{
  "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-2022-49450",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2022-49450",
    "idYear": 2022,
    "status": "PUBLISHED",
    "publishedAt": "2025-02-26T02:13:00.379Z",
    "updatedAt": "2026-05-11T19:00:06.588Z",
    "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": "rxrpc: Fix listen() setting the bar too high for the prealloc rings",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nrxrpc: Fix listen() setting the bar too high for the prealloc rings\n\nAF_RXRPC's listen() handler lets you set the backlog up to 32 (if you bump\nup the sysctl), but whilst the preallocation circular buffers have 32 slots\nin them, one of them has to be a dead slot because we're using CIRC_CNT().\n\nThis means that listen(rxrpc_sock, 32) will cause an oops when the socket\nis closed because rxrpc_service_prealloc_one() allocated one too many calls\nand rxrpc_discard_prealloc() won't then be able to get rid of them because\nit'll think the ring is empty.  rxrpc_release_calls_on_socket() then tries\nto abort them, but oopses because call->peer isn't yet set.\n\nFix this by setting the maximum backlog to RXRPC_BACKLOG_MAX - 1 to match\nthe ring capacity.\n\n BUG: kernel NULL pointer dereference, address: 0000000000000086\n ...\n RIP: 0010:rxrpc_send_abort_packet+0x73/0x240 [rxrpc]\n Call Trace:\n  <TASK>\n  ? __wake_up_common_lock+0x7a/0x90\n  ? rxrpc_notify_socket+0x8e/0x140 [rxrpc]\n  ? rxrpc_abort_call+0x4c/0x60 [rxrpc]\n  rxrpc_release_calls_on_socket+0x107/0x1a0 [rxrpc]\n  rxrpc_release+0xc9/0x1c0 [rxrpc]\n  __sock_release+0x37/0xa0\n  sock_close+0x11/0x20\n  __fput+0x89/0x240\n  task_work_run+0x59/0x90\n  do_exit+0x319/0xaa0",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "00e907127e6f86d0f9b122d9b4347a8aa09a8b61",
              "status": "affected",
              "versionType": "git",
              "lessThan": "61fb38cfbb1d54d3dafd0c25752f684b3cd00b32"
            },
            {
              "version": "00e907127e6f86d0f9b122d9b4347a8aa09a8b61",
              "status": "affected",
              "versionType": "git",
              "lessThan": "616f76498d5ddf26b997caf64a95cda3c8a55533"
            },
            {
              "version": "00e907127e6f86d0f9b122d9b4347a8aa09a8b61",
              "status": "affected",
              "versionType": "git",
              "lessThan": "4a3a78b7918bdd723d8c7c9786522ca969bffcc4"
            },
            {
              "version": "00e907127e6f86d0f9b122d9b4347a8aa09a8b61",
              "status": "affected",
              "versionType": "git",
              "lessThan": "91b34bf0409f43bb60453bab23c5beadd726d022"
            },
            {
              "version": "00e907127e6f86d0f9b122d9b4347a8aa09a8b61",
              "status": "affected",
              "versionType": "git",
              "lessThan": "5b4826657d36c218e9f08e8d3223b0edce3de88f"
            },
            {
              "version": "00e907127e6f86d0f9b122d9b4347a8aa09a8b61",
              "status": "affected",
              "versionType": "git",
              "lessThan": "b3a9b227d5e7467b8518160ff034ea22bb9de573"
            },
            {
              "version": "00e907127e6f86d0f9b122d9b4347a8aa09a8b61",
              "status": "affected",
              "versionType": "git",
              "lessThan": "369de57492c4f1a42563c5a3bd365822ca3bfc79"
            },
            {
              "version": "00e907127e6f86d0f9b122d9b4347a8aa09a8b61",
              "status": "affected",
              "versionType": "git",
              "lessThan": "e198f1930050e3115c80b67d9249f80f98a27c67"
            },
            {
              "version": "00e907127e6f86d0f9b122d9b4347a8aa09a8b61",
              "status": "affected",
              "versionType": "git",
              "lessThan": "88e22159750b0d55793302eeed8ee603f5c1a95c"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "4.9",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "4.9"
            },
            {
              "version": "4.9.318",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "4.9.*"
            },
            {
              "version": "4.14.283",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "4.14.*"
            },
            {
              "version": "4.19.247",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "4.19.*"
            },
            {
              "version": "5.4.198",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.4.*"
            },
            {
              "version": "5.10.121",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.10.*"
            },
            {
              "version": "5.15.46",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "version": "5.17.14",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.17.*"
            },
            {
              "version": "5.18.3",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.18.*"
            },
            {
              "version": "5.19",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}