CVE-2025-38591: bpf: Reject narrower access to pointer ctx fields
bpf: Reject narrower access to pointer ctx fields
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
bpf/verifier: Handle BPF_LOAD_ACQ instructions consistencyto a version that resolves this vulnerability.Patch fce7bd8e385a
Event History
Frequently Asked Questions
What is the severity of CVE-2025-38591?
CVE-2025-38591 has been rated as a moderate severity vulnerability due to potential kernel warnings caused by improper pointer access.
How do I fix CVE-2025-38591?
To fix CVE-2025-38591, update your Linux kernel to the latest stable version that includes the security patches addressing this vulnerability.
Which Linux kernel versions are affected by CVE-2025-38591?
CVE-2025-38591 affects all unspecified versions of the Linux kernel prior to the patch release.
What type of vulnerability is CVE-2025-38591?
CVE-2025-38591 is classified as a kernel vulnerability related to BPF (Berkeley Packet Filter) pointer access issues.
Is there a reliable way to test for CVE-2025-38591 in my system?
To test for CVE-2025-38591, monitor your system for kernel warnings or errors related to BPF pointer access after running potentially vulnerable code.