openSUSE-SU-2026:21112-1 Security update for xwayland
Not scored
Published
Check this codebase for openSUSE-SU-2026:21112-1 and fix it if it is affected.
What it is: openSUSE-SU-2026:21112-1 is an use after free vulnerability in xwayland, published on 19 Jun 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: There is no known exploitation of openSUSE-SU-2026:21112-1 in the wild and no public exploit code.
Affected product: xwayland. No package-level version data is available, so check the vendor advisory linked from the reference page.
Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.
Reference: https://insights.sbomify.com/openSUSE-SU-2026-21112-1/ (Markdown: https://insights.sbomify.com/openSUSE-SU-2026-21112-1/index.md)
Multiple memory corruption vulnerabilities in XWayland allow attackers to execute arbitrary code or disclose sensitive information.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is openSUSE-SU-2026:21112-1?
openSUSE-SU-2026:21112-1 is an use after free vulnerability in xwayland, published on 19 Jun 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
This update for xwayland fixes the following issues:
- CreateSaverWindow Use-After-Free Information Disclosure. (bsc#1266301)
- Font Alias Stack-based Buffer Overflow. (bsc#1266294)
- GLX ChangeDrawableAttributes Out-Of-Bounds Read/Write. (bsc#1266300)
- XKB Key Types Stack-based Buffer Overflow. (bsc#1266296)
- XKB SetMap Request Stack-based Buffer Overflow. (bsc#1266297)
- XSYNC Use-After-Free in FreeCounter(). (bsc#1266298)
- XSYNC Use-After-Free in miSyncDestroyFence(). (bsc#1266295)
- XSYNC Use-After-Free in SyncChangeCounter(). (bsc#1266299)
Which versions are affected by openSUSE-SU-2026:21112-1?
Linux distribution packages (1)
xwayland openSUSE:Leap 16.0 | All versions | 24.1.6-160000.5.1 |
How do I fix openSUSE-SU-2026:21112-1?
Apply the vendor's patch.
Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.
Is openSUSE-SU-2026:21112-1 being exploited?
There is no known exploitation of openSUSE-SU-2026:21112-1 in the wild and no public exploit code.