{
  "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-2023-54112",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2023-54112",
    "idYear": 2023,
    "status": "PUBLISHED",
    "publishedAt": "2025-12-24T13:06:34.854Z",
    "updatedAt": "2026-05-11T19:55:42.470Z",
    "importedAt": "2026-10-24T01:57:03.413Z",
    "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": "kcm: Fix memory leak in error path of kcm_sendmsg()",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nkcm: Fix memory leak in error path of kcm_sendmsg()\n\nsyzbot reported a memory leak like below:\n\nBUG: memory leak\nunreferenced object 0xffff88810b088c00 (size 240):\n  comm \"syz-executor186\", pid 5012, jiffies 4294943306 (age 13.680s)\n  hex dump (first 32 bytes):\n    00 89 08 0b 81 88 ff ff 00 00 00 00 00 00 00 00  ................\n    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................\n  backtrace:\n    [<ffffffff83e5d5ff>] __alloc_skb+0x1ef/0x230 net/core/skbuff.c:634\n    [<ffffffff84606e59>] alloc_skb include/linux/skbuff.h:1289 [inline]\n    [<ffffffff84606e59>] kcm_sendmsg+0x269/0x1050 net/kcm/kcmsock.c:815\n    [<ffffffff83e479c6>] sock_sendmsg_nosec net/socket.c:725 [inline]\n    [<ffffffff83e479c6>] sock_sendmsg+0x56/0xb0 net/socket.c:748\n    [<ffffffff83e47f55>] ____sys_sendmsg+0x365/0x470 net/socket.c:2494\n    [<ffffffff83e4c389>] ___sys_sendmsg+0xc9/0x130 net/socket.c:2548\n    [<ffffffff83e4c536>] __sys_sendmsg+0xa6/0x120 net/socket.c:2577\n    [<ffffffff84ad7bb8>] do_syscall_x64 arch/x86/entry/common.c:50 [inline]\n    [<ffffffff84ad7bb8>] do_syscall_64+0x38/0xb0 arch/x86/entry/common.c:80\n    [<ffffffff84c0008b>] entry_SYSCALL_64_after_hwframe+0x63/0xcd\n\nIn kcm_sendmsg(), kcm_tx_msg(head)->last_skb is used as a cursor to append\nnewly allocated skbs to 'head'. If some bytes are copied, an error occurred,\nand jumped to out_error label, 'last_skb' is left unmodified. A later\nkcm_sendmsg() will use an obsoleted 'last_skb' reference, corrupting the\n'head' frag_list and causing the leak.\n\nThis patch fixes this issue by properly updating the last allocated skb in\n'last_skb'.",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "ab7ac4eb9832e32a09f4e8042705484d2fb0aad3",
              "status": "affected",
              "versionType": "git",
              "lessThan": "8dc7eb757b1652b82725f32e0c89a1e9f6c0e13b"
            },
            {
              "version": "ab7ac4eb9832e32a09f4e8042705484d2fb0aad3",
              "status": "affected",
              "versionType": "git",
              "lessThan": "5e5554389397e98fafb9efe395d8b4830dd5f042"
            },
            {
              "version": "ab7ac4eb9832e32a09f4e8042705484d2fb0aad3",
              "status": "affected",
              "versionType": "git",
              "lessThan": "479c71cda14b3c3a6515773faa39055333eaa2b7"
            },
            {
              "version": "ab7ac4eb9832e32a09f4e8042705484d2fb0aad3",
              "status": "affected",
              "versionType": "git",
              "lessThan": "33db24ad811b3576a0c2f8862506763f2be925b0"
            },
            {
              "version": "ab7ac4eb9832e32a09f4e8042705484d2fb0aad3",
              "status": "affected",
              "versionType": "git",
              "lessThan": "97275339c34cfbccd65e87bc38fd910ae66c48ba"
            },
            {
              "version": "ab7ac4eb9832e32a09f4e8042705484d2fb0aad3",
              "status": "affected",
              "versionType": "git",
              "lessThan": "16989de75497574b5fafd174c0c233d5a86858b7"
            },
            {
              "version": "ab7ac4eb9832e32a09f4e8042705484d2fb0aad3",
              "status": "affected",
              "versionType": "git",
              "lessThan": "af8085e0fc3207ecbf8b9e7a635c790e36d058c6"
            },
            {
              "version": "ab7ac4eb9832e32a09f4e8042705484d2fb0aad3",
              "status": "affected",
              "versionType": "git",
              "lessThan": "c821a88bd720b0046433173185fd841a100d44ad"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "4.6",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "4.6"
            },
            {
              "version": "4.14.326",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "4.14.*"
            },
            {
              "version": "4.19.295",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "4.19.*"
            },
            {
              "version": "5.4.257",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.4.*"
            },
            {
              "version": "5.10.195",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.10.*"
            },
            {
              "version": "5.15.132",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "version": "6.1.54",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "version": "6.5.4",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.5.*"
            },
            {
              "version": "6.6",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}