Kernel memory corruption via stale BPF packet pointer
Published May 5, 2025 · Updated Aug 5, 2026
BPF verifier bypass in Linux allows local users with BPF privileges to read, write, or corrupt kernel memory via crafted eBPF. The verifier preserved packet-pointer validity across a tail call even though the called program could run helpers that change packet data, so later accesses used a stale pointer. Loading and attaching the packet-processing program requires CAP_BPF or CAP_NET_ADMIN; exploitation can disclose or overwrite kernel heap data and cause a panic.
Summary
What happened
BPF verifier bypass in Linux allows local users with BPF privileges to read, write, or corrupt kernel memory via crafted eBPF. The verifier preserved packet-pointer validity across a tail call even though the called program could run helpers that change packet data, so later accesses used a stale pointer. Loading and attaching the packet-processing program requires CAP_BPF or CAP_NET_ADMIN; exploitation can disclose or overwrite kernel heap data and cause a panic.
The record
- CVE
- CVE-2024-58237
- Published
- May 5, 2025
- Updated
- Aug 5, 2026
- Vendor
- The Linux Kernel Organization
- Product
- Linux
- Classifications
- T1068
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- May 5, 2025CVE publishedPublication date reported by the CVE source.
- Aug 5, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
Compare your product and version with the public record. A matching version still requires validation against your environment.
Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=51c39bb1d5d105a02e29aa7960f0a395086e6342 <1a4607ffba35bf2a630aab299e34dd3f6e658d70
- Affected versionversion=51c39bb1d5d105a02e29aa7960f0a395086e6342 <1c2244437f9ad3dd91215f920401a14f2542dbfc
- Affected versionversion=51c39bb1d5d105a02e29aa7960f0a395086e6342 <f1692ee23dcaaddc24ba407b269707ee5df1301f
- Affected versionversion=5.6
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
No public exploit references are available in this record.
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
See the directory against your own environment.
Your stack
Check the software in your environment
Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.
Book a demo