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.
References
| Link | Resource |
|---|---|
| https://security.freebsd.org/advisories/FreeBSD-SA-26:30.linux.asc | Vendor Advisory |
Configurations
Configuration 1 (hide)
|
History
No history.
Information
Published : 2026-06-27 09:16
Updated : 2026-07-01 14:04
NVD link : CVE-2026-49413
Mitre link : CVE-2026-49413
CVE.ORG link : CVE-2026-49413
JSON object : View
Products Affected
freebsd
- freebsd
CWE
CWE-266
Incorrect Privilege Assignment
