net: dsa: fix a crash if ->get_sset_count() fails (Linux Linux)

CVE-2021-47159
HIGH 7.8

En bref

Source
NVD
EPSS
EPSS 0.25 % · centile 16 ()
État
PUBLISHED
Publiée
Mise à jour
Attribuée par
Linux
Statut NVD
Modified

Description

In the Linux kernel, the following vulnerability has been resolved: net: dsa: fix a crash if ->get_sset_count() fails If ds->ops->get_sset_count() fails then it "count" is a negative error code such as -EOPNOTSUPP. Because "i" is an unsigned int, the negative error code is type promoted to a very high value and the loop will corrupt memory until the system crashes. Fix this by checking for error codes and changing the type of "i" to just int.

Faiblesses (CWE)

  • CWE-835 — Boucle dont la condition de sortie est inatteignable (boucle infinie)

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 3.1MEDIUM 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 badf3ada60ab8f76f9488dc8f5c0c57f70682f5a < 0f2cb08c57edefb0e7b5045e0e3e9980a3d3aa37 ; affected badf3ada60ab8f76f9488dc8f5c0c57f70682f5a < ce5355f140a7987011388c7e30c4f8fbe180d3e8 ; affected badf3ada60ab8f76f9488dc8f5c0c57f70682f5a < caff86f85512b8e0d9830e8b8b0dfe13c68ce5b6 ; affected badf3ada60ab8f76f9488dc8f5c0c57f70682f5a < 7b22466648a4f8e3e94f57ca428d1531866d1373 ; affected badf3ada60ab8f76f9488dc8f5c0c57f70682f5a < a269333fa5c0c8e53c92b5a28a6076a28cde3e83
Linux · Linuxaffected 4.7 ; unaffected 0 < 4.7 ; unaffected 4.19.193 ≤ 4.19.* ; unaffected 5.4.124 ≤ 5.4.* ; unaffected 5.10.42 ≤ 5.10.* ; unaffected 5.12.9 ≤ 5.12.*

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