net: fix out-of-bounds access in ops_init (Linux Linux)

CVE-2024-36883
HIGH 7.8

En bref

Source
NVD
EPSS
EPSS 0.31 % · centile 24 ()
État
PUBLISHED
Publiée
Mise à jour
Attribuée par
Linux
Statut NVD
Modified

Description

In the Linux kernel, the following vulnerability has been resolved: net: fix out-of-bounds access in ops_init net_alloc_generic is called by net_alloc, which is called without any locking. It reads max_gen_ptrs, which is changed under pernet_ops_rwsem. It is read twice, first to allocate an array, then to set s.len, which is later used to limit the bounds of the array access. It is possible that the array is allocated and another thread is registering a new pernet ops, increments max_gen_ptrs, which is then used to set s.len with a larger than allocated length for the variable array. Fix it by reading max_gen_ptrs only once in net_alloc_generic. If max_gen_ptrs is later incremented, it will be caught in net_assign_generic.

Faiblesses (CWE)

Références

Scores

VersionScoreVecteurÉvalué par
CVSS 3.1HIGH 7.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HLinux
CVSS 3.1HIGH 7.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HNVD · 416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Secondary)
CVSS 3.1HIGH 7.1CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:HNVD · nvd@nist.gov (Primary)

Références européennes

Avis du CERT-FR

Configurations affectées (CPE NVD)

Produits affectés

ProduitVersions
Linux · Linuxaffected 073862ba5d249c20bd5c49fc6d904ff0e1f6a672 < 3cdc34d76c4f777579e28ad373979d36c030cfd3 ; affected 073862ba5d249c20bd5c49fc6d904ff0e1f6a672 < 7b0e64583eab8c1d896b47e5dd0bf2e7d86ec41f ; affected 073862ba5d249c20bd5c49fc6d904ff0e1f6a672 < 0c3248bc708a7797be573214065cf908ff1f54c7 ; affected 073862ba5d249c20bd5c49fc6d904ff0e1f6a672 < 9518b79bfd2fbf99fa9b7e8e36bcb1825e7ba030 ; affected 073862ba5d249c20bd5c49fc6d904ff0e1f6a672 < 2d60ff5874aefd006717ca5e22ac1e25eac29c42 ; affected 073862ba5d249c20bd5c49fc6d904ff0e1f6a672 < b6dbfd5bcc267a95a0bf1bf96af46243f96ec6cd
Linux · Linuxaffected 3.3 ; unaffected 0 < 3.3 ; unaffected 4.19.314 ≤ 4.19.* ; unaffected 5.4.276 ≤ 5.4.* ; unaffected 5.10.217 ≤ 5.10.* ; unaffected 5.15.159 ≤ 5.15.*

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