CVE-2025-71302 (GCVE-0-2025-71302)
Vulnerability from cvelistv5
Published
2026-05-08 13:26
Modified
2026-08-05 12:12
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: drm/panthor: fix for dma-fence safe access rules Commit 506aa8b02a8d6 ("dma-fence: Add safe access helpers and document the rules") details the dma-fence safe access rules. The most common culprit is that drm_sched_fence_get_timeline_name may race with group_free_queue.
References
Impacted products
Vendor Product Version
Linux Linux Version: de85488138247d034eb3241840424a54d660926b
Version: de85488138247d034eb3241840424a54d660926b
Version: de85488138247d034eb3241840424a54d660926b
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/gpu/drm/panthor/panthor_sched.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "ab8c0de60f16d7e0b162ccbbb35fcf1f277c97c2",
              "status": "affected",
              "version": "de85488138247d034eb3241840424a54d660926b",
              "versionType": "git"
            },
            {
              "lessThan": "eae60933abd11df013876f647c9edbd35ce67615",
              "status": "affected",
              "version": "de85488138247d034eb3241840424a54d660926b",
              "versionType": "git"
            },
            {
              "lessThan": "efe24898485c5c831e629d9c6fb9350c35cb576f",
              "status": "affected",
              "version": "de85488138247d034eb3241840424a54d660926b",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/gpu/drm/panthor/panthor_sched.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.10"
            },
            {
              "lessThan": "6.10",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.16",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.19.*",
              "status": "unaffected",
              "version": "6.19.6",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.0",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.16",
                  "versionStartIncluding": "6.10",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.19.6",
                  "versionStartIncluding": "6.10",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.0",
                  "versionStartIncluding": "6.10",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/panthor: fix for dma-fence safe access rules\n\nCommit 506aa8b02a8d6 (\"dma-fence: Add safe access helpers and document\nthe rules\") details the dma-fence safe access rules. The most common\nculprit is that drm_sched_fence_get_timeline_name may race with\ngroup_free_queue."
        }
      ],
      "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 - An attacker reaches the flaw through DRM ioctls on a local Panthor render node and SYNC_IOC_FILE_INFO on an exported sync-file.\nAC:L - The attacker controls both sides by querying the exported fence concurrently with GROUP_DESTROY or file closure and can repeat the race while spraying reclaimed heap objects.\nPR:L - All required Panthor, syncobj, and export operations are DRM_RENDER_ALLOW; ordinary-priority groups require neither DRM master nor a capability.\nUI:N - The attacker independently creates the VM, group, job, syncobj, and sync-file and triggers teardown without victim action.\nS:U - The vulnerability compromises resources governed by the same host kernel and does not inherently cross a VM or IOMMU security boundary.\nC:H - The exported scheduler fence can outlive the freed queue, allowing the timeline callback to dereference reclaimed scheduler and name data. Heap reclamation can provide a chosen source pointer whose contents are copied through SYNC_IOC_FILE_INFO, supporting repeated kernel-memory disclosure.\nI:H - This is a kernel heap use-after-free involving surviving dma-fence references into reclaimed queue state. Under conservative UAF scoring, attacker-influenced heap reuse is treated as potentially enabling arbitrary memory modification or control-flow hijacking.\nA:H - Dereferencing a stale or attacker-influenced scheduler-name pointer can cause a kernel fault, oops, or panic, and an unprivileged attacker can trigger the condition repeatedly."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-05T12:12:44.474Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/ab8c0de60f16d7e0b162ccbbb35fcf1f277c97c2"
        },
        {
          "url": "https://git.kernel.org/stable/c/eae60933abd11df013876f647c9edbd35ce67615"
        },
        {
          "url": "https://git.kernel.org/stable/c/efe24898485c5c831e629d9c6fb9350c35cb576f"
        }
      ],
      "title": "drm/panthor: fix for dma-fence safe access rules",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2025-71302",
    "datePublished": "2026-05-08T13:26:11.418Z",
    "dateReserved": "2026-05-08T13:14:33.087Z",
    "dateUpdated": "2026-08-05T12:12:44.474Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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