","https://git.kernel.org/stable/c/352ea59028ea48a6fff77f19ae28f98f71946a80","https://git.kernel.org/stable/c/d02f05d30f35b036f7cbaf72de634affb5b38ec6","https://git.kernel.org/stable/c/d3efcadfe3eea5b4263b8f2d4463b15c9fc46a64"],"products":["linux:linux_kernel"],"source":"nvd","synced_at":"2026-10-19T22:41:17.107060303+00:00"},"epss":{"cve":"CVE-2026-53143","score":0.00153,"percentile":0.04417,"date":"2026-11-01"},"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."]}