CVE-2025-68749 (GCVE-0-2025-68749)
Vulnerability from cvelistv5
Published
2025-12-24 12:09
Modified
2026-08-05 12:11
Severity ?
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: accel/ivpu: Fix race condition when unbinding BOs Fix 'Memory manager not clean during takedown' warning that occurs when ivpu_gem_bo_free() removes the BO from the BOs list before it gets unmapped. Then file_priv_unbind() triggers a warning in drm_mm_takedown() during context teardown. Protect the unmapping sequence with bo_list_lock to ensure the BO is always fully unmapped when removed from the list. This ensures the BO is either fully unmapped at context teardown time or present on the list and unmapped by file_priv_unbind().
References
Impacted products
Vendor Product Version
Linux Linux Version: 48aea7f2a2efae6a1bd201061c71a81b3f3b7e55
Version: 48aea7f2a2efae6a1bd201061c71a81b3f3b7e55
Version: 48aea7f2a2efae6a1bd201061c71a81b3f3b7e55
Version: 48aea7f2a2efae6a1bd201061c71a81b3f3b7e55
 Create a notification for this product.
Show details on NVD website

To clipboard 

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/accel/ivpu/ivpu_gem.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "0328bb097bef05a796217c54b3d651cc3782827c",
              "status": "affected",
              "version": "48aea7f2a2efae6a1bd201061c71a81b3f3b7e55",
              "versionType": "git"
            },
            {
              "lessThan": "fb16493ebd8f171bcf0772262619618a131f30f7",
              "status": "affected",
              "version": "48aea7f2a2efae6a1bd201061c71a81b3f3b7e55",
              "versionType": "git"
            },
            {
              "lessThan": "d71333ffdd3707d84cfb95acfaf8ba892adc066b",
              "status": "affected",
              "version": "48aea7f2a2efae6a1bd201061c71a81b3f3b7e55",
              "versionType": "git"
            },
            {
              "lessThan": "00812636df370bedf4e44a0c81b86ea96bca8628",
              "status": "affected",
              "version": "48aea7f2a2efae6a1bd201061c71a81b3f3b7e55",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/accel/ivpu/ivpu_gem.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.8"
            },
            {
              "lessThan": "6.8",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.68",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.17.*",
              "status": "unaffected",
              "version": "6.17.13",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.2",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.19",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.68",
                  "versionStartIncluding": "6.8",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.17.13",
                  "versionStartIncluding": "6.8",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.2",
                  "versionStartIncluding": "6.8",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.19",
                  "versionStartIncluding": "6.8",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\naccel/ivpu: Fix race condition when unbinding BOs\n\nFix \u0027Memory manager not clean during takedown\u0027 warning that occurs\nwhen ivpu_gem_bo_free() removes the BO from the BOs list before it\ngets unmapped. Then file_priv_unbind() triggers a warning in\ndrm_mm_takedown() during context teardown.\n\nProtect the unmapping sequence with bo_list_lock to ensure the BO is\nalways fully unmapped when removed from the list. This ensures the BO\nis either fully unmapped at context teardown time or present on the\nlist and unmapped by file_priv_unbind()."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 7.8,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "scenarios": [
            {
              "lang": "en",
              "value": "AV:L - The vulnerability is reached through local GEM/PRIME ioctls and concurrent descriptor closes on /dev/accel/accelN; no remote or physical path exists.\nAC:L - The attacker controls both race participants by concurrently closing an exported dma-buf and its owning accelerator context. Repetition and multiple BOs can enlarge the opportunity without conditions outside attacker control.\nPR:L - Any unprivileged process permitted to use the accelerator node, commonly through the render group, can invoke the required operations. No capability, authentication, DRM-master, or root-only check applies.\nUI:N - Exploitation requires only attacker-initiated ioctls and descriptor teardown, with no action by another user.\nS:U - The resulting corruption affects the host kernel within the same security authority; it does not inherently cross a VM or IOMMU boundary.\nC:H - The race can access a freed MMU context and freed page-table structures, producing exploitable kernel memory corruption. Successful kernel code execution would permit arbitrary kernel-memory disclosure.\nI:H - The stale unmap writes through freed page-table pointers, while stale drm_mm removal mutates list and red-black-tree state in freed or reclaimed memory. Attacker-directed heap reclamation could turn this into arbitrary writes or control-flow hijacking.\nA:H - A mapped BO can cause access to freed or unmapped page-table storage and a destroyed context, resulting in an oops or kernel panic. The attacker can repeatedly trigger the teardown race."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-05T12:11:18.953Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/0328bb097bef05a796217c54b3d651cc3782827c"
        },
        {
          "url": "https://git.kernel.org/stable/c/fb16493ebd8f171bcf0772262619618a131f30f7"
        },
        {
          "url": "https://git.kernel.org/stable/c/d71333ffdd3707d84cfb95acfaf8ba892adc066b"
        },
        {
          "url": "https://git.kernel.org/stable/c/00812636df370bedf4e44a0c81b86ea96bca8628"
        }
      ],
      "title": "accel/ivpu: Fix race condition when unbinding BOs",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2025-68749",
    "datePublished": "2025-12-24T12:09:44.301Z",
    "dateReserved": "2025-12-24T10:30:51.032Z",
    "dateUpdated": "2026-08-05T12:11:18.953Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




Sightings

Author Source Type Date

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
  • Confirmed: The vulnerability is confirmed from an analyst perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
  • Patched: This vulnerability was successfully patched by the user reporting the sighting.
  • Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
  • Not confirmed: The user expresses doubt about the veracity of the vulnerability.
  • Not patched: This vulnerability was not successfully patched by the user reporting the sighting.