{
  "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-2026-23304",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2026-23304",
    "idYear": 2026,
    "status": "PUBLISHED",
    "publishedAt": "2026-03-25T10:26:59.015Z",
    "updatedAt": "2026-10-15T01:13:54.349Z",
    "importedAt": "2026-10-24T01:58:02.025Z",
    "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": "ipv6: fix NULL pointer deref in ip6_rt_get_dev_rcu()",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nipv6: fix NULL pointer deref in ip6_rt_get_dev_rcu()\n\nl3mdev_master_dev_rcu() can return NULL when the slave device is being\nun-slaved from a VRF. All other callers deal with this, but we lost\nthe fallback to loopback in ip6_rt_pcpu_alloc() -> ip6_rt_get_dev_rcu()\nwith commit 4832c30d5458 (\"net: ipv6: put host and anycast routes on\ndevice with address\").\n\n  KASAN: null-ptr-deref in range [0x0000000000000108-0x000000000000010f]\n  RIP: 0010:ip6_rt_pcpu_alloc (net/ipv6/route.c:1418)\n  Call Trace:\n   ip6_pol_route (net/ipv6/route.c:2318)\n   fib6_rule_lookup (net/ipv6/fib6_rules.c:115)\n   ip6_route_output_flags (net/ipv6/route.c:2607)\n   vrf_process_v6_outbound (drivers/net/vrf.c:437)\n\nI was tempted to rework the un-slaving code to clear the flag first\nand insert synchronize_rcu() before we remove the upper. But looks like\nthe explicit fallback to loopback_dev is an established pattern.\nAnd I guess avoiding the synchronize_rcu() is nice, too.",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "4832c30d5458387ff2533ff66fbde26ad8bb5a2d",
              "status": "affected",
              "versionType": "git",
              "lessThan": "d542e2ac7f9e288d49735be0775611547ca4e0ee"
            },
            {
              "version": "4832c30d5458387ff2533ff66fbde26ad8bb5a2d",
              "status": "affected",
              "versionType": "git",
              "lessThan": "a73fe9f4ae84a239d5b2686f47a58c158aee2eb4"
            },
            {
              "version": "4832c30d5458387ff2533ff66fbde26ad8bb5a2d",
              "status": "affected",
              "versionType": "git",
              "lessThan": "4a48fe59f29f673a3d042d679f26629a9c3e29d4"
            },
            {
              "version": "4832c30d5458387ff2533ff66fbde26ad8bb5a2d",
              "status": "affected",
              "versionType": "git",
              "lessThan": "581800298313c9fd75e94985e6d37d21b7e35d34"
            },
            {
              "version": "4832c30d5458387ff2533ff66fbde26ad8bb5a2d",
              "status": "affected",
              "versionType": "git",
              "lessThan": "3310fc11fc47387d1dd4759b0bc961643ea11c7f"
            },
            {
              "version": "4832c30d5458387ff2533ff66fbde26ad8bb5a2d",
              "status": "affected",
              "versionType": "git",
              "lessThan": "0b5a7826020706057cc5a9d9009e667027f221ee"
            },
            {
              "version": "4832c30d5458387ff2533ff66fbde26ad8bb5a2d",
              "status": "affected",
              "versionType": "git",
              "lessThan": "ae88c8256547b63980770a9ea7be73a15900d27e"
            },
            {
              "version": "4832c30d5458387ff2533ff66fbde26ad8bb5a2d",
              "status": "affected",
              "versionType": "git",
              "lessThan": "2ffb4f5c2ccb2fa1c049dd11899aee7967deef5a"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "4.14",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "4.14"
            },
            {
              "version": "5.10.253",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.10.*"
            },
            {
              "version": "5.15.203",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "version": "6.1.167",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "version": "6.6.130",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "version": "6.12.77",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "version": "6.18.17",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.18.*"
            },
            {
              "version": "6.19.7",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.19.*"
            },
            {
              "version": "7.0",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}