ALBA-2020:3657 zlib bug fix and enhancement update

Not scored Published

Bug fixes for zlib on s390x architecture address incomplete raw stream generation and hardware acceleration issues, ensuring data integrity.

Exploited in the wild
Not known
Login needed
Not needed
Attackable
Not stated
Victim action needed
Not needed
Fix
Available

What is ALBA-2020:3657?

ALBA-2020:3657 is a vulnerability in zlib-static, published on 8 Sep 2020.

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):

  • AlmaLinux8.2 - zlib on s390x may produce incomplete raw (but not gzip/zlib) streams (BZ#1860952)

  • AlmaLinux8.2 - raw zlib test failed with DFLTCC_LEVEL_MASK set to 0x1ff (BZ#1862108)

  • AlmaLinux8.2 - Fix support for IBM Z hardware-accelerated deflate (zlib) (BZ#1867876)

Which versions are affected by ALBA-2020:3657?

Linux distribution packages (1)
zlib-static AlmaLinux:8All versions1.2.11-16.el8_2

How do I fix ALBA-2020:3657?

Apply the vendor's patch.

Is ALBA-2020:3657 being exploited?

There is no known exploitation of ALBA-2020:3657 in the wild and no public exploit code.

Sources

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