CVE-2024-44983 netfilter: flowtable: validate vlan header

2024-09-0419:54:32

Linux

www.cve.org

linux kernel

netfilter flowtable

vlan header validation

protocol field

vulnerability fix

security advisory

EPSS

Percentile

5.1%

JSON

In the Linux kernel, the following vulnerability has been resolved:

netfilter: flowtable: validate vlan header

Ensure there is sufficient room to access the protocol field of the
VLAN header, validate it once before the flowtable lookup.

=====================================================
BUG: KMSAN: uninit-value in nf_flow_offload_inet_hook+0x45a/0x5f0 net/netfilter/nf_flow_table_inet.c:32
nf_flow_offload_inet_hook+0x45a/0x5f0 net/netfilter/nf_flow_table_inet.c:32
nf_hook_entry_hookfn include/linux/netfilter.h:154 [inline]
nf_hook_slow+0xf4/0x400 net/netfilter/core.c:626
nf_hook_ingress include/linux/netfilter_netdev.h:34 [inline]
nf_ingress net/core/dev.c:5440 [inline]

CNA Affected

[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "net/netfilter/nf_flow_table_inet.c",
      "net/netfilter/nf_flow_table_ip.c"
    ],
    "versions": [
      {
        "version": "4cd91f7c290f",
        "lessThan": "c05155cc4557",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "4cd91f7c290f",
        "lessThan": "d9384ae7aec4",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "4cd91f7c290f",
        "lessThan": "0279c35d242d",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "4cd91f7c290f",
        "lessThan": "043a18bb6cf1",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "4cd91f7c290f",
        "lessThan": "6ea14ccb60c8",
        "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/nf_flow_table_inet.c",
      "net/netfilter/nf_flow_table_ip.c"
    ],
    "versions": [
      {
        "version": "5.13",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "5.13",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "5.15.166",
        "lessThanOrEqual": "5.15.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.1.107",
        "lessThanOrEqual": "6.1.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.6.48",
        "lessThanOrEqual": "6.6.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.10.7",
        "lessThanOrEqual": "6.10.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.11",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]