Undefined behavior via unchecked shift ranges
Published Oct 22, 2025 · Updated Oct 22, 2025
Shift-out-of-bounds in the Linux kernel AMD SFH HID driver allows local users to trigger undefined behavior during sensor report conversion. The float_to_int function shifts exp and shift values without first ensuring that their counts fit the destination integer range. Reachability requires compatible AMD Sensor Fusion Hub hardware and the affected driver; the upstream record demonstrates a UBSAN fault but specifies no further impact.
Summary
What happened
Shift-out-of-bounds in the Linux kernel AMD SFH HID driver allows local users to trigger undefined behavior during sensor report conversion. The float_to_int function shifts exp and shift values without first ensuring that their counts fit the destination integer range. Reachability requires compatible AMD Sensor Fusion Hub hardware and the affected driver; the upstream record demonstrates a UBSAN fault but specifies no further impact.
The record
- CVE
- CVE-2023-53703
- Published
- Oct 22, 2025
- Updated
- Oct 22, 2025
- Vendor
- The Linux Kernel Organization
- Product
- Linux
- Classifications
- Unavailable
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- Oct 22, 2025CVE publishedPublication date reported by the CVE source.
- Oct 22, 2025Record 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=6.0
- Affected versionversion=93ce5e0231d79189be4d9e5f9295807b18941419 <1e50bc2c177d4b2953d77037ac46ea0702d6aa1f
- Affected versionversion=93ce5e0231d79189be4d9e5f9295807b18941419 <5a45ed1ae34bb0e68944471f4bafb68e0a572791
- Affected versionversion=93ce5e0231d79189be4d9e5f9295807b18941419 <87854366176403438d01f368b09de3ec2234e0f5
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
No sourced classifications are available.
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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