CVE-2024-27016 netfilter: flowtable: validate pppoe header

2024-05-0105:29:57

Linux

www.cve.org

linux kernel

netfilter

flowtable

pppoe header

vulnerability

protocol field

helper function

AI Score

6.3

Confidence

High

EPSS

Percentile

5.1%

JSON

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

netfilter: flowtable: validate pppoe header

Ensure there is sufficient room to access the protocol field of the
PPPoe header. Validate it once before the flowtable lookup, then use a
helper function to access protocol field.

CNA Affected

[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "include/net/netfilter/nf_flow_table.h",
      "net/netfilter/nf_flow_table_inet.c",
      "net/netfilter/nf_flow_table_ip.c"
    ],
    "versions": [
      {
        "version": "72efd585f714",
        "lessThan": "d06977b9a410",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "72efd585f714",
        "lessThan": "8bf7c76a2a20",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "72efd585f714",
        "lessThan": "a2471d271042",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "72efd585f714",
        "lessThan": "cf366ee3bc1b",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "72efd585f714",
        "lessThan": "87b3593bed18",
        "status": "affected",
        "versionType": "git"
      }
    ]
  },
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "affected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "include/net/netfilter/nf_flow_table.h",
      "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": "5.15.157",
        "lessThanOrEqual": "5.15.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.1.88",
        "lessThanOrEqual": "6.1.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.6.29",
        "lessThanOrEqual": "6.6.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.8.8",
        "lessThanOrEqual": "6.8.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "6.9",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]