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openSUSE Leap 16.0 nebula Important Update DoS CVE-2025-22869 20581-1

opensuse
Calendar Grey April 21, 2026
Dist Opensuse Esm H88
An important security update for openSUSE fixes critical vulnerability in nebula, improving overall system integrity.
An update that solves one vulnerability can now be installed.

Description

This update for nebula fixes the following issues:

Changes in nebula:

- Update to version 1.10.3:

* Fix an issue where blocklist bypass is possible when using curve P256

Any newly issued P256 based certificates will have their signature clamped

to the low-s form. Nebula will assert the low-s signature form when

validating certificates in a future version

- Update to version 1.10.2:

* Fix panic when using use_system_route_table

- Update to version 1.10.1:

* Fix a bug where an unsafe route derived from the system route table could

be lost on a config reload

* Fix the PEM banner for ECDSA P256 public keys

* Fix a bug in handshake processing when a peer sends an unexpected public key

* Add a config option to control accepting recv_error packets which defaults

to always

- Update to version 1.10.0:

* Support for ipv6 and multiple ipv4/6 addresses in the overlay

* Add the ability to mark packets on linux to better target nebula packets in

...

Read the Full Advisory

Patch

Package List

- openSUSE Leap 16.0:

nebula-1.10.3-bp160.1.1

nebula-cert-1.10.3-bp160.1.1

References

* https://www.suse.com/security/cve/CVE-2025-22869.html

Severity
important
Lowest
Low
Medium
High
Critical

Announcement ID: openSUSE-SU-2026:20581-1
Rating: important
Affected Products: openSUSE Leap 16.0 -------------------------------------------------------------

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