CVE-2026-46243 Affecting kernel-debug-core package, versions <0:5.14.0-687.17.1.el9_8


Severity

Recommended
high

Based on Oracle Linux security rating.

Threat Intelligence

EPSS
0.35% (28th percentile)

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  • Snyk IDSNYK-ORACLE9-KERNELDEBUGCORE-17739552
  • published30 Jun 2026
  • disclosed1 Jun 2026

Introduced: 1 Jun 2026

NewCVE-2026-46243  (opens in a new tab)

How to fix?

Upgrade Oracle:9 kernel-debug-core to version 0:5.14.0-687.17.1.el9_8 or higher.
This issue was patched in ELSA-2026-24381.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-debug-core package and not the kernel-debug-core package as distributed by Oracle. See How to fix? for Oracle:9 relevant fixed versions and status.

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

smb: client: reject userspace cifs.spnego descriptions

cifs.spnego key descriptions contain authority-bearing fields such as pid, uid, creduid, and upcall_target that cifs.upcall treats as kernel-originating inputs. However, userspace can also create keys of this type through request_key(2) or add_key(2), allowing those fields to be supplied without CIFS origin.

Only accept cifs.spnego descriptions while CIFS is using its private spnego_cred to request the key.

CVSS Base Scores

version 3.1