{
  "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-2022-49939",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2022-49939",
    "idYear": 2022,
    "status": "PUBLISHED",
    "publishedAt": "2025-06-18T10:54:40.100Z",
    "updatedAt": "2026-08-05T08:56:48.206Z",
    "importedAt": "2026-10-24T01:56:49.724Z",
    "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": "binder: fix UAF of ref->proc caused by race condition",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nbinder: fix UAF of ref->proc caused by race condition\n\nA transaction of type BINDER_TYPE_WEAK_HANDLE can fail to increment the\nreference for a node. In this case, the target proc normally releases\nthe failed reference upon close as expected. However, if the target is\ndying in parallel the call will race with binder_deferred_release(), so\nthe target could have released all of its references by now leaving the\ncleanup of the new failed reference unhandled.\n\nThe transaction then ends and the target proc gets released making the\nref->proc now a dangling pointer. Later on, ref->node is closed and we\nattempt to take spin_lock(&ref->proc->inner_lock), which leads to the\nuse-after-free bug reported below. Let's fix this by cleaning up the\nfailed reference on the spot instead of relying on the target to do so.\n\n  ==================================================================\n  BUG: KASAN: use-after-free in _raw_spin_lock+0xa8/0x150\n  Write of size 4 at addr ffff5ca207094238 by task kworker/1:0/590\n\n  CPU: 1 PID: 590 Comm: kworker/1:0 Not tainted 5.19.0-rc8 #10\n  Hardware name: linux,dummy-virt (DT)\n  Workqueue: events binder_deferred_func\n  Call trace:\n   dump_backtrace.part.0+0x1d0/0x1e0\n   show_stack+0x18/0x70\n   dump_stack_lvl+0x68/0x84\n   print_report+0x2e4/0x61c\n   kasan_report+0xa4/0x110\n   kasan_check_range+0xfc/0x1a4\n   __kasan_check_write+0x3c/0x50\n   _raw_spin_lock+0xa8/0x150\n   binder_deferred_func+0x5e0/0x9b0\n   process_one_work+0x38c/0x5f0\n   worker_thread+0x9c/0x694\n   kthread+0x188/0x190\n   ret_from_fork+0x10/0x20",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "372e3147df7016ebeaa372939e8774a1292db558",
              "status": "affected",
              "versionType": "git",
              "lessThan": "229f47603dd306bc0eb1a831439adb8e48bb0eae"
            },
            {
              "version": "372e3147df7016ebeaa372939e8774a1292db558",
              "status": "affected",
              "versionType": "git",
              "lessThan": "06e5b43ca4dab06a92bf4c2f33766e6fb11b880a"
            },
            {
              "version": "372e3147df7016ebeaa372939e8774a1292db558",
              "status": "affected",
              "versionType": "git",
              "lessThan": "30d0901b307f27d36b2655fb3048cf31ee0e89c0"
            },
            {
              "version": "372e3147df7016ebeaa372939e8774a1292db558",
              "status": "affected",
              "versionType": "git",
              "lessThan": "9629f2dfdb1dad294b468038ff8e161e94d0b609"
            },
            {
              "version": "372e3147df7016ebeaa372939e8774a1292db558",
              "status": "affected",
              "versionType": "git",
              "lessThan": "c2a4b5dc8fa71af73bab704d0cac42ac39767ed6"
            },
            {
              "version": "372e3147df7016ebeaa372939e8774a1292db558",
              "status": "affected",
              "versionType": "git",
              "lessThan": "603a47f2ae56bf68288784d3c0a8c5b8e0a827ed"
            },
            {
              "version": "372e3147df7016ebeaa372939e8774a1292db558",
              "status": "affected",
              "versionType": "git",
              "lessThan": "a0e44c64b6061dda7e00b7c458e4523e2331b739"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "4.14",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "4.14"
            },
            {
              "version": "4.14.293",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "4.14.*"
            },
            {
              "version": "4.19.258",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "4.19.*"
            },
            {
              "version": "5.4.213",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.4.*"
            },
            {
              "version": "5.10.142",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.10.*"
            },
            {
              "version": "5.15.66",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "version": "5.19.8",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.19.*"
            },
            {
              "version": "6.0",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}