ALPINE-CVE-2026-76642
- Source
- https://security.alpinelinux.org/vuln/CVE-2026-76642
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2026-76642.json
- JSON Data
- https://api.osv.dev/v1/vulns/ALPINE-CVE-2026-76642
- Upstream
- Published
- 2026-09-03T13:06:08.440Z
- Modified
- 2026-09-05T01:30:03.186126144Z
- Severity
-
- 8.5 (High) CVSS_V4 - CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X CVSS Calculator
- Summary
- [none]
- 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
Alpine:v3.22 / util-linux
Package
- Name
- util-linux
- Purl
- pkg:apk/alpine/util-linux?arch=source
Alpine:v3.23 / util-linux
Package
- Name
- util-linux
- Purl
- pkg:apk/alpine/util-linux?arch=source