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openSUSE haproxy Important Buffer Overflow Null Pointer Attack 2026-2652-1

opensuse
Calendar Grey June 26, 2026
Dist Opensuse Esm H88
A security update for openSUSE fixes critical issues in haproxy due to vulnerabilities. Immediate installation advised.
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 High Availability Extension 15 SP6

zypper in -t patch SUSE-SLE-Product-HA-15-SP6-2026-2652=1

* SUSE Linux Enterprise High Availability Extension 15 SP7

zypper in -t patch SUSE-SLE-Product-HA-15-SP7-2026-2652=1

* openSUSE Leap 15.6

zypper in -t patch SUSE-2026-2652=1

Package List

* SUSE Linux Enterprise High Availability Extension 15 SP6 (aarch64 ppc64le

s390x x86_64)

* haproxy-debugsource-2.8.11+git0.01c1056a4-150600.3.15.1

* haproxy-debuginfo-2.8.11+git0.01c1056a4-150600.3.15.1

* haproxy-2.8.11+git0.01c1056a4-150600.3.15.1

* openSUSE Leap 15.6 (aarch64 i586 ppc64le s390x x86_64)

* haproxy-debugsource-2.8.11+git0.01c1056a4-150600.3.15.1

* haproxy-debuginfo-2.8.11+git0.01c1056a4-150600.3.15.1

* haproxy-2.8.11+git0.01c1056a4-150600.3.15.1

* SUSE Linux Enterprise High Availability Extension 15 SP7 (aarch64 ppc64le

s390x x86_64)

* haproxy-debugsource-2.8.11+git0.01c1056a4-150600.3.15.1

* haproxy-debuginfo-2.8.11+git0.01c1056a4-150600.3.15.1

* haproxy-2.8.11+git0.01c1056a4-150600.3.15.1

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-2026:2652-1
Release Date: 2026-06-26T12:21:07Z
Affected Products: * openSUSE Leap 15.6 * SUSE Linux Enterprise High Availability Extension 15 SP6 * SUSE Linux Enterprise High Availability Extension 15 SP7 * SUSE Linux Enterprise Server 15 SP6 * SUSE Linux Enterprise Server 15 SP7 * SUSE Linux Enterprise Server for SAP Applications 15 SP6 * SUSE Linux Enterprise Server for SAP Applications 15 SP7

Topics%20covered

Topics Covered

security advisory buffer overflow important null pointer OpenSUSE haproxy

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