Kernel crash via unhandled BPF signed division
Published Oct 21, 2024 · Updated May 11, 2026
Denial of service in the Linux kernel allows local users to crash x86_64 systems through crafted BPF signed division or modulo operations. The x86_64 BPF JIT emits native signed arithmetic for INT_MIN or LLONG_MIN with a divisor of -1 without guarding the CPU overflow exception. Low-privileged local code must be able to load and run a crafted BPF program; successful exploitation raises a kernel divide exception and crashes the host.
Summary
What happened
Denial of service in the Linux kernel allows local users to crash x86_64 systems through crafted BPF signed division or modulo operations. The x86_64 BPF JIT emits native signed arithmetic for INT_MIN or LLONG_MIN with a divisor of -1 without guarding the CPU overflow exception. Low-privileged local code must be able to load and run a crafted BPF program; successful exploitation raises a kernel divide exception and crashes the host.
The record
- CVE
- CVE-2024-49888
- Published
- Oct 21, 2024
- Updated
- May 11, 2026
- Vendor
- The Linux Kernel Organization
- Product
- Linux
- Classifications
- T1499.004
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- Oct 21, 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
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=6.6
- Affected versionversion=ec0e2da95f72d4a46050a4d994e4fe471474fd80 <4902a6a0dc593c82055fc8c9ada371bafe26c9cc
- Affected versionversion=ec0e2da95f72d4a46050a4d994e4fe471474fd80 <7dd34d7b7dcf9309fc6224caf4dd5b35bedddcb7
- Affected versionversion=ec0e2da95f72d4a46050a4d994e4fe471474fd80 <d22e45a369afc7c28f11acfa5b5e8e478227ca5d
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
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Weakness, pattern, technique
Public exploit references
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Technologies
Your stack
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Your stack
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