MM reference leak via failed eviction allocation
Published Aug 10, 2026 · Updated Aug 10, 2026
A reference leak in Linux allows attackers to retain an MM reference when GPU SVM range eviction encounters an allocation failure. The drm_gpusvm_range_evict function obtains the memory-manager reference before calling kvmalloc_array but fails to release it when that allocation returns an error. The disclosure does not identify who can force this low-memory path or a concrete consequence beyond retaining the reference after eviction fails.
Summary
What happened
A reference leak in Linux allows attackers to retain an MM reference when GPU SVM range eviction encounters an allocation failure. The drm_gpusvm_range_evict function obtains the memory-manager reference before calling kvmalloc_array but fails to release it when that allocation returns an error. The disclosure does not identify who can force this low-memory path or a concrete consequence beyond retaining the reference after eviction fails.
The record
- CVE
- CVE-2026-68232
- Published
- Aug 10, 2026
- Updated
- Aug 10, 2026
- Vendor
- The Linux Kernel Organization
- Product
- Linux
- Classifications
- Unavailable
- Attack vector
- Unavailable
- Privileges
- Unavailable
Timeline
How it unfolded
- Aug 10, 2026CVE publishedPublication date reported by the CVE source.
- Aug 10, 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=6.15
- Affected versionversion=99624bdff8670795b678eafa6509aaad3a5c0175 <847b371debf3c8c72384ab7b9a0c4123a74cc925
- Affected versionversion=99624bdff8670795b678eafa6509aaad3a5c0175 <a2212fef8e18724e06432fce01fa257296d9f053
- Affected versionversion=99624bdff8670795b678eafa6509aaad3a5c0175 <adf0542659c783c962f4a8f2adcb3532ed54821c
What conditions does exploitation require?
What is affected?
Published CVSS scores
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Attacks
What attackers are doing with it
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Weakness, pattern, technique
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Public exploit references
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Technologies
Your stack
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Your stack
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