Use After Free Affecting kernel-debug-core package, versions <0:4.18.0-553.134.1.el8_10


Severity

Recommended
high

Based on Oracle Linux security rating.

Threat Intelligence

EPSS
0.26% (18th percentile)

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  • Snyk IDSNYK-ORACLE8-KERNELDEBUGCORE-17375322
  • published18 Jun 2026
  • disclosed27 May 2026

Introduced: 27 May 2026

NewCVE-2026-46056  (opens in a new tab)
CWE-416  (opens in a new tab)

How to fix?

Upgrade Oracle:8 kernel-debug-core to version 0:4.18.0-553.134.1.el8_10 or higher.
This issue was patched in ELSA-2026-26427.

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:8 relevant fixed versions and status.

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

Bluetooth: hci_event: fix potential UAF in SSP passkey handlers

hci_conn lookup and field access must be covered by hdev lock in hci_user_passkey_notify_evt() and hci_keypress_notify_evt(), otherwise the connection can be freed concurrently.

Extend the hci_dev_lock critical section to cover all conn usage in both handlers.

Keep the existing keypress notification behavior unchanged by routing the early exits through a common unlock path.

CVSS Base Scores

version 3.1