fs/mount_setattr: always cleanup mount_kattr (Linux Linux)

CVE-2021-46923
MEDIUM 5.5

At a glance

Source
NVD
EPSS
EPSS 0.21 % · percentile 11 ()
State
PUBLISHED
Published
Updated
Assigner
Linux
NVD status
Modified

Description

In the Linux kernel, the following vulnerability has been resolved: fs/mount_setattr: always cleanup mount_kattr Make sure that finish_mount_kattr() is called after mount_kattr was succesfully built in both the success and failure case to prevent leaking any references we took when we built it. We returned early if path lookup failed thereby risking to leak an additional reference we took when building mount_kattr when an idmapped mount was requested.

Weaknesses (CWE)

  • CWE-668 — Exposure of Resource to Wrong Sphere

References

Scores

VersionScoreVectorScored by
CVSS 3.1MEDIUM 5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:NNVD · nvd@nist.gov (Primary)

European references

CERT-FR advisories

Affected configurations (NVD CPE)

Affected products

ProductVersions
Linux · Linuxaffected 9caccd41541a6f7d6279928d9f971f6642c361af < 47b5d0a7532d39e42a938f81e3904268145c341d ; affected 9caccd41541a6f7d6279928d9f971f6642c361af < 012e332286e2bb9f6ac77d195f17e74b2963d663
Linux · Linuxaffected 5.12 ; unaffected 0 < 5.12 ; unaffected 5.15.13 ≤ 5.15.* ; unaffected 5.16 ≤ *

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