CVE-2024-27017 netfilter: nft_set_pipapo: walk over current view on netlink dump

2024-05-0105:30:01

Linux

github.com

linux kernel

netfilter

nft_set_pipapo

netlink dump

generation mask

datastructure

patch

florian westphal

6.7 Medium

AI Score

Confidence

Low

0.0004 Low

EPSS

Percentile

9.1%

JSON

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

netfilter: nft_set_pipapo: walk over current view on netlink dump

The generation mask can be updated while netlink dump is in progress.
The pipapo set backend walk iterator cannot rely on it to infer what
view of the datastructure is to be used. Add notation to specify if user
wants to read/update the set.

Based on patch from Florian Westphal.

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_tables.h",
      "net/netfilter/nf_tables_api.c",
      "net/netfilter/nft_set_pipapo.c"
    ],
    "versions": [
      {
        "version": "2b84e215f874",
        "lessThan": "721715655c72",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "2b84e215f874",
        "lessThan": "29b359cf6d95",
        "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_tables.h",
      "net/netfilter/nf_tables_api.c",
      "net/netfilter/nft_set_pipapo.c"
    ],
    "versions": [
      {
        "version": "6.4",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "6.4",
        "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"
      }
    ]
  }
]