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SUSE SLES12 Security Update : containerd (SUSE-SU-2026:2640-1)

high Nessus Plugin ID 323051

Synopsis

The remote SUSE host is missing one or more security updates.

Description

The remote SUSE Linux SLES12 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:2640-1 advisory.

 This update for containerd fixes the following issues

 - CVE-2026-33186: google.golang.org/grpc: authorization bypass due to improper validation of the HTTP/2 :path pseudo- header (bsc#1260296).
 - CVE-2026-33814: golang.org/x/net/http2: infinite loop in HTTP/2 transport when given bad SETTINGS_MAX_FRAME_SIZE (bsc#1265794).
 - CVE-2026-34986: github.com/go-jose/go-jose/v3: crafted JWE input with a missing encrypted key can lead to a denial of service (bsc#1262948).
 - CVE-2026-39821: golang.org/x/net/idna: failure to reject ASCII-only Punycode-encoded labels allows for validation bypass and privilege escalation (bsc#1266640).

Tenable has extracted the preceding description block directly from the SUSE security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Solution

Update the affected containerd, containerd-ctr and / or containerd-devel packages.

See Also

https://bugzilla.suse.com/1260296

https://bugzilla.suse.com/1262948

https://bugzilla.suse.com/1265794

https://bugzilla.suse.com/1266640

https://lists.suse.com/pipermail/sle-updates/2026-June/047639.html

https://www.suse.com/security/cve/CVE-2026-33186

https://www.suse.com/security/cve/CVE-2026-33814

https://www.suse.com/security/cve/CVE-2026-34986

https://www.suse.com/security/cve/CVE-2026-39821

Plugin Details

Severity: High

ID: 323051

File Name: suse_SU-2026-2640-1.nasl

Version: 1.1

Type: Local

Agent: unix

Published: 6/26/2026

Updated: 6/26/2026

Supported Sensors: Nessus Agent, Continuous Assessment, Nessus

Risk Information

VPR

Risk Factor: High

Score: 7.1

CVSS v2

Risk Factor: High

Base Score: 7.8

Temporal Score: 6.1

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C

CVSS Score Source: CVE-2026-33814

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.7

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:novell:suse_linux:containerd-devel, p-cpe:/a:novell:suse_linux:containerd, p-cpe:/a:novell:suse_linux:containerd-ctr, cpe:/o:novell:suse_linux:12

Required KB Items: Host/local_checks_enabled, Host/cpu, Host/SuSE/release, Host/SuSE/rpm-list

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 6/26/2026

Vulnerability Publication Date: 3/18/2026

Reference Information

CVE: CVE-2026-33186, CVE-2026-33814, CVE-2026-34986, CVE-2026-39821

SuSE: SUSE-SU-2026:2640-1