CVE-2025-68237
Dec. 18, 2025, 3:08 p.m.
None
No Score
Description
In the Linux kernel, the following vulnerability has been resolved:
mtdchar: fix integer overflow in read/write ioctls
The "req.start" and "req.len" variables are u64 values that come from the
user at the start of the function. We mask away the high 32 bits of
"req.len" so that's capped at U32_MAX but the "req.start" variable can go
up to U64_MAX which means that the addition can still integer overflow.
Use check_add_overflow() to fix this bug.
Product(s) Impacted
| Product | Versions |
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Weaknesses
Common security weaknesses mapped to this vulnerability.
References
Tags
Timeline
Published: Dec. 16, 2025, 2:15 p.m.
Last Modified: Dec. 18, 2025, 3:08 p.m.
Last Modified: Dec. 18, 2025, 3:08 p.m.
Status : Awaiting Analysis
CVE has been marked for Analysis. Normally once in this state the CVE will be analyzed by NVD staff within 24 hours.
More infoSource
416baaa9-dc9f-4396-8d5f-8c081fb06d67
*Disclaimer: Some vulnerabilities do not have an associated CPE. To enhance the data, we use AI to infer CPEs based on CVE details. This is an automated process and might not always be accurate.