{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "d38ceaf99ed015f2a0b9af3499791bd3a3daae21"
            },
            {
              "fixed": "7e9954e7212042ec808b06181b365b14f00c6f0a"
            },
            {
              "fixed": "070229262ede37d17c4ea596650deb6e5eb5d106"
            },
            {
              "fixed": "5f46322e0b84af29e10eb951ff45bd6ea40640de"
            },
            {
              "fixed": "71aa45f7bfe46fbc6f51e7832573ff49b6005fea"
            },
            {
              "fixed": "e3ee74d6dbbe409eb99546a7b0a02b2782f9021d"
            },
            {
              "fixed": "931cd1d1baeae68e8eb2c23bc1f3d8934dca6241"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "4.2.0"
            },
            {
              "fixed": "6.1.185"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.2.0"
            },
            {
              "fixed": "6.6.153"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.12.105"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.46"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.1.10"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/80xxx/CVE-2026-80539.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amdgpu: disallow multiple FENCE chunks in one submit\n\namdgpu_cs_pass1() dispatches on chunk_id once per chunk without\nrejecting repeated ids. p-\u003euf_bo is a single-slot field, so a\nsubmission carrying two AMDGPU_CHUNK_ID_FENCE chunks runs\namdgpu_cs_p1_user_fence() twice, and the second run overwrites\np-\u003euf_bo with a freshly referenced BO without dropping the reference\ntaken by the first.\n\namdgpu_cs_parser_fini() only unrefs the final p-\u003euf_bo, so every FENCE\nchunk but the last leaks a BO reference. The leaked BO outlives handle\nclose and process exit.\n\nReject duplicate FENCE chunks the same way commit fec5f8e8c6bc\n(\"drm/amdgpu: disallow multiple BO_HANDLES chunks in one submit\") did\nfor p-\u003ebo_list.\n\n(cherry picked from commit 665b1fc2a1845206408f9a2c6da67101789edb82)",
  "id": "CVE-2026-80539",
  "modified": "2026-08-28T03:31:02.537869553Z",
  "published": "2026-08-26T14:37:13.367Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/070229262ede37d17c4ea596650deb6e5eb5d106"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/5f46322e0b84af29e10eb951ff45bd6ea40640de"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/71aa45f7bfe46fbc6f51e7832573ff49b6005fea"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/7e9954e7212042ec808b06181b365b14f00c6f0a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/931cd1d1baeae68e8eb2c23bc1f3d8934dca6241"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e3ee74d6dbbe409eb99546a7b0a02b2782f9021d"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/80xxx/CVE-2026-80539.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-80539"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.0",
  "summary": "drm/amdgpu: disallow multiple FENCE chunks in one submit"
}