Headline
Ubuntu Security Notice USN-5583-2
Ubuntu Security Notice 5583-2 - USN-5583-1 fixed vulnerabilities in systemd. Unfortunately this caused a regression by introducing networking problems for some users. This update fixes the problem. It was discovered that systemd incorrectly handled certain DNS requests, which leads to user-after-free vulnerability. An attacker could possibly use this issue to cause a crash or execute arbitrary code.
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Ubuntu Security Notice USN-5583-2
September 14, 2022
systemd regression
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 18.04 LTS
Summary:
USN-5583-1 caused a regression in systemd
Software Description:
- systemd: system and service manager
Details:
USN-5583-1 fixed vulnerabilities in systemd. Unfortunately this caused a
regression by introducing netowrking problems for some users. This update fixes
the problem.
We apologize for the inconvenience.
Original advisory details:
It was discovered that systemd incorrectly handled certain DNS requests,
which leads to user-after-free vulnerability. An attacker could possibly use
this issue to cause a crash or execute arbitrary code. (CVE-2022-2526)
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 18.04 LTS:
systemd 237-3ubuntu10.56
In general, a standard system update will make all the necessary changes.
References:
https://ubuntu.com/security/notices/USN-5583-2
https://ubuntu.com/security/notices/USN-5583-1
https://launchpad.net/bugs/1988119
Package Information:
https://launchpad.net/ubuntu/+source/systemd/237-3ubuntu10.56
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