{
   "containers": {
      "cna": {
         "providerMetadata": {
            "orgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038"
         },
         "descriptions": [
            {
               "lang": "en",
               "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: xtables: avoid NFPROTO_UNSPEC where needed\n\nsyzbot managed to call xt_cluster match via ebtables:\n\n WARNING: CPU: 0 PID: 11 at net/netfilter/xt_cluster.c:72 xt_cluster_mt+0x196/0x780\n [..]\n ebt_do_table+0x174b/0x2a40\n\nModule registers to NFPROTO_UNSPEC, but it assumes ipv4/ipv6 packet\nprocessing.  As this is only useful to restrict locally terminating\nTCP/UDP traffic, register this for ipv4 and ipv6 family only.\n\nPablo points out that this is a general issue, direct users of the\nset/getsockopt interface can call into targets/matches that were only\nintended for use with ip(6)tables.\n\nCheck all UNSPEC matches and targets for similar issues:\n\n- matches and targets are fine except if they assume skb_network_header()\n  is valid -- this is only true when called from inet layer: ip(6) stack\n  pulls the ip/ipv6 header into linear data area.\n- targets that return XT_CONTINUE or other xtables verdicts must be\n  restricted too, they are incompatbile with the ebtables traverser, e.g.\n  EBT_CONTINUE is a completely different value than XT_CONTINUE.\n\nMost matches/targets are changed to register for NFPROTO_IPV4/IPV6, as\nthey are provided for use by ip(6)tables.\n\nThe MARK target is also used by arptables, so register for NFPROTO_ARP too.\n\nWhile at it, bail out if connbytes fails to enable the corresponding\nconntrack family.\n\nThis change passes the selftests in iptables.git."
            }
         ],
         "affected": [
            {
               "product": "Linux",
               "vendor": "Linux",
               "defaultStatus": "unaffected",
               "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
               "programFiles": [
                  "net/netfilter/xt_CHECKSUM.c",
                  "net/netfilter/xt_CLASSIFY.c",
                  "net/netfilter/xt_CONNSECMARK.c",
                  "net/netfilter/xt_CT.c",
                  "net/netfilter/xt_IDLETIMER.c",
                  "net/netfilter/xt_LED.c",
                  "net/netfilter/xt_NFLOG.c",
                  "net/netfilter/xt_RATEEST.c",
                  "net/netfilter/xt_SECMARK.c",
                  "net/netfilter/xt_TRACE.c",
                  "net/netfilter/xt_addrtype.c",
                  "net/netfilter/xt_cluster.c",
                  "net/netfilter/xt_connbytes.c",
                  "net/netfilter/xt_connlimit.c",
                  "net/netfilter/xt_connmark.c",
                  "net/netfilter/xt_mark.c"
               ],
               "versions": [
                  {
                     "version": "0269ea493734",
                     "lessThan": "85ff9a0f793c",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "0269ea493734",
                     "lessThan": "8f482bb7e27b",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "0269ea493734",
                     "lessThan": "997f67d813ce",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "0269ea493734",
                     "lessThan": "4cdc55ec6222",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "0269ea493734",
                     "lessThan": "0bfcb7b71e73",
                     "status": "affected",
                     "versionType": "git"
                  }
               ]
            },
            {
               "product": "Linux",
               "vendor": "Linux",
               "defaultStatus": "affected",
               "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
               "programFiles": [
                  "net/netfilter/xt_CHECKSUM.c",
                  "net/netfilter/xt_CLASSIFY.c",
                  "net/netfilter/xt_CONNSECMARK.c",
                  "net/netfilter/xt_CT.c",
                  "net/netfilter/xt_IDLETIMER.c",
                  "net/netfilter/xt_LED.c",
                  "net/netfilter/xt_NFLOG.c",
                  "net/netfilter/xt_RATEEST.c",
                  "net/netfilter/xt_SECMARK.c",
                  "net/netfilter/xt_TRACE.c",
                  "net/netfilter/xt_addrtype.c",
                  "net/netfilter/xt_cluster.c",
                  "net/netfilter/xt_connbytes.c",
                  "net/netfilter/xt_connlimit.c",
                  "net/netfilter/xt_connmark.c",
                  "net/netfilter/xt_mark.c"
               ],
               "versions": [
                  {
                     "version": "2.6.30",
                     "status": "affected"
                  },
                  {
                     "version": "0",
                     "lessThan": "2.6.30",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "5.15.168",
                     "lessThanOrEqual": "5.15.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "6.1.113",
                     "lessThanOrEqual": "6.1.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "6.6.57",
                     "lessThanOrEqual": "6.6.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "6.11.4",
                     "lessThanOrEqual": "6.11.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "6.12-rc3",
                     "lessThanOrEqual": "*",
                     "status": "unaffected",
                     "versionType": "original_commit_for_fix"
                  }
               ]
            }
         ],
         "references": [
            {
               "url": "https://git.kernel.org/stable/c/85ff9a0f793ca52c527e75cd40a69c948627ebde"
            },
            {
               "url": "https://git.kernel.org/stable/c/8f482bb7e27b37f1f734bb9a8eeb28b23d59d189"
            },
            {
               "url": "https://git.kernel.org/stable/c/997f67d813ce0cf5eb3cdb8f124da68141e91b6c"
            },
            {
               "url": "https://git.kernel.org/stable/c/4cdc55ec6222bb195995cc58f7cb46e4d8907056"
            },
            {
               "url": "https://git.kernel.org/stable/c/0bfcb7b71e735560077a42847f69597ec7dcc326"
            }
         ],
         "title": "netfilter: xtables: avoid NFPROTO_UNSPEC where needed",
         "x_generator": {
            "engine": "bippy-c9c4e1df01b2"
         }
      }
   },
   "cveMetadata": {
      "assignerOrgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038",
      "cveID": "CVE-2024-50038",
      "requesterUserId": "gregkh@kernel.org",
      "serial": "1",
      "state": "PUBLISHED"
   },
   "dataType": "CVE_RECORD",
   "dataVersion": "5.0"
}