{
  "schemaVersion": 1,
  "attribution": [
    {
      "source": "CISA Known Exploited Vulnerabilities",
      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog",
      "licence": "US government work"
    },
    {
      "source": "GitHub Advisory Database",
      "url": "https://github.com/advisories",
      "licence": "CC BY 4.0"
    },
    {
      "source": "Have I Been Pwned",
      "url": "https://haveibeenpwned.com/",
      "licence": "CC BY 4.0"
    },
    {
      "source": "CVE Program (CVE records)",
      "url": "https://www.cve.org/Legal/TermsOfUse",
      "licence": "CVE Terms of Use",
      "notice": "Copyright © 1999-2026, The MITRE Corporation. CVE is a trademark and the CVE logo is a registered trademark of The MITRE Corporation.",
      "terms": "CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE™). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy."
    },
    {
      "source": "FIRST EPSS",
      "url": "https://www.first.org/epss/",
      "licence": "free to use; FIRST requests attribution"
    }
  ],
  "record": {
    "id": "CVE-2026-63880",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2026-63880",
    "idYear": 2026,
    "status": "PUBLISHED",
    "publishedAt": "2026-07-19T14:54:52.397Z",
    "updatedAt": "2026-07-19T14:54:52.397Z",
    "importedAt": "2026-10-24T01:58:20.586Z",
    "snapshot": {
      "id": "cve_2026-10-24_midnight_baseline",
      "at": "2026-10-24T00:00:00.000Z",
      "source": "https://github.com/CVEProject/cvelistV5/releases/tag/cve_2026-10-24_0100Z"
    },
    "facts": {
      "title": "drm/amdgpu: fix lock leak on ENOMEM in AMDGPU_GEM_OP_GET_MAPPING_INFO",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amdgpu: fix lock leak on ENOMEM in AMDGPU_GEM_OP_GET_MAPPING_INFO\n\nThe AMDGPU_GEM_OP_GET_MAPPING_INFO branch of amdgpu_gem_op_ioctl()\nholds three cleanup-tracked resources before calling kvcalloc():\nthe drm_gem_object reference from drm_gem_object_lookup(), the\ndrm_exec lock on the looked-up GEM via drm_exec_lock_obj(), and\nthe drm_exec lock on the per-process VM root page directory via\namdgpu_vm_lock_pd().  All three are released by the out_exec\nlabel that every other error path in this function jumps to.\nThe kvcalloc() failure path returns -ENOMEM directly, skipping\nout_exec and leaking all three.\n\nThe leaked per-process VM root PD dma_resv lock is the\nload-bearing leak: any subsequent operation on the same VM\n(further GEM ops, command-submission, eviction, TTM shrinker\ncallbacks) blocks on the held lock.  DRM_IOCTL_AMDGPU_GEM_OP is\nDRM_AUTH | DRM_RENDER_ALLOW, so this is an unprivileged-local\ndenial of service against the caller's GPU context, reachable\nby any process with /dev/dri/renderD* access.\n\nRoute the failure through out_exec so drm_exec_fini() and\ndrm_gem_object_put() run.\n\nReproduced on stock 7.0.0-10, Ryzen 7 5700U / Radeon Vega\n(Lucienne): the failing ioctl returns -ENOMEM and a second\nGET_MAPPING_INFO on the same fd then blocks in\ndrm_exec_lock_obj() on the leaked dma_resv.  SIGKILL on the\ncaller does not reap the task; the fd-release path during\nprocess exit goes through amdgpu_gem_object_close() ->\ndrm_exec_prepare_obj() on the same lock, leaving the task in D\nstate until the box is rebooted.  The patched kernel was not\nrebuilt and re-tested on this hardware; the fix is mechanical.\nTested on a single Lucienne / Vega box only.\n\nZiyi Guo posted an independent INT_MAX-bound check for\nargs->num_entries in the same branch [1]; the two patches are\ncomplementary and can land in either order.\n\n(cherry picked from commit b69d3256d79de15f54c322986ff4da68f1d65b0a)",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "4d82724f7f2b847eb0454b1aab5450545b39abd4",
              "status": "affected",
              "versionType": "git",
              "lessThan": "1eb86334e391695d4a40743b114afc15df4dc506"
            },
            {
              "version": "4d82724f7f2b847eb0454b1aab5450545b39abd4",
              "status": "affected",
              "versionType": "git",
              "lessThan": "8f643d534ffc6f1b6182e4f3acff8f04890504b9"
            },
            {
              "version": "4d82724f7f2b847eb0454b1aab5450545b39abd4",
              "status": "affected",
              "versionType": "git",
              "lessThan": "2e7f55eb408c3f72ee1957a0d0ad11d8648a6379"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "6.18",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "6.18"
            },
            {
              "version": "6.18.35",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.18.*"
            },
            {
              "version": "7.0.12",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "7.0.*"
            },
            {
              "version": "7.1",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}