{
  "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-2025-38732",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2025-38732",
    "idYear": 2025,
    "status": "PUBLISHED",
    "publishedAt": "2025-09-05T17:20:31.934Z",
    "updatedAt": "2026-10-15T01:07:52.848Z",
    "importedAt": "2026-10-24T01:57:34.152Z",
    "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": "netfilter: nf_reject: don't leak dst refcount for loopback packets",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: nf_reject: don't leak dst refcount for loopback packets\n\nrecent patches to add a WARN() when replacing skb dst entry found an\nold bug:\n\nWARNING: include/linux/skbuff.h:1165 skb_dst_check_unset include/linux/skbuff.h:1164 [inline]\nWARNING: include/linux/skbuff.h:1165 skb_dst_set include/linux/skbuff.h:1210 [inline]\nWARNING: include/linux/skbuff.h:1165 nf_reject_fill_skb_dst+0x2a4/0x330 net/ipv4/netfilter/nf_reject_ipv4.c:234\n[..]\nCall Trace:\n nf_send_unreach+0x17b/0x6e0 net/ipv4/netfilter/nf_reject_ipv4.c:325\n nft_reject_inet_eval+0x4bc/0x690 net/netfilter/nft_reject_inet.c:27\n expr_call_ops_eval net/netfilter/nf_tables_core.c:237 [inline]\n ..\n\nThis is because blamed commit forgot about loopback packets.\nSuch packets already have a dst_entry attached, even at PRE_ROUTING stage.\n\nInstead of checking hook just check if the skb already has a route\nattached to it.",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "f53b9b0bdc59c0823679f2e3214e0d538f5951b9",
              "status": "affected",
              "versionType": "git",
              "lessThan": "7b8b503c06274ef3c6c1a107743f1ec0d0a53ef8"
            },
            {
              "version": "f53b9b0bdc59c0823679f2e3214e0d538f5951b9",
              "status": "affected",
              "versionType": "git",
              "lessThan": "82ef97abf22790182f7d433c74960dfd61b99c33"
            },
            {
              "version": "f53b9b0bdc59c0823679f2e3214e0d538f5951b9",
              "status": "affected",
              "versionType": "git",
              "lessThan": "b7a885ba25960c91db237c3f83b4285156789bce"
            },
            {
              "version": "f53b9b0bdc59c0823679f2e3214e0d538f5951b9",
              "status": "affected",
              "versionType": "git",
              "lessThan": "a0a3ace2a57887dac1e7c9a724846040c3e31868"
            },
            {
              "version": "f53b9b0bdc59c0823679f2e3214e0d538f5951b9",
              "status": "affected",
              "versionType": "git",
              "lessThan": "51e8531371f90bee742c63775c9a568e5d6bf3c5"
            },
            {
              "version": "f53b9b0bdc59c0823679f2e3214e0d538f5951b9",
              "status": "affected",
              "versionType": "git",
              "lessThan": "b32e1590a8d22cf7d7f965e46d5576051acf8e42"
            },
            {
              "version": "f53b9b0bdc59c0823679f2e3214e0d538f5951b9",
              "status": "affected",
              "versionType": "git",
              "lessThan": "91a79b792204313153e1bdbbe5acbfc28903b3a5"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "5.9",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "5.9"
            },
            {
              "version": "5.10.241",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.10.*"
            },
            {
              "version": "5.15.190",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "version": "6.1.149",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "version": "6.6.103",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "version": "6.12.44",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "version": "6.16.4",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.16.*"
            },
            {
              "version": "6.17",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}