{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "7970cb36966c9b9183255dc097ae0446300eebcf"
            },
            {
              "fixed": "f93b00161213a0fe9f7ff1d8498ee5ca9e0a5c43"
            },
            {
              "fixed": "753b149d5a433eb19e0c1b0eb4526a6e26120d1f"
            },
            {
              "fixed": "1be55646d8a2035343b012dcb12210db7bb8b056"
            },
            {
              "fixed": "f3cc22d4df3ed58439ea7e21daa54c3608e03b78"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "6.12.0"
            },
            {
              "fixed": "6.12.91"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.33"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.0.10"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/52xxx/CVE-2026-52976.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/xe: Fix error cleanup in xe_exec_queue_create_ioctl()\n\nTwo error handling issues exist in xe_exec_queue_create_ioctl():\n\n1. When xe_hw_engine_group_add_exec_queue() fails, the error path jumps\n   to put_exec_queue which skips xe_exec_queue_kill(). If the VM is in\n   preempt fence mode, xe_vm_add_compute_exec_queue() has already added\n   the queue to the VM's compute exec queue list. Skipping the kill\n   leaves the queue on that list, leading to a dangling pointer after\n   the queue is freed.\n\n2. When xa_alloc() fails after xe_hw_engine_group_add_exec_queue() has\n   succeeded, the error path does not call\n   xe_hw_engine_group_del_exec_queue() to remove the queue from the hw\n   engine group list. The queue is then freed while still linked into\n   the hw engine group, causing a use-after-free.\n\nFix both by:\n- Changing the xe_hw_engine_group_add_exec_queue() failure path to jump\n  to kill_exec_queue so that xe_exec_queue_kill() properly removes the\n  queue from the VM's compute list.\n- Adding a del_hw_engine_group label before kill_exec_queue for the\n  xa_alloc() failure path, which removes the queue from the hw engine\n  group before proceeding with the rest of the cleanup.\n\n(cherry picked from commit 37c831f401746a45d510b312b0ed7a77b1e06ec8)",
  "id": "CVE-2026-52976",
  "modified": "2026-07-08T05:38:32.466842070Z",
  "published": "2026-06-24T16:28:53.147Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/1be55646d8a2035343b012dcb12210db7bb8b056"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/753b149d5a433eb19e0c1b0eb4526a6e26120d1f"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f3cc22d4df3ed58439ea7e21daa54c3608e03b78"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f93b00161213a0fe9f7ff1d8498ee5ca9e0a5c43"
    },
    {
      "type": "WEB",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-52976.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://access.redhat.com/security/cve/CVE-2026-52976"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/52xxx/CVE-2026-52976.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-52976"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2492284"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.7.5",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "drm/xe: Fix error cleanup in xe_exec_queue_create_ioctl()"
}