netfilter: nf_set_pipapo: fix initial map fill (Linux Linux)

CVE-2024-57947
CRITICAL 9.8

En bref

Source
NVD
EPSS
EPSS 0.44 % · centile 38 ()
État
PUBLISHED
Publiée
Mise à jour
Attribuée par
Linux
Statut NVD
Modified

Description

In the Linux kernel, the following vulnerability has been resolved: netfilter: nf_set_pipapo: fix initial map fill The initial buffer has to be inited to all-ones, but it must restrict it to the size of the first field, not the total field size. After each round in the map search step, the result and the fill map are swapped, so if we have a set where f->bsize of the first element is smaller than m->bsize_max, those one-bits are leaked into future rounds result map. This makes pipapo find an incorrect matching results for sets where first field size is not the largest. Followup patch adds a test case to nft_concat_range.sh selftest script. Thanks to Stefano Brivio for pointing out that we need to zero out the remainder explicitly, only correcting memset() argument isn't enough.

Faiblesses (CWE)

  • CWE-401 — Mémoire non libérée après sa durée de vie utile

Références

Scores

VersionScoreVecteurÉvalué par
CVSS 3.1CRITICAL 9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HLinux
CVSS 3.1CRITICAL 9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HNVD · 416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Secondary)
CVSS 3.1MEDIUM 5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HNVD · nvd@nist.gov (Primary)

Références européennes

Avis du CERT-FR

Configurations affectées (CPE NVD)

Produits affectés

ProduitVersions
Linux · Linuxaffected 3c4287f62044a90e73a561aa05fc46e62da173da < 77bf0c4ab928ca4c9a99311f4f70ba0c17fecba9 ; affected 3c4287f62044a90e73a561aa05fc46e62da173da < 957a4d1c4c5849e4515c9fb4db21bf85318103dc ; affected 3c4287f62044a90e73a561aa05fc46e62da173da < 9625c46ce6fd4f922595a4b32b1de5066d70464f ; affected 3c4287f62044a90e73a561aa05fc46e62da173da < 69b6a67f7052905e928d75a0c5871de50e686986 ; affected 3c4287f62044a90e73a561aa05fc46e62da173da < 8058c88ac0df21239daee54b5934d5c80ca9685f ; affected 3c4287f62044a90e73a561aa05fc46e62da173da < 791a615b7ad2258c560f91852be54b0480837c93
Linux · Linuxaffected 5.6 ; unaffected 0 < 5.6 ; unaffected 5.10.247 ≤ 5.10.* ; unaffected 5.15.165 ≤ 5.15.* ; unaffected 6.1.103 ≤ 6.1.* ; unaffected 6.6.44 ≤ 6.6.*

Sources

SourceLicence
CVE List (CVEProject cvelistV5)CVE Program Terms of Use
EPSS (FIRST.org)FIRST — attribution requested
ENISA EUVDENISA — reproduction authorised, source acknowledged
CERT-FR (ANSSI)Licence Ouverte / Etalab 2.0
NVD (NIST) via fkie-cad/nvd-json-data-feedsPublic domain — this product uses data from the NVD API but is not endorsed or certified by the NVD