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CVE-2025-68237

UnknownEPSS 0.16%

Last modified

CVE-2025-68237 is a vulnerability of currently unknown severity. 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.. EPSS estimates a 0.16% chance of exploitation in the next 30 days.

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.

Metrics

EPSS Probability
0.16%

5.2th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Source: CNA advisory (CVE.org). NVD analysis pending.

VendorProductVersions
LinuxLinux>= 6420ac0af95dbcb2fd8452e2d551ab50e1bbad83, < f37efdd97fd1ec3e0d0f1eec279c8279e28f981e; >= 6420ac0af95dbcb2fd8452e2d551ab50e1bbad83, < 457376c6fbf0c69326a9bf1f72416225f681192b; >= 6420ac0af95dbcb2fd8452e2d551ab50e1bbad83, < eb9361484814fb12f3b7544b33835ea67d7a6a97; >= 6420ac0af95dbcb2fd8452e2d551ab50e1bbad83, < 37944f4f8199cd153fef74e95ca268020162f212; >= 6420ac0af95dbcb2fd8452e2d551ab50e1bbad83, < e4185bed738da755b191aa3f2e16e8b48450e1b8
LinuxLinux5.17

References

Timeline

Published
Last Modified
Status
Deferred

Frequently Asked Questions

What is CVE-2025-68237?
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.
How severe is CVE-2025-68237?
Severity scoring for CVE-2025-68237 is pending analysis. The EPSS model estimates a 0.16% probability of exploitation in the next 30 days.
How do I fix CVE-2025-68237?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST