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Debian 11: DLA-4181-1 critical: glibc privilege escalation risk

debian lts
Calendar Grey May 27, 2025
Dist Debian Esm H88
Ubuntu Security Notice USN-5247-1 resolves a serious OpenSSL vulnerability that could lead to unauthorized access.
A flaw was discovered in the dynamic linking support in the GNU C Library, the C standard library implementation used by Debian
Topics%20covered

Topics Covered

security advisory security update privilege escalation Debian glibc dynamic linking

Summary

Privilege escalation may be possible in statically compiled setuid
binaries that call dlopen(), due to an untrusted LD_LIBRARY_PATH
environment variable vulnerability. This includes calls to dlopen()
internal to glibc itself, made after user calls to setlocale() or to NSS
functions such as getaddrinfo().

For Debian 11 bullseye, this problem has been fixed in version
2.31-13+deb11u13.

We recommend that you upgrade your glibc packages.

For the detailed security status of glibc please refer to
its security tracker page at:
https://security-tracker.debian.org/tracker/source-package/glibc

Further information about Debian LTS security advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://wiki.debian.org/LTS


Severity
critical
Lowest
Low
Medium
High
Critical

Package: glibc
Version: 2.31-13+deb11u13
CVE ID: CVE-2025-4802

Topics%20covered

Topics Covered

security advisory security update privilege escalation Debian glibc dynamic linking

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