CVE-2026-53143: drm/amdkfd: Fix buffer overflow in SDMA queue checkpoint/restore on GFX11
drm/amdkfd: Fix buffer overflow in SDMA queue checkpoint/restore on GFX11
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 6.6.143.1-1 - Upgrade
Upgrade
Linux kernel drm/amdkfd (Fix buffer overflow in SDMA queue checkpoint/restore on GFX11)to a version that resolves this vulnerability.Fixed in v11 - Configuration
In the Linux kernel kfd MQD manager code for v11, ensure the SDMA-specific checkpoint_mqd_sdma() and restore_mqd_sdma() functions use sizeof(struct v11_compute_mqd) (2048 bytes) rather than sizeof(struct v11_sdma_mqd) (512 bytes) to prevent corrupting/leaking 1536 bytes of adjacent GTT memory during CRIU checkpoint/restore of SDMA queues on Navi3x.
drm/amdkfd (KFD_MQD_TYPE_SDMA checkpoint/restore) mqd buffer size selection = Use sizeof(struct v11_compute_mqd) (2048 bytes) instead of sizeof(struct v11_sdma_mqd) (512 bytes) for v11 SDMA MQD checkpoint_mqd/restore_mqd handling
Event History
Frequently Asked Questions
What is the severity of CVE-2026-53143?
CVE-2026-53143 has a high severity rating of 7.8.
How do I fix CVE-2026-53143?
To fix CVE-2026-53143, update the Linux kernel to the latest version that contains the patch for this vulnerability.
What type of vulnerability is CVE-2026-53143?
CVE-2026-53143 is a buffer overflow vulnerability found in the DRM component of the Linux kernel.
Which software is affected by CVE-2026-53143?
CVE-2026-53143 affects the Linux kernel, specifically the drm/amdkfd module.
What impact does CVE-2026-53143 have on systems?
CVE-2026-53143 can potentially allow attackers to alter memory, leading to system crashes or unauthorized access.