CVE-2026-63997 Affecting kernel-default-devel package, versions <6.4.0-150700.53.81.1


Severity

Recommended
medium

Based on SUSE Linux Enterprise Server security rating.

Threat Intelligence

EPSS
0.17% (6th percentile)

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  • Snyk IDSNYK-SLES157-KERNELDEFAULTDEVEL-19907461
  • published18 Sept 2026
  • disclosed17 Sept 2026

Introduced: 17 Sep 2026

NewCVE-2026-63997  (opens in a new tab)

How to fix?

Upgrade SLES:15.7 kernel-default-devel to version 6.4.0-150700.53.81.1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-default-devel package and not the kernel-default-devel package as distributed by SLES. See How to fix? for SLES:15.7 relevant fixed versions and status.

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

ethtool: module: avoid leaking a netdev ref on module flash errors

module_flash_fw_schedule() is missing undo for setting the "in_progress" flag and taking the netdev reference. Delay taking these, the device can't disappear while we are holding rtnl_lock.

CVSS Base Scores

version 3.1