# CVE-2023-34324: linux: Closing of an event channel in the Linux kernel can result in a deadlock CVE-2023-34324 is fixed in 21 products on 1 platform, first by ALAS2023-2023-422, released October 30, 2023. It is not reported as exploited. Patch Radar priority: Routine. - Web page: https://patchblox.com/security/cve/CVE-2023-34324 - Priority: Routine - CVSS: 4.9 (medium) - EPSS: 0.0115 - CISA KEV: not listed - Exploited (vendor report): no - Publicly disclosed: no - Published: Oct 30, 2023 ## 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). ## Where it's fixed | Platform | Product | Fixed in | Fix | Released | |---|---|---|---|---| | Linux | bpftool amzn 2023 | 6.1.59-84.139.amzn2023 | [ALAS2023-2023-422](https://patchblox.com/security/data/fix/linux/alas2023-2023-422.md) | Oct 30, 2023 | | Linux | bpftool-debuginfo amzn 2023 | 6.1.59-84.139.amzn2023 | [ALAS2023-2023-422](https://patchblox.com/security/data/fix/linux/alas2023-2023-422.md) | Oct 30, 2023 | | Linux | kernel amzn 2023 | 6.1.59-84.139.amzn2023 | [ALAS2023-2023-422](https://patchblox.com/security/data/fix/linux/alas2023-2023-422.md) | Oct 30, 2023 | | Linux | kernel-debuginfo amzn 2023 | 6.1.59-84.139.amzn2023 | [ALAS2023-2023-422](https://patchblox.com/security/data/fix/linux/alas2023-2023-422.md) | Oct 30, 2023 | | Linux | kernel-debuginfo-common-aarch64 amzn 2023 | 6.1.59-84.139.amzn2023 | [ALAS2023-2023-422](https://patchblox.com/security/data/fix/linux/alas2023-2023-422.md) | Oct 30, 2023 | | Linux | kernel-debuginfo-common-x86_64 amzn 2023 | 6.1.59-84.139.amzn2023 | [ALAS2023-2023-422](https://patchblox.com/security/data/fix/linux/alas2023-2023-422.md) | Oct 30, 2023 | | Linux | kernel-devel amzn 2023 | 6.1.59-84.139.amzn2023 | [ALAS2023-2023-422](https://patchblox.com/security/data/fix/linux/alas2023-2023-422.md) | Oct 30, 2023 | | Linux | kernel-headers amzn 2023 | 6.1.59-84.139.amzn2023 | [ALAS2023-2023-422](https://patchblox.com/security/data/fix/linux/alas2023-2023-422.md) | Oct 30, 2023 | | Linux | kernel-libbpf amzn 2023 | 6.1.59-84.139.amzn2023 | [ALAS2023-2023-422](https://patchblox.com/security/data/fix/linux/alas2023-2023-422.md) | Oct 30, 2023 | | Linux | kernel-libbpf-devel amzn 2023 | 6.1.59-84.139.amzn2023 | [ALAS2023-2023-422](https://patchblox.com/security/data/fix/linux/alas2023-2023-422.md) | Oct 30, 2023 | | Linux | kernel-libbpf-static amzn 2023 | 6.1.59-84.139.amzn2023 | [ALAS2023-2023-422](https://patchblox.com/security/data/fix/linux/alas2023-2023-422.md) | Oct 30, 2023 | | Linux | kernel-livepatch-6.1.59-84.139 amzn 2023 | 1.0-0.amzn2023 | [ALAS2023-2023-422](https://patchblox.com/security/data/fix/linux/alas2023-2023-422.md) | Oct 30, 2023 | | Linux | kernel-modules-extra amzn 2023 | 6.1.59-84.139.amzn2023 | [ALAS2023-2023-422](https://patchblox.com/security/data/fix/linux/alas2023-2023-422.md) | Oct 30, 2023 | | Linux | kernel-tools amzn 2023 | 6.1.59-84.139.amzn2023 | [ALAS2023-2023-422](https://patchblox.com/security/data/fix/linux/alas2023-2023-422.md) | Oct 30, 2023 | | Linux | kernel-tools-debuginfo amzn 2023 | 6.1.59-84.139.amzn2023 | [ALAS2023-2023-422](https://patchblox.com/security/data/fix/linux/alas2023-2023-422.md) | Oct 30, 2023 | | Linux | kernel-tools-devel amzn 2023 | 6.1.59-84.139.amzn2023 | [ALAS2023-2023-422](https://patchblox.com/security/data/fix/linux/alas2023-2023-422.md) | Oct 30, 2023 | | Linux | linux Debian 12.15 (bookworm) | 6.1.64-1 | [DEBIAN-CVE-2023-34324](https://patchblox.com/security/data/fix/linux/debian-cve-2023-34324.md) | Jan 5, 2024 | | Linux | linux Debian 13.5 (trixie) | 6.5.8-1 | [DEBIAN-CVE-2023-34324](https://patchblox.com/security/data/fix/linux/debian-cve-2023-34324.md) | Jan 5, 2024 | | Linux | linux Debian 14 | 6.5.8-1 | [DEBIAN-CVE-2023-34324](https://patchblox.com/security/data/fix/linux/debian-cve-2023-34324.md) | Jan 5, 2024 | | Linux | perf amzn 2023 | 6.1.59-84.139.amzn2023 | [ALAS2023-2023-422](https://patchblox.com/security/data/fix/linux/alas2023-2023-422.md) | Oct 30, 2023 | | Linux | perf-debuginfo amzn 2023 | 6.1.59-84.139.amzn2023 | [ALAS2023-2023-422](https://patchblox.com/security/data/fix/linux/alas2023-2023-422.md) | Oct 30, 2023 | | Linux | python3-perf amzn 2023 | 6.1.59-84.139.amzn2023 | [ALAS2023-2023-422](https://patchblox.com/security/data/fix/linux/alas2023-2023-422.md) | Oct 30, 2023 | | Linux | python3-perf-debuginfo amzn 2023 | 6.1.59-84.139.amzn2023 | [ALAS2023-2023-422](https://patchblox.com/security/data/fix/linux/alas2023-2023-422.md) | Oct 30, 2023 | --- Data as of 2026-11-09T01:18:40Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo Free to use with attribution: show "Data: Patchblox Patch Radar" with a link to https://patchblox.com/security/patch-radar. Terms, including what needs a written agreement: https://patchblox.com/security/patch-radar/use-the-data Product names, logos and trademarks shown on Patch Radar belong to their respective owners. They are used only to identify the software each security fix applies to and to help readers find their platform. Their use does not imply any affiliation with, or endorsement by, those owners, and Patchblox is not affiliated with any of them.