Kernel memory disclosure and corruption via DMA wraparound
Published Jun 25, 2026 · Updated Jun 25, 2026
Integer overflow in the Ethos-U accelerator driver in Linux Kernel 6.19 allows local users to read or corrupt kernel memory via DMA. The dma_length() function performs signed additions and multiplications without rejecting underflow or overflow, so region_size[] can understate a command stream's DMA footprint. Exploitation requires an unprivileged local process able to open the Ethos-U acceleration device and submit crafted command streams; out-of-bounds DMA can disclose or corrupt kernel or other-process memory and crash the system.
Summary
What happened
Integer overflow in the Ethos-U accelerator driver in Linux Kernel 6.19 allows local users to read or corrupt kernel memory via DMA. The dma_length() function performs signed additions and multiplications without rejecting underflow or overflow, so region_size[] can understate a command stream's DMA footprint. Exploitation requires an unprivileged local process able to open the Ethos-U acceleration device and submit crafted command streams; out-of-bounds DMA can disclose or corrupt kernel or other-process memory and crash the system.
The record
- CVE
- CVE-2026-53171
- Published
- Jun 25, 2026
- Updated
- Jun 25, 2026
- Vendor
- The Linux Kernel Organization
- Product
- Linux Kernel
- Classifications
- T1068
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- Jun 25, 2026CVE publishedPublication date reported by the CVE source.
- Jun 25, 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=5a5e9c0228e613f0ef2a58b9782d7c0ea8f1e58b <6bb73845d1855ceaf50e397175e5979a7bdf69bc
- Affected versionversion=5a5e9c0228e613f0ef2a58b9782d7c0ea8f1e58b <ee6d9b6e51626f259c6f0e38d94f91be4fd14754
- Affected versionversion=6.19
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