{
  "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-2026-68284",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2026-68284",
    "idYear": 2026,
    "status": "PUBLISHED",
    "publishedAt": "2026-08-10T12:02:16.572Z",
    "updatedAt": "2026-10-19T20:58:59.373Z",
    "importedAt": "2026-10-24T01:58:25.636Z",
    "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": "bpf, sockmap: Fix cork use-after-free in tcp_bpf_sendmsg()",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nbpf, sockmap: Fix cork use-after-free in tcp_bpf_sendmsg()\n\ntcp_bpf_sendmsg() keeps msg_tx across sk_stream_wait_memory(), which\ndrops and reacquires the socket lock.  Its error path tries to decide\nwhether msg_tx names the local temporary message by comparing it with\nthe current value of psock->cork.\n\nThis comparison is unsafe when two threads send on the same socket:\n\n  Thread A                         Thread B\n  msg_tx = psock->cork\n  sk_msg_alloc() fails\n  sk_stream_wait_memory()\n    releases the socket lock      acquires the socket lock\n                                  completes the cork\n                                  psock->cork = NULL\n                                  frees the cork\n    reacquires the socket lock\n  msg_tx != psock->cork\n  sk_msg_free(msg_tx)\n\nThe stale cork is therefore mistaken for the local temporary message\nand freed again.  KASAN reported:\n\n  BUG: KASAN: slab-use-after-free in sk_msg_free+0x49/0x50\n  Read of size 4 at addr ffff88810c908800 by task poc/90\n  Call Trace:\n   sk_msg_free+0x49/0x50\n   tcp_bpf_sendmsg+0x14f5/0x1cc0\n   __sys_sendto+0x32c/0x3a0\n   __x64_sys_sendto+0xdb/0x1b0\n  Allocated by task 89:\n   __kasan_kmalloc+0x8f/0xa0\n   tcp_bpf_sendmsg+0x16b3/0x1cc0\n  Freed by task 91:\n   __kasan_slab_free+0x43/0x70\n   kfree+0x131/0x3c0\n   tcp_bpf_sendmsg+0xec3/0x1cc0\n\nmsg_tx can only name the stack-local tmp or the shared cork. Check for\ntmp directly so a changed psock->cork cannot turn a shared message into\nan apparent local one.",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "604326b41a6fb9b4a78b6179335decee0365cd8c",
              "status": "affected",
              "versionType": "git",
              "lessThan": "0688e6fe599d2d39147ae9ece97944c6e1815ebf"
            },
            {
              "version": "604326b41a6fb9b4a78b6179335decee0365cd8c",
              "status": "affected",
              "versionType": "git",
              "lessThan": "b2bcbeabfd843d47468fa095b1bd08ddb90cf616"
            },
            {
              "version": "604326b41a6fb9b4a78b6179335decee0365cd8c",
              "status": "affected",
              "versionType": "git",
              "lessThan": "54be47e7cbb936429c3bbdfc526ea943954aaf80"
            },
            {
              "version": "604326b41a6fb9b4a78b6179335decee0365cd8c",
              "status": "affected",
              "versionType": "git",
              "lessThan": "ee762f684eefa59de34d9ed93cab08336e834f47"
            },
            {
              "version": "604326b41a6fb9b4a78b6179335decee0365cd8c",
              "status": "affected",
              "versionType": "git",
              "lessThan": "cde4d6bcd9b73073c66498f6723c7b364c4dbc18"
            },
            {
              "version": "604326b41a6fb9b4a78b6179335decee0365cd8c",
              "status": "affected",
              "versionType": "git",
              "lessThan": "786d690257ec7a0c839f8710456e444ce3f1348b"
            },
            {
              "version": "604326b41a6fb9b4a78b6179335decee0365cd8c",
              "status": "affected",
              "versionType": "git",
              "lessThan": "752b1159ed5d0c48fe169a3721b96660a9822aa1"
            },
            {
              "version": "604326b41a6fb9b4a78b6179335decee0365cd8c",
              "status": "affected",
              "versionType": "git",
              "lessThan": "2d66a033864e27ab8d5e44cb36f31d9d2413bee4"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "4.20",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "4.20"
            },
            {
              "version": "5.10.265",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.10.*"
            },
            {
              "version": "5.15.216",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "version": "6.1.183",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "version": "6.6.148",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "version": "6.12.101",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "version": "6.18.42",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.18.*"
            },
            {
              "version": "7.1.6",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "7.1.*"
            },
            {
              "version": "7.2",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}