Local freed-memory access via GPU memory processing
Published Sep 8, 2026 · Updated Sep 8, 2026
Use-after-free in Arm Bifrost, Valhall, and 5th Gen GPU kernel drivers allows local users to access already-freed GPU memory. The drivers perform improper GPU memory processing that dereferences an allocation after freeing it; Arm has not published the affected function or operation sequence. A non-privileged local process with GPU access is required; affected Bifrost releases are r49p3 through r49p5, r51p0, and r54p1 through r54p2, while affected Valhall and 5th Gen releases are r49p3 through r49p5, r51p0 through r54p3, and r55p0.
Summary
What happened
Use-after-free in Arm Bifrost, Valhall, and 5th Gen GPU kernel drivers allows local users to access already-freed GPU memory. The drivers perform improper GPU memory processing that dereferences an allocation after freeing it; Arm has not published the affected function or operation sequence. A non-privileged local process with GPU access is required; affected Bifrost releases are r49p3 through r49p5, r51p0, and r54p1 through r54p2, while affected Valhall and 5th Gen releases are r49p3 through r49p5, r51p0 through r54p3, and r55p0.
The record
- CVE
- CVE-2026-7476
- Published
- Sep 8, 2026
- Updated
- Sep 8, 2026
- Vendor
- Arm
- Product
- Valhall GPU Kernel Driver
- Classifications
- CWE-416
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- Sep 8, 2026CVE publishedPublication date reported by the CVE source.
- Sep 8, 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=r49p3 <=r49p5
- Affected versionversion=r51p0 <=r54p3
- Affected versionversion=r55p0
What conditions does exploitation require?
What is affected?
Published CVSS scores
No CVSS assessment is available in this record.
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
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Weakness, pattern, technique
Public exploit references
No public exploit references are available in this record.
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Technologies
Your stack
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Your stack
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