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USN-5699-1: GNU C Library vulnerabilities

25 October 2022

Several security issues were fixed in GNU C Library.

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Releases

Packages

Details

Jan Engelhardt, Tavis Ormandy, and others discovered that the GNU C Library
iconv feature incorrectly handled certain input sequences. An attacker
could possibly use this issue to cause the GNU C Library to hang or crash,
resulting in a denial of service. (CVE-2021-3326)

It was discovered that the GNU C Library nscd daemon incorrectly handled
certain netgroup lookups. An attacker could possibly use this issue to
cause the GNU C Library to crash, resulting in a denial of service.
(CVE-2021-35942)

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 16.04

After a standard system update you need to reboot your computer to make
all the necessary changes.

Related notices

  • USN-5310-1: libc6-armel, libc6-dev-armel, libc-devtools, libc6-dev-s390, libc6, glibc, libc6-s390, glibc-source, libc-dev-bin, libc6-lse, multiarch-support, locales, glibc-doc, libc6-x32, locales-all, libc6-amd64, libc6-i386, libc6-dev, libc6-dev-x32, libc6-dev-amd64, libc-bin, libc6-prof, libc6-dev-i386, nscd, libc6-pic