SUSE-SU-2026:4308-1: important: Security update for apptainer
SLE-SECURITY-UPDATES
null at suse.de
Wed Sep 23 20:34:49 UTC 2026
# Security update for apptainer
Announcement ID: SUSE-SU-2026:4308-1
Release Date: 2026-09-23T13:18:26Z
Rating: important
References:
* bsc#1278666
* bsc#1279033
* bsc#1279236
* bsc#1279333
Cross-References:
* CVE-2026-56854
* CVE-2026-56855
* CVE-2026-78662
* CVE-2026-84303
* CVE-2026-84304
* CVE-2026-84445
CVSS scores:
* CVE-2026-56854 ( SUSE ): 8.6
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
* CVE-2026-56854 ( SUSE ): 8.1 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
* CVE-2026-56854 ( NVD ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
* CVE-2026-56855 ( SUSE ): 8.7
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
* CVE-2026-56855 ( SUSE ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
* CVE-2026-56855 ( NVD ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
* CVE-2026-78662 ( SUSE ): 8.7
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
* CVE-2026-78662 ( SUSE ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
* CVE-2026-78662 ( NVD ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
* CVE-2026-84303 ( SUSE ): 9.1
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
* CVE-2026-84303 ( SUSE ): 9.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
* CVE-2026-84303 ( NVD ): 6.3
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
* CVE-2026-84304 ( SUSE ): 8.7
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
* CVE-2026-84304 ( SUSE ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
* CVE-2026-84304 ( NVD ): 8.7
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
* CVE-2026-84445 ( SUSE ): 8.7
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
* CVE-2026-84445 ( SUSE ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
* CVE-2026-84445 ( NVD ): 8.7
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Affected Products:
* HPC Module 15-SP7
* openSUSE Leap 15.6
* SUSE Linux Enterprise Desktop 15 SP7
* SUSE Linux Enterprise Real Time 15 SP7
* SUSE Linux Enterprise Server 15 SP6
* SUSE Linux Enterprise Server 15 SP6 LTSS
* SUSE Linux Enterprise Server 15 SP7
* SUSE Linux Enterprise Server for SAP Applications 15 SP7
* SUSE Package Hub 15 15-SP7
An update that solves six vulnerabilities can now be installed.
## Description:
This update for apptainer fixes the following issues:
* CVE-2026-56854: golang.org/x/crypto/ssh: source-address restriction bypassed
in 5 callback families (bsc#1278666).
* CVE-2026-56855: golang.org/x/crypto/ssh: prevent DoS on deadlocked
established channel (bsc#1278666).
* CVE-2026-78662: golang.org/x/crypto/ssh: prevent DoS on deadlocked undecided
channel (bsc#1278666).
* CVE-2026-84303: google.golang.org/grpc: xDS RBAC HTTP filter implementation
issue allows for bypass of authorization policies via mixed-case or
canonical-case header matches (bsc#1279333).
* CVE-2026-84304: google.golang.org/grpc: heap memory exhaustion via HTTP/2
DATA frame fragmentation (bsc#1279236).
* CVE-2026-84445: google.golang.org/grpc: DoS via crash due to missing
':authority' and 'Host' headers in gRPC-Go xDS servers (bsc#1279033).
## 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:
* openSUSE Leap 15.6
zypper in -t patch SUSE-2026-4308
* HPC Module 15-SP7
zypper in -t patch SUSE-SLE-Module-HPC-15-SP7-2026-4308
* SUSE Package Hub 15 15-SP7
zypper in -t patch SUSE-SLE-Module-Packagehub-Subpackages-15-SP7-2026-4308
* SUSE Linux Enterprise Server 15 SP6 LTSS
zypper in -t patch SUSE-SLE-Product-SLES-15-SP6-LTSS-2026-4308
## Package List:
* openSUSE Leap 15.6 (aarch64 x86_64)
* apptainer-suid-1.5.3-150600.4.43.1
* apptainer-debuginfo-1.5.3-150600.4.43.1
* apptainer-1.5.3-150600.4.43.1
* apptainer-suid-debuginfo-1.5.3-150600.4.43.1
* openSUSE Leap 15.6 (noarch)
* apptainer-sle15_6-1.5.3-150600.4.43.1
* apptainer-leap-1.5.3-150600.4.43.1
* apptainer-sle16-1.5.3-150600.4.43.1
* apptainer-sle15_7-1.5.3-150600.4.43.1
* HPC Module 15-SP7 (aarch64 x86_64)
* apptainer-debuginfo-1.5.3-150600.4.43.1
* apptainer-1.5.3-150600.4.43.1
* HPC Module 15-SP7 (noarch)
* apptainer-sle15_7-1.5.3-150600.4.43.1
* SUSE Package Hub 15 15-SP7 (aarch64 x86_64)
* apptainer-suid-1.5.3-150600.4.43.1
* apptainer-1.5.3-150600.4.43.1
* SUSE Linux Enterprise Server 15 SP6 LTSS (aarch64 x86_64)
* apptainer-debuginfo-1.5.3-150600.4.43.1
* apptainer-1.5.3-150600.4.43.1
* SUSE Linux Enterprise Server 15 SP6 LTSS (noarch)
* apptainer-sle15_6-1.5.3-150600.4.43.1
## References:
* https://www.suse.com/security/cve/CVE-2026-56854.html
* https://www.suse.com/security/cve/CVE-2026-56855.html
* https://www.suse.com/security/cve/CVE-2026-78662.html
* https://www.suse.com/security/cve/CVE-2026-84303.html
* https://www.suse.com/security/cve/CVE-2026-84304.html
* https://www.suse.com/security/cve/CVE-2026-84445.html
* https://bugzilla.suse.com/show_bug.cgi?id=1278666
* https://bugzilla.suse.com/show_bug.cgi?id=1279033
* https://bugzilla.suse.com/show_bug.cgi?id=1279236
* https://bugzilla.suse.com/show_bug.cgi?id=1279333
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