=========================================================================Ubuntu Security Notice USN-5731-1
November 17, 2022

multipath-tools vulnerabilities
=========================================================================
A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 22.10
- Ubuntu 22.04 LTS
- Ubuntu 20.04 LTS
- Ubuntu 18.04 LTS

Summary:

Several security issues were fixed in multipath-tools.

Software Description:
- multipath-tools: maintain multipath block device access

Details:

It was discovered that multipath-tools incorrectly handled symlinks. A
local attacker could possibly use this issue, in combination with other
issues, to escalate privileges. This issue only affected Ubuntu 20.04 LTS,
Ubuntu 22.04 LTS, and Ubuntu 22.10. (CVE-2022-41973)

It was discovered that multipath-tools incorrectly handled access controls.
A local attacker could possibly use this issue, in combination with other
issues, to escalate privileges. (CVE-2022-41974)

Update instructions:

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

Ubuntu 22.10:
   multipath-tools                 0.8.8-1ubuntu1.22.10.1

Ubuntu 22.04 LTS:
   multipath-tools                 0.8.8-1ubuntu1.22.04.1

Ubuntu 20.04 LTS:
   multipath-tools                 0.8.3-1ubuntu2.1

Ubuntu 18.04 LTS:
   multipath-tools                 0.7.4-2ubuntu3.2

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

References:
   https://ubuntu.com/security/notices/USN-5731-1
   CVE-2022-41973, CVE-2022-41974

Package Information:
   https://launchpad.net/ubuntu/+source/multipath-tools/0.8.8-1ubuntu1.22.10.1
   
   https://launchpad.net/ubuntu/+source/multipath-tools/0.8.3-1ubuntu2.1
   https://launchpad.net/ubuntu/+source/multipath-tools/0.7.4-2ubuntu3.2