{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "ac9287055ff16a092416c76a19006764e4c6a978"
            },
            {
              "fixed": "3f190956404da55560056ce20606010e18bc059c"
            },
            {
              "fixed": "2aa9ea2bd5146d237c8cc16d8737d878b0298a94"
            },
            {
              "fixed": "315d2e5741a81b0be763e80413a2677e22b7e596"
            },
            {
              "fixed": "24668ca3ec19434d7a9574bf9112f2b0614c3a4e"
            },
            {
              "fixed": "84c4c36acd5c4b2558b5069f869a165b2c655c84"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "6.5.0"
            },
            {
              "fixed": "6.6.148"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.12.101"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.42"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.1.6"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/68xxx/CVE-2026-68272.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amdgpu: validate CP_GFX_SHADOW chunk size in CS pass1\n\nAdd a minimum-length check for the AMDGPU_CHUNK_ID_CP_GFX_SHADOW chunk in\namdgpu_cs_pass1(), matching the gate already present for the IB, FENCE and\nBO_HANDLES chunk types.\n\nThe CP_GFX_SHADOW case previously shared a bare break with the dependency\nand syncobj chunk types, which do not dereference a fixed-size struct. When\nuserspace submits this chunk with length_dw == 0, vmemdup_array_user() is\ncalled with size 0 and returns ZERO_SIZE_PTR, which passes the IS_ERR()\ncheck. amdgpu_cs_p2_shadow() then dereferences chunk-\u003ekdata as a struct\ndrm_amdgpu_cs_chunk_cp_gfx_shadow (reading shadow-\u003eflags), faulting on the\nZERO_SIZE_PTR and causing a NULL-pointer dereference.\n\nThis is reachable by an unprivileged process in the render group. Reject\nundersized chunks with -EINVAL during pass1 so the bad submission is\nrejected before pass2 ever dereferences the data.\n\n(cherry picked from commit 7f61b2eef7415eccdb40850aca0de94211948657)",
  "id": "CVE-2026-68272",
  "modified": "2026-08-12T03:51:17.455062298Z",
  "published": "2026-08-10T12:01:47.708Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/24668ca3ec19434d7a9574bf9112f2b0614c3a4e"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/2aa9ea2bd5146d237c8cc16d8737d878b0298a94"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/315d2e5741a81b0be763e80413a2677e22b7e596"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3f190956404da55560056ce20606010e18bc059c"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/84c4c36acd5c4b2558b5069f869a165b2c655c84"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/68xxx/CVE-2026-68272.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-68272"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.0",
  "summary": "drm/amdgpu: validate CP_GFX_SHADOW chunk size in CS pass1"
}