{"id":"CVE-2026-53143","summary":"drm/amdkfd: Fix buffer overflow in SDMA queue checkpoint/restore on GFX11","details":"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)","modified":"2026-07-08T08:13:43.774724489Z","published":"2026-06-25T08:38:30.901Z","database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/53xxx/CVE-2026-53143.json","cna_assigner":"Linux"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/16dad1fb0d783a4008de30e32d0038c393de05b1"},{"type":"WEB","url":"https://git.kernel.org/stable/c/2c5b66c9b4057b385566940935ebc32f6e6ebfd2"},{"type":"WEB","url":"https://git.kernel.org/stable/c/352ea59028ea48a6fff77f19ae28f98f71946a80"},{"type":"WEB","url":"https://git.kernel.org/stable/c/d02f05d30f35b036f7cbaf72de634affb5b38ec6"},{"type":"WEB","url":"https://git.kernel.org/stable/c/d3efcadfe3eea5b4263b8f2d4463b15c9fc46a64"},{"type":"WEB","url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-53143.json"},{"type":"ADVISORY","url":"https://access.redhat.com/security/cve/CVE-2026-53143"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/53xxx/CVE-2026-53143.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-53143"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2492719"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"cc009e613de6560eb499f8bc92c80a737752cb30"},{"fixed":"16dad1fb0d783a4008de30e32d0038c393de05b1"},{"fixed":"2c5b66c9b4057b385566940935ebc32f6e6ebfd2"},{"fixed":"d3efcadfe3eea5b4263b8f2d4463b15c9fc46a64"},{"fixed":"d02f05d30f35b036f7cbaf72de634affb5b38ec6"},{"fixed":"352ea59028ea48a6fff77f19ae28f98f71946a80"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-53143.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"5.19.0"},{"fixed":"6.6.143"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.7.0"},{"fixed":"6.12.94"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.13.0"},{"fixed":"6.18.36"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"7.0.13"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-53143.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H"}]}