What’s Vulnerable › Vulnerabilities

CVE-2023-0160: Possibility of deadlock in libbpf function sock_hash_delete_elem

• Severity: medium (CVSS 5.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2023-07-18 · updated 2026-06-17
• Weakness: CWE-833

Description

A deadlock flaw was found in the Linux kernel’s BPF subsystem. This flaw allows a local user to potentially crash the system.

Affected products

• Fedoraproject Fedora: 38
• Linux kernel: before 6.4 — fixed in 6.4

How to fix

Upgrade to a fixed version: Linux kernel 6.4. Check the vendor advisory for mitigations.

References

• https://access.redhat.com/security/cve/CVE-2023-0160
• https://bugzilla.redhat.com/show_bug.cgi?id=2159764
• https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=ed17aa92dc56
• https://lore.kernel.org/all/CABcoxUayum5oOqFMMqAeWuS8+EzojquSOSyDA3J_2omY=2EeAg@mail.gmail.com/
• https://access.redhat.com/security/cve/CVE-2023-0160
• https://bugzilla.redhat.com/show_bug.cgi?id=2159764
• https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=ed17aa92dc56
• https://lore.kernel.org/all/CABcoxUayum5oOqFMMqAeWuS8+EzojquSOSyDA3J_2omY=2EeAg@mail.gmail.com/

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