CVE-2023-34324

Updated: 2024-01-12 05:02:32.665548

Description:

Closing of an event channel in the Linux kernel can result in a deadlock. This happens when the close is being performed in parallel to an unrelated Xen console action and the handling of a Xen console interrupt in an unprivileged guest. The closing of an event channel is e.g. triggered by removal of a paravirtual device on the other side. As this action will cause console messages to be issued on the other side quite often, the chance of triggering the deadlock is not neglectable. Note that 32-bit Arm-guests are not affected, as the 32-bit Linux kernel on Arm doesn't use queued-RW-locks, which are required to trigger the issue (on Arm32 a waiting writer doesn't block further readers to get the lock).


Links NIST CIRCL RHEL Ubuntu

Severity

Severity Score
CVSS Version 2.x 0
CVSS Version 3.x MEDIUM 4.9

Status

OS name Project name Version Score Severity Status Errata Last updated
CentOS 6 ELS kernel 2.6.32 4.9 MEDIUM Ignored 2024-01-23 08:44:32
CentOS 7 ELS kernel 3.10.0 4.9 MEDIUM Ignored 2024-01-23 08:44:32
CentOS 8.4 ELS kernel 4.18.0 4.9 MEDIUM Ignored 2024-01-15 08:36:59
CentOS 8.5 ELS kernel 4.18.0 4.9 MEDIUM Ignored 2024-01-15 08:37:00
CloudLinux 6 ELS kernel 2.6.32 4.9 MEDIUM Ignored 2024-01-23 08:44:32
Oracle Linux 6 ELS kernel 2.6.32 4.9 MEDIUM Ignored 2024-01-23 08:44:32
Ubuntu 16.04 ELS linux 4.4.0 4.9 MEDIUM Released CLSA-2024:1706545934 2024-01-29 13:10:45
Ubuntu 16.04 ELS linux-hwe 4.15.0 4.9 MEDIUM Released CLSA-2024:1706624217 2024-01-30 10:09:45
Ubuntu 18.04 ELS linux 4.15.0 4.9 MEDIUM Released CLSA-2024:1706617379 2024-01-30 08:41:01