PT-2025-37662 · Linux+6 · Linux Kernel+6
Published
2023-01-01
·
Updated
2026-05-26
·
CVE-2023-53221
CVSS v3.1
5.5
Medium
| Vector | AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
Name of the Vulnerable Software and Affected Versions
Linux kernel (affected versions not specified)
Description
A memory leak can occur in the Linux kernel due to a failure during the attachment of
fentry probes. When the attachment fails, the allocated bpf trampoline image remains in the system, as visible in /proc/kallsyms. This issue is reproducible using a simple bpf program attempting to attach to a function (trap init) that is freed after kernel initialization. The libbpf library may fallback to raw tracepoint, resulting in multiple leaked trampoline images.Recommendations
At the moment, there is no information about a newer version that contains a fix for this vulnerability.
Exploit
DoS
Memory Leak
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Weakness Enumeration
Related Identifiers
Affected Products
Astra Linux
Debian
Linux Kernel
Red Hat
Red Os
Suse
Libbpf