Linux · SUSE Linux Enterprise · Security advisory · July 27, 2026

SUSE-SU-2026:3256-1: Security update for 2 packages

SUSE-SU-2026:3256-1, released July 27, 2026, fixes 6 CVEs across 2 products. None of them is reported as exploited. Patch Radar priority: High.

High

CVEs closed

None rated Critical

Exploited

None reported

Highest CVSS

9.8

Base score, 0 to 10

Highest EPSS

0.0137

72nd percentile

Priority of the 6 CVEs

Patch now 0
                                Urgent 0
                                High 5
                                Routine 1

Fixed package versions

Product	Release	Fixed in
kernel-livepatch-SLE15-SP6_Update_19	sles 15.6	10-150600.2.1
kernel-livepatch-SLE15-SP7_Update_14	sles 15.7	4-150700.2.1

CVEs this fix closes

Priority	CVE	Title	CVSS	EPSS	Exploitation
High	CVE-2026-53359	kpatch-patch: A flaw was found in the Linux kernel's Kernel-based Virtual Machine (KVM) x86 shadow paging mechanism	8.8	0.0137	None reported
High	CVE-2026-23240	tls: Fix race condition in tls_sw_cancel_work_tx()	9.8	0.0056	None reported
High	CVE-2026-43038	kpatch-patch-4_18_0-553_125_1: kernel: ipv6: icmp: clear skb2->cb[] in ip6_err_gen_icmpv6_unreach()	9.8	0.0026	None reported
High	CVE-2026-46113	kernel-zfcpdump-modules-extra: kernel: KVM: x86: Fix shadow paging use-after-free due to unexpected GFN	8.8	0.0020	None reported
High	CVE-2026-53366	ipv4: account for fraggap on the paged allocation path	8.5	0.0017	None reported
Routine	CVE-2026-31738	kernel-source: vxlan: validate ND option lengths in vxlan_na_create (bsc#1264059).	5.5	0.0012	None reported

Also fixes CVE-2026-53359

OPENSUSE-SU-2026:21555-1
dtb-aarch64, kernel-64kb, kernel-azure and 10 more on opensuse-leap 16.0
SUSE-SU-2026:23237-1
kernel-default on sles 16.0
SUSE-SU-2026:23231-1
kernel-64kb, kernel-azure, kernel-default-base and 6 more on sles 16.0
SUSE-SU-2026:2799-1
kernel-livepatch-SLE15-SP7-RT_Update_17 on sles 15.7
SUSE-SU-2026:2800-1
kernel-64kb, kernel-azure, kernel-default and 7 more on sles 15.7
RHSA-2026:39082
kernel-rt, kernel-rt-core, kernel-rt-debug and 9 more on RHEL 8
RHSA-2026:39083
bpftool, kernel, kernel-abi-stablelists and 20 more on RHEL 8
ALSA-2026:39082
kernel-rt, kernel-rt-core, kernel-rt-debug and 7 more on almalinux 8

Vendor advisory

https://osv.dev/vulnerability/SUSE-SU-2026:3256-1

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/suse-su-2026-3256-1">SUSE-SU-2026:3256-1 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.