{
  "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-2026-98947",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2026-98947",
    "idYear": 2026,
    "status": "PUBLISHED",
    "publishedAt": "2026-10-23T12:19:06.146Z",
    "updatedAt": "2026-10-23T12:19:06.146Z",
    "importedAt": "2026-10-24T01:58:41.756Z",
    "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": "vsock: Fix memory leak in vmci_transport_recv_dgram_cb()",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nvsock: Fix memory leak in vmci_transport_recv_dgram_cb()\n\nDuring the closure of a datagram socket, the vmci_transport_recv_dgram_cb()\nfunction may be called, which will add the packets\nto the socket's backlog; then, after the receive queue is cleared,\nthe __release_sock() function will move the packet back from the socket's\nbacklog to the receive queue, which will lead to a memory leak.\n\nsock_close\n  __sock_release\n    __vsock_release\n      // take ownership by user-space\n      lock_sock_nested\n      sock_set_flag(sk, SOCK_DEAD)\n      vmci_transport_release\n                                      vmci_dispatch_dgs\n                                        vmci_datagram_invoke_guest_handler\n                                          vmci_transport_recv_dgram_cb\n                                            sk_receive_skb\n                                              if (!sock_owned_by_user(sk))\n                                                  [...]\n                                         (!)  else if sk_add_backlog()\n                                                  [...]\n  (!) skb_queue_purge(&sk->sk_receive_queue)\n\n      release_sock\n        __release_sock\n          // move all packets from the backlog\n          // to the receive queue\n   (!)    sk_backlog_rcv\n            vsock_queue_rcv_skb\n            [...]\n              __sock_queue_rcv_skb\n                if (!sock_flag(sk, SOCK_DEAD))\n                  // Since the socket is \"dead\", the function will not\n                  // be called\n                  sk->sk_data_ready(sk)\n        sock_release_ownership(sk);\n        sock_put\n\nAdd a receive queue cleanup in the socket destructor to fix this.\n\nsyzkaller report:\n\nunreferenced object 0xffff8880117bfb80 (size 240):\n  comm \"irq/56-vmw_vmci\", pid 205, jiffies 4295064448 (age 73.992s)\n  hex dump (first 32 bytes):\n    78 dc 26 1e 80 88 ff ff 78 dc 26 1e 80 88 ff ff  x.&.....x.&.....\n    00 00 00 00 00 00 00 00 c0 da 26 1e 80 88 ff ff  ..........&.....\n  backtrace:\n    [<ffffffff82be8d97>] __alloc_skb+0x287/0x330 net/core/skbuff.c:505\n    [<ffffffffa114bcbd>] vmci_transport_recv_dgram_cb+0xbd/0x210 [vmw_vsock_vmci_transport]\n    [<ffffffffa05072c6>] vmci_datagram_invoke_guest_handler+0x366/0x450 [vmw_vmci]\n    [<ffffffffa050ad75>] vmci_dispatch_dgs+0x235/0x490 [vmw_vmci]\n    [<ffffffffa050b025>] vmci_interrupt+0x55/0x290 [vmw_vmci]\n    [<ffffffff8137ad2b>] irq_thread_fn+0x8b/0x1a0 kernel/irq/manage.c:1205\n    [<ffffffff8137c7ae>] irq_thread+0x28e/0x530 kernel/irq/manage.c:1314\n    [<ffffffff81253dd6>] kthread+0x2e6/0x3a0 kernel/kthread.c:376\n    [<ffffffff81004392>] ret_from_fork+0x22/0x30 arch/x86/entry/entry_64.S:295\n\nFound by InfoTeCS on behalf of Linux Verification Center\n(linuxtesting.org) with Syzkaller.",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "d021c344051af91f42c5ba9fdedc176740cbd238",
              "status": "affected",
              "versionType": "git",
              "lessThan": "0f8e2b2045355a0ee2008125e573435504b13cee"
            },
            {
              "version": "d021c344051af91f42c5ba9fdedc176740cbd238",
              "status": "affected",
              "versionType": "git",
              "lessThan": "4835dbcde5cc3ae37e0d0796052056b35fcae8bf"
            },
            {
              "version": "d021c344051af91f42c5ba9fdedc176740cbd238",
              "status": "affected",
              "versionType": "git",
              "lessThan": "9907db2b8e7ba70b442bb9dec86526a6511fac62"
            },
            {
              "version": "d021c344051af91f42c5ba9fdedc176740cbd238",
              "status": "affected",
              "versionType": "git",
              "lessThan": "7c24a4e87e219072e5e106f6791146cbf3b056b3"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "3.9",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "3.9"
            },
            {
              "version": "6.12.113",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "version": "6.18.57",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.18.*"
            },
            {
              "version": "7.2.11",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "7.2.*"
            },
            {
              "version": "7.3",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}