{
  "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-2026-53163",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2026-53163",
    "idYear": 2026,
    "status": "PUBLISHED",
    "publishedAt": "2026-06-25T08:38:44.108Z",
    "updatedAt": "2026-07-24T14:33:48.972Z",
    "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": "locking/rtmutex: Skip remove_waiter() when waiter is not enqueued",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nlocking/rtmutex: Skip remove_waiter() when waiter is not enqueued\n\nsyzbot triggered the following splat in remove_waiter() via\nFUTEX_CMP_REQUEUE_PI:\n\n  KASAN: null-ptr-deref in range [0x0000000000000a88-0x0000000000000a8f]\n   class_raw_spinlock_constructor\n   remove_waiter+0x159/0x1200 kernel/locking/rtmutex.c:1561\n   rt_mutex_start_proxy_lock+0x103/0x120\n   futex_requeue+0x10e4/0x20d0\n   __x64_sys_futex+0x34f/0x4d0\n\ntask_blocks_on_rt_mutex() does not arm the waiter upon deadlock detection,\nleaving waiter->task nil, where 3bfdc63936dd (\"rtmutex: Use waiter::task instead\nof current in remove_waiter()\") made this fatal.\n\nFurthermore, rt_mutex_start_proxy_lock() should not be calling into remove_waiter()\nupon a successfully grabbing the rtmutex. 1a1fb985f2e2 (\"futex: Handle early deadlock\nreturn correctly\"), moved the remove_waiter() out of __rt_mutex_start_proxy_lock()\n(where 'ret' was only ever 0 or < 0) into the wrapper. Tighten this check to\naccount for try_to_take_rt_mutex().",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "f3fa3424bceb128d2be4b3745506b22844b87db7",
              "status": "affected",
              "versionType": "git",
              "lessThan": "bfbc047ceb42c0e1fac8f3a155d4548a8bbe76b1"
            },
            {
              "version": "838ce5cb5d93c3ab8b27e75bc6ad905a94b752fd",
              "status": "affected",
              "versionType": "git",
              "lessThan": "4ffacf76a457b7ca8ac05f5df8740b0d8f53574a"
            },
            {
              "version": "d8cce4773c2b23d819baf5abedc62f7b430e8745",
              "status": "affected",
              "versionType": "git",
              "lessThan": "4afda3a1da02129568a3a2f1898aa13e6763bcba"
            },
            {
              "version": "8a1fc8d698ac5e5916e3082a0f74450d71f9611f",
              "status": "affected",
              "versionType": "git",
              "lessThan": "6707d7e0b71748cb3cd95bad81dae5fe1b3c8f48"
            },
            {
              "version": "6d52dfcb2a5db86e346cf51f8fcf2071b8085166",
              "status": "affected",
              "versionType": "git",
              "lessThan": "5799f9bd7fee40370b93ab1ddf001cdc7017c14d"
            },
            {
              "version": "3fb7394a837740770f0d6b4b30567e60786a63f2",
              "status": "affected",
              "versionType": "git",
              "lessThan": "a388e3dfaf9538a680de5ed43a8ebb5dd45b6e53"
            },
            {
              "version": "88614876370aac8ad1050ad785a4c095ba17ac11",
              "status": "affected",
              "versionType": "git",
              "lessThan": "55363fa0a04524d11efeaadee734d2db1756ed27"
            },
            {
              "version": "3bfdc63936dd4773109b7b8c280c0f3b5ae7d349",
              "status": "affected",
              "versionType": "git",
              "lessThan": "40a25d59e85b3c8709ac2424d44f65610467871e"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "6.1.175",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "6.1.177"
            },
            {
              "version": "6.6.140",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "6.6.144"
            },
            {
              "version": "6.12.86",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "6.12.95"
            },
            {
              "version": "6.18.27",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "6.18.36"
            },
            {
              "version": "7.0.4",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "7.0.13"
            }
          ]
        }
      ]
    }
  }
}