{
  "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-2025-68263",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2025-68263",
    "idYear": 2025,
    "status": "PUBLISHED",
    "publishedAt": "2025-12-16T14:45:05.218Z",
    "updatedAt": "2026-10-15T22:02:48.374Z",
    "importedAt": "2026-10-24T01:57:44.935Z",
    "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": "ksmbd: ipc: fix use-after-free in ipc_msg_send_request",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nksmbd: ipc: fix use-after-free in ipc_msg_send_request\n\nipc_msg_send_request() waits for a generic netlink reply using an\nipc_msg_table_entry on the stack. The generic netlink handler\n(handle_generic_event()/handle_response()) fills entry->response under\nipc_msg_table_lock, but ipc_msg_send_request() used to validate and free\nentry->response without holding the same lock.\n\nUnder high concurrency this allows a race where handle_response() is\ncopying data into entry->response while ipc_msg_send_request() has just\nfreed it, leading to a slab-use-after-free reported by KASAN in\nhandle_generic_event():\n\n  BUG: KASAN: slab-use-after-free in handle_generic_event+0x3c4/0x5f0 [ksmbd]\n  Write of size 12 at addr ffff888198ee6e20 by task pool/109349\n  ...\n  Freed by task:\n    kvfree\n    ipc_msg_send_request [ksmbd]\n    ksmbd_rpc_open -> ksmbd_session_rpc_open [ksmbd]\n\nFix by:\n- Taking ipc_msg_table_lock in ipc_msg_send_request() while validating\n  entry->response, freeing it when invalid, and removing the entry from\n  ipc_msg_table.\n- Returning the final entry->response pointer to the caller only after\n  the hash entry is removed under the lock.\n- Returning NULL in the error path, preserving the original API\n  semantics.\n\nThis makes all accesses to entry->response consistent with\nhandle_response(), which already updates and fills the response buffer\nunder ipc_msg_table_lock, and closes the race that allowed the UAF.",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "0626e6641f6b467447c81dd7678a69c66f7746cf",
              "status": "affected",
              "versionType": "git",
              "lessThan": "de85fb58f9967ba024bb08e0041613d37b57b4d1"
            },
            {
              "version": "0626e6641f6b467447c81dd7678a69c66f7746cf",
              "status": "affected",
              "versionType": "git",
              "lessThan": "708a620b471a14466f1f52c90bf3f65ebdb31460"
            },
            {
              "version": "0626e6641f6b467447c81dd7678a69c66f7746cf",
              "status": "affected",
              "versionType": "git",
              "lessThan": "5ac763713a1ef8f9a8bda1dbd81f0318d67baa4e"
            },
            {
              "version": "0626e6641f6b467447c81dd7678a69c66f7746cf",
              "status": "affected",
              "versionType": "git",
              "lessThan": "759c8c30cfa8706c518e56f67971b1f0932f4b9b"
            },
            {
              "version": "0626e6641f6b467447c81dd7678a69c66f7746cf",
              "status": "affected",
              "versionType": "git",
              "lessThan": "8229c6ca50cea701e25a7ee25f48441b582ec5fa"
            },
            {
              "version": "0626e6641f6b467447c81dd7678a69c66f7746cf",
              "status": "affected",
              "versionType": "git",
              "lessThan": "1fab1fa091f5aa97265648b53ea031deedd26235"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "5.15",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "5.15"
            },
            {
              "version": "6.1.160",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "version": "6.6.120",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "version": "6.12.62",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "version": "6.17.12",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.17.*"
            },
            {
              "version": "6.18.1",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.18.*"
            },
            {
              "version": "6.19",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}