ALBA-2021:1092 zlib bug fix and enhancement update
Not scored
Published
Check this codebase for ALBA-2021:1092 and fix it if it is affected.
What it is: ALBA-2021:1092 is a vulnerability in zlib-static, published on 6 Apr 2021.
Exploitation: There is no known exploitation of ALBA-2021:1092 in the wild and no public exploit code.
Affected product: zlib-static. 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/ALBA-2021-1092/ (Markdown: https://insights.sbomify.com/ALBA-2021-1092/index.md)
Bug fixes for zlib compression level switching and inflateSyncPoint results on specific hardware architectures.
- Exploited in the wild
- Not known
- Login needed
- Not stated
- Attackable
- Not stated
- Victim action needed
- Not stated
- Fix
- Available
What is ALBA-2021:1092?
ALBA-2021:1092 is a vulnerability in zlib-static, published on 6 Apr 2021.
Official description
The zlib packages provide a general-purpose lossless data compression library that is used by many different programs.
Bug Fix(es) and Enhancement(s):
AlmaLinux8.1 - zlib: DFLTCC compression level switching issues (BZ#1926104)
AlmaLinux8.2 - zlib: inflateSyncPoint() returns an incorrect result on z15 (BZ#1932270)
Which versions are affected by ALBA-2021:1092?
Linux distribution packages (1)
zlib-static AlmaLinux:8 | All versions | 1.2.11-16.2.el8_3 |
How do I fix ALBA-2021:1092?
Apply the vendor's patch.
Is ALBA-2021:1092 being exploited?
There is no known exploitation of ALBA-2021:1092 in the wild and no public exploit code.