RHSA-2026:42694: glibc security update

RHSA-2026:42694, released April 28, 2026, fixes 3 CVEs in glibc (version 2.39-128.el10_2). None of them is reported as exploited. Patch Radar priority: High.

High

CVEs closed

None rated Critical

Exploited

None reported

Highest CVSS

8.6

Base score, 0 to 10

Highest EPSS

0.0037

30th percentile

Priority of the 3 CVEs

Patch now 0
                                Urgent 0
                                High 2
                                Routine 1

Fixed package versions

Product	Release	Fixed in
glibc	RHEL 10	2.39-128.el10_2

CVEs this fix closes

Priority	CVE	Title	CVSS	EPSS	Exploitation
High	CVE-2026-5928	Static buffer overflow in deprecated nis_local_principal	7.5	0.0037	None reported
High	CVE-2026-5435	Potential buffer overflow in ns_sprintrrf TSIG handling path	8.6	0.0024	None reported
Routine	CVE-2026-6238	compat-libpthread-nonshared: The glibc packages provide the standard C libraries (libc), POSIX thread libraries (libpthread), standard math librar...	6.5	0.0036	None reported

Also fixes CVE-2026-5928

glibc-source 2.39-0ubuntu8.8
glibc-source on Ubuntu 24.04.5 LTS (noble)
libc-bin 2.39-0ubuntu8.8
libc-bin on Ubuntu 24.04.5 LTS (noble)
libc-dev-bin 2.39-0ubuntu8.8
libc-dev-bin on Ubuntu 24.04.5 LTS (noble)
libc-devtools 2.39-0ubuntu8.8
libc-devtools on Ubuntu 24.04.5 LTS (noble)
libc6 2.39-0ubuntu8.8
libc6 on Ubuntu 24.04.5 LTS (noble)
libc6-amd64 2.39-0ubuntu8.8
libc6-amd64 on Ubuntu 24.04.5 LTS (noble)
libc6-dev-amd64 2.39-0ubuntu8.8
libc6-dev-amd64 on Ubuntu 24.04.5 LTS (noble)
libc6-dev-i386 2.39-0ubuntu8.8
libc6-dev-i386 on Ubuntu 24.04.5 LTS (noble)

Vendor advisory

https://access.redhat.com/errata/RHSA-2026:42694

For tools and AI agents

This page as data: JSON · Markdown

Link to this page

If this page saved you time, a link to it in your ticket, advisory or write-up helps others find it.

HTML

<a href="https://patchblox.com/security/fix/linux/rhsa-2026-42694">RHSA-2026:42694 on Patchblox Patch Radar</a>

Reusing the data? How to credit Patch Radar.

Which servers are still behind?

Patchblox compares the installed package on every Linux machine against the fixed version for its release, including machines reported through Azure Update Manager.

Get a demo

Patch Radar data is free to use with attribution. Terms and how to credit it.

Product names, logos and trademarks shown on Patch Radar belong to their respective owners. They are used only to identify the software each security fix applies to and to help readers find their platform. Their use does not imply any affiliation with, or endorsement by, those owners, and Patchblox is not affiliated with any of them.