CVE-2026-49413
Flaw in Linuxulator execution of setugid binaries
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
The Linuxulator determined whether a binary was set-user-ID or set-group-ID by checking the P_SUGID process flag. During execve(2), this flag is not yet set at the point where the auxiliary vector is constructed, so AT_SECURE was incorrectly set to zero for set-user-ID and set-group-ID executables. An unprivileged local user can inject a shared library via LD_PRELOAD into a set-user-ID or set-group-ID Linux binary, gaining the privileges of that binary.
| CWE | CWE-266 |
| Vendor | freebsd |
| Product | freebsd |
| Published | Jun 27, 2026 |
Stay Ahead of the Next One
Get instant alerts for freebsd freebsd
Be the first to know when new unknown vulnerabilities affecting freebsd freebsd are published — delivered to Slack, Telegram or Discord.
Get Free Alerts →
Free · No credit card · 60 sec setup
Affected Versions
FreeBSD / FreeBSD
15.0-RELEASE < p10 14.4-RELEASE < p6 14.3-RELEASE < p15
References
Credits
Minseong Kim of NSHC Red Alert Labs