Out-of-bounds Write Affecting kernel-modules-extra-matched package, versions <0:6.12.0-211.18.1.el10_2


Severity

Recommended
0.0
high
0
10

Based on AlmaLinux security rating.

Threat Intelligence

EPSS
0.13% (3rd percentile)

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  • Snyk IDSNYK-ALMALINUX10-KERNELMODULESEXTRAMATCHED-17250579
  • published9 Jun 2026
  • disclosed28 May 2026

Introduced: 28 May 2026

NewCVE-2026-43020  (opens in a new tab)
CWE-787  (opens in a new tab)

How to fix?

Upgrade AlmaLinux:10 kernel-modules-extra-matched to version 0:6.12.0-211.18.1.el10_2 or higher.
This issue was patched in ALSA-2026:21557.

NVD Description

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

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

Bluetooth: MGMT: validate LTK enc_size on load

Load Long Term Keys stores the user-provided enc_size and later uses it to size fixed-size stack operations when replying to LE LTK requests. An enc_size larger than the 16-byte key buffer can therefore overflow the reply stack buffer.

Reject oversized enc_size values while validating the management LTK record so invalid keys never reach the stored key state.

CVSS Base Scores

version 3.1