{
  "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-2023-53468",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2023-53468",
    "idYear": 2023,
    "status": "PUBLISHED",
    "publishedAt": "2025-10-01T11:42:38.673Z",
    "updatedAt": "2026-05-11T19:45:35.279Z",
    "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": "ubifs: Fix memory leak in alloc_wbufs()",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nubifs: Fix memory leak in alloc_wbufs()\n\nkmemleak reported a sequence of memory leaks, and show them as following:\n\n  unreferenced object 0xffff8881575f8400 (size 1024):\n    comm \"mount\", pid 19625, jiffies 4297119604 (age 20.383s)\n    hex dump (first 32 bytes):\n      00 00 00 00 00 00 00 00 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      [<ffffffff8176cecd>] __kmalloc+0x4d/0x150\n      [<ffffffffa0406b2b>] ubifs_mount+0x307b/0x7170 [ubifs]\n      [<ffffffff819fa8fd>] legacy_get_tree+0xed/0x1d0\n      [<ffffffff81936f2d>] vfs_get_tree+0x7d/0x230\n      [<ffffffff819b2bd4>] path_mount+0xdd4/0x17b0\n      [<ffffffff819b37aa>] __x64_sys_mount+0x1fa/0x270\n      [<ffffffff83c14295>] do_syscall_64+0x35/0x80\n      [<ffffffff83e0006a>] entry_SYSCALL_64_after_hwframe+0x46/0xb0\n\n  unreferenced object 0xffff8881798a6e00 (size 512):\n    comm \"mount\", pid 19677, jiffies 4297121912 (age 37.816s)\n    hex dump (first 32 bytes):\n      6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b  kkkkkkkkkkkkkkkk\n      6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b  kkkkkkkkkkkkkkkk\n    backtrace:\n      [<ffffffff8176cecd>] __kmalloc+0x4d/0x150\n      [<ffffffffa0418342>] ubifs_wbuf_init+0x52/0x480 [ubifs]\n      [<ffffffffa0406ca5>] ubifs_mount+0x31f5/0x7170 [ubifs]\n      [<ffffffff819fa8fd>] legacy_get_tree+0xed/0x1d0\n      [<ffffffff81936f2d>] vfs_get_tree+0x7d/0x230\n      [<ffffffff819b2bd4>] path_mount+0xdd4/0x17b0\n      [<ffffffff819b37aa>] __x64_sys_mount+0x1fa/0x270\n      [<ffffffff83c14295>] do_syscall_64+0x35/0x80\n      [<ffffffff83e0006a>] entry_SYSCALL_64_after_hwframe+0x46/0xb0\n\nThe problem is that the ubifs_wbuf_init() returns an error in the\nloop which in the alloc_wbufs(), then the wbuf->buf and wbuf->inodes\nthat were successfully alloced before are not freed.\n\nFix it by adding error hanging path in alloc_wbufs() which frees\nthe memory alloced before when ubifs_wbuf_init() returns an error.",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "1e51764a3c2ac05a23a22b2a95ddee4d9bffb16d",
              "status": "affected",
              "versionType": "git",
              "lessThan": "1f206002c6bc302bface871ef3f72c0bbcaa931c"
            },
            {
              "version": "1e51764a3c2ac05a23a22b2a95ddee4d9bffb16d",
              "status": "affected",
              "versionType": "git",
              "lessThan": "bf50229494f0443b3f08427d7df63e5a7e2a796a"
            },
            {
              "version": "1e51764a3c2ac05a23a22b2a95ddee4d9bffb16d",
              "status": "affected",
              "versionType": "git",
              "lessThan": "3e29634eb56e6547272fe4e568f63421f8b3b9fa"
            },
            {
              "version": "1e51764a3c2ac05a23a22b2a95ddee4d9bffb16d",
              "status": "affected",
              "versionType": "git",
              "lessThan": "26ec45f1c504e15268383019df139d7983f1e67f"
            },
            {
              "version": "1e51764a3c2ac05a23a22b2a95ddee4d9bffb16d",
              "status": "affected",
              "versionType": "git",
              "lessThan": "e11f36d3bc4d23f620754a948fe7b82b63dcb185"
            },
            {
              "version": "1e51764a3c2ac05a23a22b2a95ddee4d9bffb16d",
              "status": "affected",
              "versionType": "git",
              "lessThan": "4a1ff3c5d04b9079b4f768d9a71b51c4af578dd2"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "2.6.27",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "2.6.27"
            },
            {
              "version": "5.4.235",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.4.*"
            },
            {
              "version": "5.10.173",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.10.*"
            },
            {
              "version": "5.15.100",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "version": "6.1.18",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "version": "6.2.5",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.2.*"
            },
            {
              "version": "6.3",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}