Integer Overflow or Wraparound Affecting kernel-rt-debug-modules package, versions *


Severity

Recommended
medium

Based on CentOS security rating.

Threat Intelligence

EPSS
0.16% (5th percentile)

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  • Snyk IDSNYK-CENTOS10-KERNELRTDEBUGMODULES-20717162
  • published10 Oct 2026
  • disclosed6 Oct 2026

Introduced: 6 Oct 2026

NewCVE-2026-98242  (opens in a new tab)
CWE-190  (opens in a new tab)

How to fix?

There is no fixed version for Centos:10 kernel-rt-debug-modules.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-rt-debug-modules package and not the kernel-rt-debug-modules package as distributed by Centos. See How to fix? for Centos:10 relevant fixed versions and status.

In the Linux kernel, the following vulnerability has been resolved:

dma-buf: Fix silent overflow for phys vec to sgt

In case MMIO size is bigger than 4G and peer2peer DMA goes through host bridge, we trigger a code path that assigns the total linked IOVA (which is greater than 4G) to mapped_len.

Previously, mapped_len was declared as 32-bit unsigned int. When accumulating size_t lengths, this leads to a silent wrap-around. This truncation causes truncated lengths to be passed to functions like fill_sg_entry().

Fix this by changing mapped_len to size_t (64-bit). While at it, fix similar potential overflow issues in calc_sg_nents by using check_add_overflow() for nents and using unsigned int for the loop iterator in fill_sg_entry to match.

CVSS Base Scores

version 3.1