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Debian 11 DLA-4137-1: Critical libbpf Use-After-Free and Null-Pointer Fix

debian lts
Calendar Grey April 24, 2025
Dist Debian Esm H88
Two significant flaws addressed in libbpf. Users of Debian 11 are urged to upgrade for improved protection.
Two vulnerabilities have been fixed in libbpf, a library for interacting with eBPF in the Linux kernel
Topics%20covered

Topics Covered

security advisory security update debian use-after-free libbpf null-pointer dereference

Summary

CVE-2022-3534

use-after-free in btf_dump_name_dups()

CVE-2022-3606

null-pointer dereference in find_prog_by_sec_insn()

For Debian 11 bullseye, these problems have been fixed in version
0.3-2+deb11u1.

We recommend that you upgrade your libbpf packages.

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

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: libbpf
Version: 0.3-2+deb11u1
CVE ID: CVE-2022-3534 CVE-2022-3606
Debian Bug: 1023717

Topics%20covered

Topics Covered

security advisory security update debian use-after-free libbpf null-pointer dereference

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