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Integer Overflow or Wraparound The advisory has been revoked - it doesn't affect any version of package kernel-headers  (opens in a new tab)

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EPSS
0.18% (8th percentile)

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  • Snyk IDSNYK-RHEL10-KERNELHEADERS-14444935
  • published17 Dec 2025
  • disclosed16 Dec 2025
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Introduced: 16 Dec 2025

CVE-2025-68237  (opens in a new tab)
CWE-190  (opens in a new tab)

Amendment

The Red Hat security team deemed this advisory irrelevant for RHEL:10.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-headers package and not the kernel-headers package as distributed by RHEL.

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.