Kernel panic via premature CE3 DMA unmapping
Published Dec 24, 2025 · Updated Dec 24, 2025
DMA race in Linux kernel before 6.0.16 or 6.1.2 allows physically proximate attackers to trigger a kernel panic via Wi-Fi churn. On WCN3990 CE3, the ath10k host driver unmaps and frees a WMI command DMA buffer immediately after a completion interrupt although hardware can still be reading it. Deauthentication, disassociation, or malicious-access-point association churn reaches the path without credentials, but exploitation depends on a rare DMA timing race and interrupts the host through an SMMU fault and kernel panic.
Summary
What happened
DMA race in Linux kernel before 6.0.16 or 6.1.2 allows physically proximate attackers to trigger a kernel panic via Wi-Fi churn. On WCN3990 CE3, the ath10k host driver unmaps and frees a WMI command DMA buffer immediately after a completion interrupt although hardware can still be reading it. Deauthentication, disassociation, or malicious-access-point association churn reaches the path without credentials, but exploitation depends on a rare DMA timing race and interrupts the host through an SMMU fault and kernel panic.
The record
- CVE
- CVE-2022-50700
- Published
- Dec 24, 2025
- Updated
- Dec 24, 2025
- Vendor
- The Linux Kernel Organization
- Product
- Linux
- Classifications
- T1499
- Attack vector
- adjacent
- Privileges
- unauthenticated
Timeline
How it unfolded
- Dec 24, 2025CVE publishedPublication date reported by the CVE source.
- Dec 24, 2025Record 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=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <79a124b588aadb5a22695542778de14366ff3219
- Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <acd4324e5f1f11351630234297f95076f0ac9a2f
- Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <c4bedc3cda09d896c92adcdb6b62aa93b0c47a8a
What conditions does exploitation require?
What is affected?
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