Local kernel crash via scheduler multiplication overflow
Published May 20, 2024 · Updated May 23, 2026
Integer overflow in Linux 6.6.4 through 6.6.29 and 6.7 allows local users to crash the kernel through ordinary scheduling activity. reweight_eevdf() fails to clamp vlag before fixed-point scaling, so signed 64-bit multiplication can overflow and corrupt vruntime; entity_eligible() then reports no eligible entity and pick_eevdf() returns NULL. Local low-privileged execution is required, and dereferencing the NULL result causes a rare but fatal kernel crash without reported data disclosure or modification.
Summary
What happened
Integer overflow in Linux 6.6.4 through 6.6.29 and 6.7 allows local users to crash the kernel through ordinary scheduling activity. reweight_eevdf() fails to clamp vlag before fixed-point scaling, so signed 64-bit multiplication can overflow and corrupt vruntime; entity_eligible() then reports no eligible entity and pick_eevdf() returns NULL. Local low-privileged execution is required, and dereferencing the NULL result causes a rare but fatal kernel crash without reported data disclosure or modification.
The record
- CVE
- CVE-2024-35985
- Published
- May 20, 2024
- Updated
- May 23, 2026
- Vendor
- The Linux Kernel Organization
- Product
- Linux
- Classifications
- CWE-476, T1499
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- May 20, 2024CVE publishedPublication date reported by the CVE source.
- May 23, 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=14204acc09f652169baed1141c671429047b1313 <470d347b14b0ecffa9b39cf8f644fa2351db3efb
- Affected versionversion=6.6.4 <6.6.30
- Affected versionversion=6.7
- Affected versionversion=eab03c23c2a162085b13200d7942fc5a00b5ccc8 <06f27e6d7bf0abf54488259ef36bbf0e1fccb35c
- Affected versionversion=eab03c23c2a162085b13200d7942fc5a00b5ccc8 <1560d1f6eb6b398bddd80c16676776c0325fe5fe
What conditions does exploitation require?
What is affected?
Published CVSS scores
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Attacks
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Public exploit references
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Technologies
Your stack
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Your stack
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