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openSUSE haproxy Important Buffer Misparse Null Pointer 2026-2651-1

opensuse
Calendar Grey June 26, 2026
Dist Opensuse Esm H88
# Security update for haproxy Announcement ID: SUSE-SU-2026:2651-1 Release Date: 2026-06-26T12:18:44
An update that solves two vulnerabilities can now be installed.

Description

This update for haproxy fixes the following issues

* CVE-2026-55203: integer overflow vulnerability in the fcgi_conn structure's

drl field that allows buffer misparse as new FCGI record headers

(bsc#1268557).

* CVE-2026-55204: null pointer dereference vulnerability in hpack_dht_insert()

within src/hpack-tbl.c (bsc#1268558).

Topics%20covered

Topics Covered

security advisory buffer overflow important null pointer OpenSUSE haproxy

Patch

## Patch Instructions:

To install this SUSE update use the SUSE recommended installation methods like

YaST online_update or "zypper patch".

Alternatively you can run the command listed for your product:

* SUSE Linux Enterprise Micro 5.5

zypper in -t patch SUSE-SLE-Micro-5.5-2026-2651=1

* SUSE Linux Enterprise Micro for Rancher 5.3

zypper in -t patch SUSE-SLE-Micro-5.3-2026-2651=1

* SUSE Linux Enterprise Micro 5.3

zypper in -t patch SUSE-SLE-Micro-5.3-2026-2651=1

* SUSE Linux Enterprise High Availability Extension 15 SP5

zypper in -t patch SUSE-SLE-Product-HA-15-SP5-2026-2651=1

* SUSE Linux Enterprise High Availability Extension 15 SP4

zypper in -t patch SUSE-SLE-Product-HA-15-SP4-2026-2651=1

* SUSE Linux Enterprise Micro for Rancher 5.4

zypper in -t patch SUSE-SLE-Micro-5.4-2026-2651=1

* SUSE Linux Enterprise Micro 5.4

zypper in -t patch SUSE-SLE-Micro-5.4-2026-2651=1

* openSUSE Leap 15.4

zypper in -t patch SUSE-2026-2651=1

Package List

* SUSE Linux Enterprise High Availability Extension 15 SP4 (aarch64 ppc64le

s390x x86_64)

* haproxy-2.4.22+git0.f8e3218e2-150400.3.28.1

* haproxy-debuginfo-2.4.22+git0.f8e3218e2-150400.3.28.1

* haproxy-debugsource-2.4.22+git0.f8e3218e2-150400.3.28.1

* openSUSE Leap 15.4 (aarch64 i586 ppc64le s390x x86_64)

* haproxy-2.4.22+git0.f8e3218e2-150400.3.28.1

* haproxy-debuginfo-2.4.22+git0.f8e3218e2-150400.3.28.1

* haproxy-debugsource-2.4.22+git0.f8e3218e2-150400.3.28.1

* SUSE Linux Enterprise Micro for Rancher 5.3 (aarch64 s390x x86_64)

* haproxy-2.4.22+git0.f8e3218e2-150400.3.28.1

* haproxy-debuginfo-2.4.22+git0.f8e3218e2-150400.3.28.1

* haproxy-debugsource-2.4.22+git0.f8e3218e2-150400.3.28.1

* SUSE Linux Enterprise Micro 5.3 (aarch64 s390x x86_64)

* haproxy-2.4.22+git0.f8e3218e2-150400.3.28.1

* haproxy-debuginfo-2.4.22+git0.f8e3218e2-150400.3.28.1

* haproxy-debugsource-2.4.22+git0.f8e3218e2-150400.3.28.1

* SUSE Linux Enterprise High Availability Extension 15 SP5 (aarch64 ppc64le

s390x x86_64)

*...

Read the Full Advisory

References

* bsc#1268557

* bsc#1268558

## References:

* https://www.suse.com/security/cve/CVE-2026-55203.html

* https://www.suse.com/security/cve/CVE-2026-55204.html

* https://bugzilla.suse.com/show_bug.cgi?id=1268557

* https://bugzilla.suse.com/show_bug.cgi?id=1268558

Severity
important
Lowest
Low
Medium
High
Critical

Announcement ID: SUSE-SU-2026:2651-1
Release Date: 2026-06-26T12:18:44Z
Affected Products: * openSUSE Leap 15.4 * SUSE Linux Enterprise High Availability Extension 15 SP4 * SUSE Linux Enterprise High Availability Extension 15 SP5 * SUSE Linux Enterprise High Performance Computing 15 SP4 * SUSE Linux Enterprise High Performance Computing 15 SP5 * SUSE Linux Enterprise Micro 5.3 * SUSE Linux Enterprise Micro 5.4 * SUSE Linux Enterprise Micro 5.5 * SUSE Linux Enterprise Micro for Rancher 5.3 * SUSE Linux Enterprise Micro for Rancher 5.4 * SUSE Linux Enterprise Server 15 SP4 * SUSE Linux Enterprise Server 15 SP5 * SUSE Linux Enterprise Server for SAP Applications 15 SP4 * SUSE Linux Enterprise Server for SAP Applications 15 SP5 * SUSE Manager Proxy 4.3 * SUSE Manager Retail Branch Server 4.3 * SUSE Manager Server 4.3

Topics%20covered

Topics Covered

security advisory buffer overflow important null pointer OpenSUSE haproxy

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