USN-5759-2: LibBPF vulnerabilities
8 December 2022
Several security issues were fixed in LibBPF.
Releases
Packages
- libbpf - eBPF helper library (development files)
Details
USN-5759-1 fixed vulnerabilities in LibBPF. This update provides the
corresponding updates for Ubuntu 20.04 ESM.
Original advisory details:
It was discovered that LibBPF incorrectly handled certain memory operations
under certain circumstances. An attacker could possibly use this issue to
cause LibBPF to crash, resulting in a denial of service, or possibly
execute arbitrary code. This issue only affected Ubuntu 22.10.
(CVE-2021-45940, CVE-2021-45941, CVE-2022-3533)
It was discovered that LibBPF incorrectly handled certain memory operations
under certain circumstances. An attacker could possibly use this issue to
cause LibBPF to crash, resulting in a denial of service, or possibly
execute arbitrary code. (CVE-2022-3534, CVE-2022-3606)
Update instructions
The problem can be corrected by updating your system to the following package versions:
Ubuntu 20.04
-
libbpf0
-
1:0.5.0-1~ubuntu20.04.1+esm1
Available with Ubuntu Pro
In general, a standard system update will make all the necessary changes.
References
Related notices
- USN-5759-1: libbpf0, libbpf, libbpf-dev
- USN-6215-1: dwarves, dwarves-dfsg