Home / mailings

PDF

[USN-9076-1] libsolv vulnerability

Posted on 13 November 2026
Ubuntu Security

==========================================================================Ubuntu Security Notice USN-9076-1
November 12, 2026

libsolv vulnerability
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 18.04 LTS
- Ubuntu 16.04 LTS

Summary:

libsolv could be made to crash if it opened a specially crafted file.

Software Description:
- libsolv: dependency solver using a satisfiability algorithm

Details:

It was discovered that libsolv incorrectly handled certain repository data,
leading to a heap-based buffer over-read. An attacker could possibly use
this issue to cause libsolv to crash, resulting in a denial of service.

Update instructions:

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

Ubuntu 18.04 LTS
libsolv0 0.6.30-1ubuntu0.1~esm2
Available with Ubuntu Pro
libsolvext0 0.6.30-1ubuntu0.1~esm2
Available with Ubuntu Pro

Ubuntu 16.04 LTS
libsolv0 0.6.11-1.1ubuntu0.1~esm1
Available with Ubuntu Pro
libsolvext0 0.6.11-1.1ubuntu0.1~esm1
Available with Ubuntu Pro

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

References:
https://ubuntu.com/security/notices/USN-9076-1
CVE-2019-20387

--===============7708712559816607560==Content-Type: application/pgp-signature; name="signature.asc"
Content-Description: OpenPGP digital signature

 

TOP