Your submission was sent successfully! Close

Thank you for contacting us. A member of our team will be in touch shortly. Close

You have successfully unsubscribed! Close

Thank you for signing up for our newsletter!
In these regular emails you will find the latest updates about Ubuntu and upcoming events where you can meet our team.Close

USN-6736-2: klibc vulnerabilities

23 May 2024

Several security issues were fixed in klibc.

Reduce your security exposure

Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines.

Learn more about Ubuntu Pro

Releases

Packages

  • klibc - small utilities built with klibc for early boot

Details

USN-6736-1 fixed vulnerabilities in klibc. This update provides the
corresponding updates for Ubuntu 24.04 LTS.

Original advisory details:

It was discovered that zlib, vendored in klibc, incorrectly handled pointer
arithmetic. An attacker could use this issue to cause klibc to crash or to
possibly execute arbitrary code. (CVE-2016-9840, CVE-2016-9841)

Danilo Ramos discovered that zlib, vendored in klibc, incorrectly handled
memory when performing certain deflating operations. An attacker could use
this issue to cause klibc to crash or to possibly execute arbitrary code.
(CVE-2018-25032)

Evgeny Legerov discovered that zlib, vendored in klibc, incorrectly handled
memory when performing certain inflate operations. An attacker could use
this issue to cause klibc to crash or to possibly execute arbitrary code.
(CVE-2022-37434)

Reduce your security exposure

Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines.

Learn more about Ubuntu Pro

Update instructions

The problem can be corrected by updating your system to the following package versions:

Ubuntu 24.04

In general, a standard system update will make all the necessary changes.

References

Related notices

  • USN-4246-1: lib64z1-dev, libx32z1, lib32z1-dev, zlib1g-dev, zlib, zlib1g-udeb, lib32z1, lib64z1, libx32z1-dev, zlib1g
  • USN-4292-1: rsync
  • USN-6736-1: libklibc, libklibc-dev, klibc, klibc-utils
  • USN-5570-1: lib64z1-dev, libx32z1, lib32z1-dev, zlib1g-dev, zlib, zlib-bin, lib32z1, lib64z1, libx32z1-dev, zlib1g
  • USN-5573-1: rsync
  • USN-5570-2: lib64z1-dev, libx32z1, lib32z1-dev, zlib1g-dev, zlib, lib32z1, lib64z1, libx32z1-dev, zlib1g
  • USN-5355-1: lib64z1-dev, libx32z1, lib32z1-dev, zlib1g-dev, zlib, lib32z1, lib64z1, libx32z1-dev, zlib1g
  • USN-5355-2: lib64z1-dev, libx32z1, lib32z1-dev, zlib1g-dev, zlib, zlib-bin, lib32z1, lib64z1, libx32z1-dev, zlib1g
  • USN-5359-1: rsync
  • USN-5359-2: rsync
  • USN-5739-1: mariadb-plugin-spider, mariadb-client-10.6, mariadb-plugin-cracklib-password-check, libmariadb-dev, mariadb-10.6, mariadb-plugin-mroonga, mariadb-plugin-tokudb, libmariadbclient-dev, mariadb-test-data, mariadb-client-core-10.6, mariadb-backup, mariadb-10.3, mariadb-client-10.3, mariadb-plugin-s3, mariadb-server-10.3, mariadb-test, mariadb-server-core-10.6, libmariadbd-dev, mariadb-plugin-oqgraph, libmariadb3, libmariadbd19, mariadb-plugin-connect, mariadb-server, mariadb-plugin-rocksdb, mariadb-server-10.6, mariadb-server-core-10.3, mariadb-plugin-gssapi-server, libmariadb-dev-compat, mariadb-client-core-10.3, mariadb-common, mariadb-client, mariadb-plugin-gssapi-client

Join the discussion

Need help with your security needs?

Ubuntu Pro provides up to ten-year security coverage for over 23,000 open-source packages within the Ubuntu Main and Universe repositories.

Talk to an expert to find out what would work best for you

Further reading