Description
A deadlock flaw was found in the Linux kernel’s BPF subsystem. This flaw allows a local user to potentially crash the system.
Published: 2023-07-18
Score: 4.7 Medium
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

No analysis available yet.

Remediation

Vendor Workaround

The default Red Hat Enterprise Linux kernel prevents unprivileged users from being able to use eBPF by the kernel.unprivileged_bpf_disabled sysctl. This would require a privileged user with CAP_SYS_ADMIN or root to be able to abuse this flaw reducing its attack space. For the Red Hat Enterprise Linux 7 the eBPF for unprivileged users is always disabled. For the Red Hat Enterprise Linux 8 or 9 to confirm the current state, inspect the sysctl with the command: # cat /proc/sys/kernel/unprivileged_bpf_disabled The setting of 1 would mean that unprivileged users cannot use eBPF, mitigating the flaw. A kernel update will be required to mitigate the flaw for the root or users with CAP_SYS_ADMIN capabilities. Note: A fix for this CVE may be backported as a part of one of the future BPF subsystem rebases.

Tracking

Sign in to view the affected projects.

Advisories
Source ID Title
EUVD EUVD EUVD-2023-12250 A deadlock flaw was found in the Linux kernel’s BPF subsystem. This flaw allows a local user to potentially crash the system.
History

Thu, 26 Sep 2024 20:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Subscriptions

Fedoraproject Fedora
Linux Linux Kernel
Redhat Enterprise Linux
cve-icon MITRE

Status: PUBLISHED

Assigner: redhat

Published:

Updated: 2024-09-26T19:33:49.046Z

Reserved: 2023-01-10T16:03:54.488Z

Link: CVE-2023-0160

cve-icon Vulnrichment

Updated: 2024-08-02T05:02:43.790Z

cve-icon NVD

Status : Modified

Published: 2023-07-18T17:15:11.313

Modified: 2024-11-21T07:36:39.893

Link: CVE-2023-0160

cve-icon Redhat

Severity : Low

Publid Date: 2023-03-12T00:00:00Z

Links: CVE-2023-0160 - Bugzilla

cve-icon OpenCVE Enrichment

No data.

Weaknesses