USN-7302-1: libxml2 vulnerabilities

25 February 2025

Several security issues were fixed in libxml2.

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Details

It was discovered that libxml2 incorrectly handled certain memory
operations. A remote attacker could use this issue to cause libxml2 to
crash, resulting in a denial of service, or possibly execute arbitrary
code. This issue only affected Ubuntu 14.04 LTS, Ubuntu 16.04 LTS, and
Ubuntu 18.04 LTS. (CVE-2022-49043)

It was discovered that the libxml2 xmllint tool incorrectly handled
certain memory operations. If a user or automated system were tricked into
running xmllint on a specially crafted xml file, a remote attacker could
cause xmllint to crash, resulting in a denial of service. This issue only
affected Ubuntu 14.04 LTS, Ubuntu 16.04 LTS, and Ubuntu 18.04 LTS.
(CVE-2024-34459)

It was discovered that libxml2 did not properly manage memory. An attacker
could possibly use this issue to cause a denial of service or execute
arbitrary code. (CVE-2024-56171)

It was discovered that libxml2 could be made to write out of bounds. An
attacker could possibly use this issue to cause a denial of service or
execute arbitrary code. (CVE-2025-24928)

It was discovered that libxml2 could be made to dereference invalid memory.
An attacker could possibly use this issue to cause a denial of service.
(CVE-2025-27113)

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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.

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Update instructions

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

Ubuntu 24.10
Ubuntu 24.04
Ubuntu 22.04
Ubuntu 20.04
Ubuntu 18.04
Ubuntu 16.04
Ubuntu 14.04

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

References

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