Import Source
https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-99081.json
JSON Data
https://api.osv.dev/v1/vulns/AZL-99081
Upstream
Published
2026-09-03T13:06:08Z
Modified
2026-09-04T14:17:10.852696176Z
Summary
CVE-2026-76642 affecting package util-linux 2.40.2-5
Details

util-linux versions through 2.41.5 and 2.42.2 fail to check mount helper exit status before running post-mount hooks, allowing unprivileged users to execute privileged operations on pre-existing filesystems. Attackers can exploit X-mount.idmap or X-mount.owner hooks to clone filesystems with inherited suid bits or modify target inode permissions after a helper fails, achieving privilege escalation.

References

Affected packages

Azure Linux:3 / util-linux

Package

Name
util-linux
Purl
pkg:rpm/azure-linux/util-linux

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Last affected
2.40.2-5

Database specific

source
"https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-99081.json"