CVE-2026-97421 Affecting linux-6.12 package, versions <6.12.111-1~deb12u1


Severity

Recommended
low

Based on default assessment until relevant scores are available.

Threat Intelligence

EPSS
0.13% (3rd percentile)

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  • Snyk IDSNYK-DEBIAN12-LINUX612-20506424
  • published5 Oct 2026
  • disclosed24 Sept 2026

Introduced: 24 Sep 2026

NewCVE-2026-97421  (opens in a new tab)

How to fix?

Upgrade Debian:12 linux-6.12 to version 6.12.111-1~deb12u1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream linux-6.12 package and not the linux-6.12 package as distributed by Debian. See How to fix? for Debian:12 relevant fixed versions and status.

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

RDMA/umem: Be careful about boundary conditions in ib_umem_find_best_pgsz()

Several corner cases, especially important on 32 bits:

  • umem->iova is u64, the function argument should pass in u64 or iova will be truncated
  • Check that the length is not too large for the iova
  • Check that lengths > 4G don't overflow the GENMASK

CVSS Base Scores

version 3.1