Kernel denial of service via nested BPF locking
Published Dec 27, 2024 · Updated May 11, 2026
Denial of service in Linux 4.13 through 6.6.65 and 6.7 through 6.12.4 allows local users to hang the kernel via BPF map operations. The BPF hash-table path calls bpf_map_fd_put_ptr() and bpf_map_free_id() while holding a raw bucket spinlock, creating an invalid lock context when map_idr_lock is acquired. A local user must be able to invoke BPF map operations; successful triggering interrupts host availability without reported data disclosure or modification.
Summary
What happened
Denial of service in Linux 4.13 through 6.6.65 and 6.7 through 6.12.4 allows local users to hang the kernel via BPF map operations. The BPF hash-table path calls bpf_map_fd_put_ptr() and bpf_map_free_id() while holding a raw bucket spinlock, creating an invalid lock context when map_idr_lock is acquired. A local user must be able to invoke BPF map operations; successful triggering interrupts host availability without reported data disclosure or modification.
The record
- CVE
- CVE-2024-56592
- Published
- Dec 27, 2024
- Updated
- May 11, 2026
- Vendor
- The Linux Kernel Organization
- Product
- Linux
- Classifications
- T1499.004
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- Dec 27, 2024CVE publishedPublication date reported by the CVE source.
- May 11, 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=4.13
- Affected versionversion=f3f1c054c288bb6e503005e6d73611151ed20e91 <10e8a2dec9ff1b81de8e892b0850924038adbc6d
- Affected versionversion=f3f1c054c288bb6e503005e6d73611151ed20e91 <a50b4aa3007e63a590d501341f304676ebc74b3b
- Affected versionversion=f3f1c054c288bb6e503005e6d73611151ed20e91 <b9e9ed90b10c82a4e9d4d70a2890f06bfcdd3b78
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