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FKIE_CVE-2026-53143

Vulnerability from fkie_nvd - Published: 2026-06-25 09:16 - Updated: 2026-08-20 13:19
Severity
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
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
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/16dad1fb0d783a4008de30e32d0038c393de05b1Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/2c5b66c9b4057b385566940935ebc32f6e6ebfd2Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/352ea59028ea48a6fff77f19ae28f98f71946a80Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/d02f05d30f35b036f7cbaf72de634affb5b38ec6Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/d3efcadfe3eea5b4263b8f2d4463b15c9fc46a64Patch
0b0ca135-0b70-47e7-9f44-1890c2a1c46chttps://access.redhat.com/errata/RHSA-2026:57251
0b0ca135-0b70-47e7-9f44-1890c2a1c46chttps://access.redhat.com/errata/RHSA-2026:57252
0b0ca135-0b70-47e7-9f44-1890c2a1c46chttps://access.redhat.com/security/cve/CVE-2026-53143Third Party Advisory
0b0ca135-0b70-47e7-9f44-1890c2a1c46chttps://bugzilla.redhat.com/show_bug.cgi?id=2492719Third Party Advisory
0b0ca135-0b70-47e7-9f44-1890c2a1c46chttps://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-53143.jsonThird Party Advisory
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel 7.1
linux linux_kernel 7.1
linux linux_kernel 7.1
linux linux_kernel 7.1
linux linux_kernel 7.1
linux linux_kernel 7.1
To clipboard 

{
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  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "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)"
    }
  ],
  "id": "CVE-2026-53143",
  "lastModified": "2026-08-20T13:19:00.560",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 7.8,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
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          "baseScore": 7.0,
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          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
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        "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c",
        "type": "Secondary"
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  "published": "2026-06-25T09:16:31.607",
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      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-787"
        }
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      "source": "nvd@nist.gov",
      "type": "Primary"
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          "value": "CWE-131"
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      "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c",
      "type": "Secondary"
    }
  ]
}



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