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openSUSE Google Guest Agent Important DoS Fix Advisory 2026-21069-1

opensuse
Calendar Grey June 30, 2026
Dist Opensuse Esm H88
This important update for google-guest-agent addresses 15 issues, ensuring enhanced security for openSUSE systems.
An update that solves 15 vulnerabilities and has 5 bug fixes can now be installed.

Description

This update for google-guest-agent 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#1260264).

- CVE-2026-39821: golang.org/x/net/idna: failure to reject ASCII-only Punycode-encoded labels allows for validation

bypass and privilege escalation (bsc#1266603).

- CVE-2026-39827: Invoking memory leak when rejecting channels can lead to DoS in golang.org/x/crypto/ssh (bsc#1266171).

- CVE-2026-39828: Invoking bypass of certificate restrictions in golang.org/x/crypto/ssh (bsc#1266171).

- CVE-2026-39829: Invoking pathological RSA/DSA parameters may cause DoS in golang.org/x/crypto/ssh (bsc#1266171).

- CVE-2026-39830: Invoking client can cause server deadlock on unexpected responses in golang.org/x/crypto/ssh

(bsc#1266171).

- CVE-2026-39831: Invoking bypass of FIDO/U2F security keys physical interaction in golang.org/x/crypto/ssh

(bsc#1266171).

- CVE-2026-39832: Invoking agent...

Read the Full Advisory

Topics%20covered

Topics Covered

security advisory denial of service important OpenSUSE authorization bypass Google Guest Agent

Patch

Package List

- openSUSE Leap 16.0:

google-guest-agent-20260529.00-160000.1.1

References

* bsc#1243254

* bsc#1243505

* bsc#1260264

* bsc#1266171

* bsc#1266603

References:

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

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

* https://www.suse.com/security/cve/CVE-2026-39827.html

* https://www.suse.com/security/cve/CVE-2026-39828.html

* https://www.suse.com/security/cve/CVE-2026-39829.html

* https://www.suse.com/security/cve/CVE-2026-39830.html

* https://www.suse.com/security/cve/CVE-2026-39831.html

* https://www.suse.com/security/cve/CVE-2026-39832.html

* https://www.suse.com/security/cve/CVE-2026-39833.html

* https://www.suse.com/security/cve/CVE-2026-39834.html

* https://www.suse.com/security/cve/CVE-2026-39835.html

* https://www.suse.com/security/cve/CVE-2026-42508.html

* https://www.suse.com/security/cve/CVE-2026-46595.html

* https://www.suse.com/security/cve/CVE-2026-46597.html

* https://www.suse.com/security/cve/CVE-2026-46598.html

Severity
important
Lowest
Low
Medium
High
Critical

Announcement ID: openSUSE-SU-2026:21069-1
Rating: important
Affected Products: openSUSE Leap 16.0 -------------------------------------------------------------

Topics%20covered

Topics Covered

security advisory denial of service important OpenSUSE authorization bypass Google Guest Agent

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