netlink: prevent potential spectre v1 gadgets (Linux Linux)

CVE-2023-53000
HIGH 7.8

At a glance

Source
NVD
EPSS
EPSS 0.22 % · percentile 12 ()
State
PUBLISHED
Published
Updated
Assigner
Linux
NVD status
Analyzed

Description

In the Linux kernel, the following vulnerability has been resolved: netlink: prevent potential spectre v1 gadgets Most netlink attributes are parsed and validated from __nla_validate_parse() or validate_nla() u16 type = nla_type(nla); if (type == 0 || type > maxtype) { /* error or continue */ } @type is then used as an array index and can be used as a Spectre v1 gadget. array_index_nospec() can be used to prevent leaking content of kernel memory to malicious users. This should take care of vast majority of netlink uses, but an audit is needed to take care of others where validation is not yet centralized in core netlink functions.

Weaknesses (CWE)

  • CWE-129 — Improper Validation of Array Index

References

Scores

VersionScoreVectorScored by
CVSS 3.1HIGH 7.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HNVD · nvd@nist.gov (Primary)

European references

CERT-FR advisories

Affected configurations (NVD CPE)

Affected products

ProductVersions
Linux · Linuxaffected bfa83a9e03cf8d501c6272999843470afecb32ed < 3e5082b1c66c7783fbcd79b5b178573230e528ff ; affected bfa83a9e03cf8d501c6272999843470afecb32ed < 539ca5dcbc91134bbe2c45677811c31d8b030d2d ; affected bfa83a9e03cf8d501c6272999843470afecb32ed < 41b74e95f297ac360ca7ed6bf200100717cb6c45 ; affected bfa83a9e03cf8d501c6272999843470afecb32ed < 992e4ff7116a77968039277b5d6aaa535c2f2184 ; affected bfa83a9e03cf8d501c6272999843470afecb32ed < f0950402e8c76e7dcb08563f1b4e8000fbc62455
Linux · Linuxaffected 2.6.15 ; unaffected 0 < 2.6.15 ; unaffected 5.4.231 ≤ 5.4.* ; unaffected 5.10.166 ≤ 5.10.* ; unaffected 5.15.91 ≤ 5.15.* ; unaffected 6.1.9 ≤ 6.1.*

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