{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "24835e442f289813aa568d142a755672a740503c"
            },
            {
              "fixed": "c5517b71101f61a45144e3cf77a19626355272de"
            },
            {
              "fixed": "866a04137dac7e82a3848851061ff7ed15c2847e"
            },
            {
              "fixed": "6a6a7aae4681a20cd32789fea9a487aaafa0e7a3"
            },
            {
              "fixed": "e2f27b5ed9084feb7bae9ef2bc80de37c92280b1"
            },
            {
              "fixed": "ff73f5f43d032c3da3c534c517f661e8dfeb358a"
            },
            {
              "fixed": "66b1b309886337745d395bbc158440ab196305ce"
            },
            {
              "fixed": "e6195b941fdc8d81fc431c9f25539cf6c6234b51"
            },
            {
              "fixed": "4d4be202165e832d74849b4a68e289a2a377039c"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        },
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "last_affected": "c75fe7899538890109aad7bbf92b2f304389e825"
            },
            {
              "last_affected": "2a3241044b1c4ecc13f73b7158881881fb7534a1"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        },
        {
          "events": [
            {
              "introduced": "4.9.19"
            },
            {
              "fixed": "4.10"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        },
        {
          "events": [
            {
              "introduced": "4.10.7"
            },
            {
              "fixed": "4.11"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "4.11.0"
            },
            {
              "fixed": "5.10.270"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.11.0"
            },
            {
              "fixed": "5.15.221"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.16.0"
            },
            {
              "fixed": "6.1.188"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.2.0"
            },
            {
              "fixed": "6.6.157"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.12.110"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.51"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.2.5"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/89xxx/CVE-2026-89816.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm: Fix drm_crtc_commit leak if signaled when PAGE_FLIP_EVENT is used\n\nCommit 1c6ceeee6ebb (\"drm/atomic: Fix memleak on ERESTARTSYS during\nnon-blocking commits\") fixed a very similar issue when the event was\nallocated by drm_atomic_helper_setup_commit() itself.\n\nHowever, if the event is allocated in prepare_signaling(), it will also be\nset to NULL in complete_signaling(), which prevents drm_crtc_commit from\nbeing put in __drm_atomic_helper_crtc_destroy_state().\n\nDropping the reference when the event is set to NULL at\ncomplete_signaling() fixes the leak.\n\nThe leak can be reproduced by sending a signal to the thread using\nDRM_MODE_PAGE_FLIP_EVENT and using a sw_sync fence to cause the atomic\nioctl to block at drm_atomic_helper_wait_for_fences(). It happened both\nwith amdgpu and vkms.",
  "id": "CVE-2026-89816",
  "modified": "2026-09-18T03:30:31.650322549Z",
  "published": "2026-09-16T10:30:49.052Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/4d4be202165e832d74849b4a68e289a2a377039c"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/66b1b309886337745d395bbc158440ab196305ce"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6a6a7aae4681a20cd32789fea9a487aaafa0e7a3"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/866a04137dac7e82a3848851061ff7ed15c2847e"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c5517b71101f61a45144e3cf77a19626355272de"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e2f27b5ed9084feb7bae9ef2bc80de37c92280b1"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e6195b941fdc8d81fc431c9f25539cf6c6234b51"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ff73f5f43d032c3da3c534c517f661e8dfeb358a"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/89xxx/CVE-2026-89816.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-89816"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.0",
  "summary": "drm: Fix drm_crtc_commit leak if signaled when PAGE_FLIP_EVENT is used"
}