CVE-2023-34324: Possible deadlock in Linux kernel event handling
First published: Tue Oct 10 2023(Updated: )
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).
Credit: security@xen.org security@xen.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Linux Linux kernel | <5.10 | |
| Xen Xen | ||
| debian/linux | 5.10.218-1 5.10.221-1 6.1.94-1 6.1.99-1 6.9.10-1 | |
| ubuntu/linux | <5.4.0-171.189 | 5.4.0-171.189 |
| ubuntu/linux | <5.15.0-94.104 | 5.15.0-94.104 |
| ubuntu/linux | <6.5.0-17.17 | 6.5.0-17.17 |
| ubuntu/linux | <6.6~<5.4.258<5.15.135<6.5.7 | 6.6~ 5.4.258 5.15.135 6.5.7 |
| ubuntu/linux-aws | <5.4.0-1118.128 | 5.4.0-1118.128 |
| ubuntu/linux-aws | <5.15.0-1053.58 | 5.15.0-1053.58 |
| ubuntu/linux-aws | <6.5.0-1013.13 | 6.5.0-1013.13 |
| ubuntu/linux-aws | <6.6~<5.4.258<5.15.135<6.5.7 | 6.6~ 5.4.258 5.15.135 6.5.7 |
| ubuntu/linux-aws-5.15 | <5.15.0-1053.58~20.04.1 | 5.15.0-1053.58~20.04.1 |
| ubuntu/linux-aws-5.15 | <6.6~<5.4.258<5.15.135<6.5.7 | 6.6~ 5.4.258 5.15.135 6.5.7 |
| ubuntu/linux-aws-5.4 | <5.4.0-1118.128~18.04.1 | 5.4.0-1118.128~18.04.1 |
| ubuntu/linux-aws-5.4 | <6.6~<5.4.258<5.15.135<6.5.7 | 6.6~ 5.4.258 5.15.135 6.5.7 |
| ubuntu/linux-aws-6.2 | <6.6~<5.4.258<5.15.135<6.5.7 | 6.6~ 5.4.258 5.15.135 6.5.7 |
| ubuntu/linux-aws-6.5 | <6.6~<5.4.258<5.15.135<6.5.7 | 6.6~ 5.4.258 5.15.135 6.5.7 |
| ubuntu/linux-aws-fips | <6.6~<5.4.258<5.15.135<6.5.7 | 6.6~ 5.4.258 5.15.135 6.5.7 |
| ubuntu/linux-aws-hwe | <6.6~<5.4.258<5.15.135<6.5.7 | 6.6~ 5.4.258 5.15.135 6.5.7 |
| ubuntu/linux-azure | <5.4.0-1123.130 | 5.4.0-1123.130 |
| ubuntu/linux-azure | <5.15.0-1056.64 | 5.15.0-1056.64 |
| ubuntu/linux-azure | <6.5.0-1015.15 | 6.5.0-1015.15 |
| ubuntu/linux-azure | <6.6~<5.4.258<5.15.135<6.5.7 | 6.6~ 5.4.258 5.15.135 6.5.7 |
| ubuntu/linux-azure-4.15 | <6.6~<5.4.258<5.15.135<6.5.7 | 6.6~ 5.4.258 5.15.135 6.5.7 |
| ubuntu/linux-azure-5.15 | <5.15.0-1056.64~20.04.1 | 5.15.0-1056.64~20.04.1 |
| ubuntu/linux-azure-5.15 | <6.6~<5.4.258<5.15.135<6.5.7 | 6.6~ 5.4.258 5.15.135 6.5.7 |
| ubuntu/linux-azure-5.4 | <5.4.0-1123.130~18.04.1 | 5.4.0-1123.130~18.04.1 |
| ubuntu/linux-azure-5.4 | <6.6~<5.4.258<5.15.135<6.5.7 | 6.6~ 5.4.258 5.15.135 6.5.7 |
| ubuntu/linux-azure-6.2 | <6.6~<5.4.258<5.15.135<6.5.7 | 6.6~ 5.4.258 5.15.135 6.5.7 |
| ubuntu/linux-azure-6.5 | <6.6~<5.4.258<5.15.135<6.5.7 | 6.6~ 5.4.258 5.15.135 6.5.7 |
| ubuntu/linux-azure-fde | <5.15.0-1056.64.1 | 5.15.0-1056.64.1 |
| ubuntu/linux-azure-fde | <6.6~<5.4.258<5.15.135<6.5.7 | 6.6~ 5.4.258 5.15.135 6.5.7 |
| ubuntu/linux-azure-fde-5.15 | <5.15.0-1056.64~20.04.1.1 | 5.15.0-1056.64~20.04.1.1 |
| ubuntu/linux-azure-fde-5.15 | <6.6~<5.4.258<5.15.135<6.5.7 | 6.6~ 5.4.258 5.15.135 6.5.7 |
| ubuntu/linux-azure-fde-6.2 | <6.6~<5.4.258<5.15.135<6.5.7 | 6.6~ 5.4.258 5.15.135 6.5.7 |
| ubuntu/linux-azure-fips | <6.6~<5.4.258<5.15.135<6.5.7 | 6.6~ 5.4.258 5.15.135 6.5.7 |
| ubuntu/linux-bluefield | <5.4.0-1078.84 | 5.4.0-1078.84 |
| ubuntu/linux-bluefield | <5.15.0-1035.37 | 5.15.0-1035.37 |
| ubuntu/linux-bluefield | <6.6~<5.4.258<5.15.135<6.5.7 | 6.6~ 5.4.258 5.15.135 6.5.7 |
| ubuntu/linux-fips | <6.6~<5.4.258<5.15.135<6.5.7 | 6.6~ 5.4.258 5.15.135 6.5.7 |
| ubuntu/linux-gcp | <5.4.0-1122.131 | 5.4.0-1122.131 |
| ubuntu/linux-gcp | <5.15.0-1051.59 | 5.15.0-1051.59 |
| ubuntu/linux-gcp | <6.5.0-1013.13 | 6.5.0-1013.13 |
| ubuntu/linux-gcp | <6.6~<5.4.258<5.15.135<6.5.7 | 6.6~ 5.4.258 5.15.135 6.5.7 |
| ubuntu/linux-gcp-4.15 | <6.6~<5.4.258<5.15.135<6.5.7 | 6.6~ 5.4.258 5.15.135 6.5.7 |
| ubuntu/linux-gcp-5.15 | <5.15.0-1051.59~20.04.1 | 5.15.0-1051.59~20.04.1 |
| ubuntu/linux-gcp-5.15 | <6.6~<5.4.258<5.15.135<6.5.7 | 6.6~ 5.4.258 5.15.135 6.5.7 |
| ubuntu/linux-gcp-5.19 | <6.6~<5.4.258<5.15.135<6.5.7 | 6.6~ 5.4.258 5.15.135 6.5.7 |
| ubuntu/linux-gcp-5.4 | <5.4.0-1122.131~18.04.1 | 5.4.0-1122.131~18.04.1 |
| ubuntu/linux-gcp-5.4 | <6.6~<5.4.258<5.15.135<6.5.7 | 6.6~ 5.4.258 5.15.135 6.5.7 |
| ubuntu/linux-gcp-6.5 | <6.6~<5.4.258<5.15.135<6.5.7 | 6.6~ 5.4.258 5.15.135 6.5.7 |
| ubuntu/linux-gcp-fips | <6.6~<5.4.258<5.15.135<6.5.7 | 6.6~ 5.4.258 5.15.135 6.5.7 |
| ubuntu/linux-gke | <5.15.0-1050.55 | 5.15.0-1050.55 |
| ubuntu/linux-gke | <6.6~<5.4.258<5.15.135<6.5.7 | 6.6~ 5.4.258 5.15.135 6.5.7 |
| ubuntu/linux-gkeop | <5.4.0-1085.89 | 5.4.0-1085.89 |
| ubuntu/linux-gkeop | <5.15.0-1036.42 | 5.15.0-1036.42 |
| ubuntu/linux-gkeop | <6.6~<5.4.258<5.15.135<6.5.7 | 6.6~ 5.4.258 5.15.135 6.5.7 |
| ubuntu/linux-gkeop-5.15 | <5.15.0-1036.42~20.04.1 | 5.15.0-1036.42~20.04.1 |
| ubuntu/linux-gkeop-5.15 | <6.6~<5.4.258<5.15.135<6.5.7 | 6.6~ 5.4.258 5.15.135 6.5.7 |
| ubuntu/linux-hwe | <6.6~<5.4.258<5.15.135<6.5.7 | 6.6~ 5.4.258 5.15.135 6.5.7 |
| ubuntu/linux-hwe-5.15 | <5.15.0-94.104~20.04.1 | 5.15.0-94.104~20.04.1 |
| ubuntu/linux-hwe-5.15 | <6.6~<5.4.258<5.15.135<6.5.7 | 6.6~ 5.4.258 5.15.135 6.5.7 |
| ubuntu/linux-hwe-5.4 | <5.4.0-171.189~18.04.1 | 5.4.0-171.189~18.04.1 |
| ubuntu/linux-hwe-5.4 | <6.6~<5.4.258<5.15.135<6.5.7 | 6.6~ 5.4.258 5.15.135 6.5.7 |
| ubuntu/linux-hwe-6.2 | <6.6~<5.4.258<5.15.135<6.5.7 | 6.6~ 5.4.258 5.15.135 6.5.7 |
| ubuntu/linux-hwe-6.5 | <6.5.0-17.17~22.04.1 | 6.5.0-17.17~22.04.1 |
| ubuntu/linux-hwe-6.5 | <6.6~<5.4.258<5.15.135<6.5.7 | 6.6~ 5.4.258 5.15.135 6.5.7 |
| ubuntu/linux-ibm | <5.4.0-1065.70 | 5.4.0-1065.70 |
| ubuntu/linux-ibm | <5.15.0-1046.49 | 5.15.0-1046.49 |
| ubuntu/linux-ibm | <6.6~<5.4.258<5.15.135<6.5.7 | 6.6~ 5.4.258 5.15.135 6.5.7 |
| ubuntu/linux-ibm-5.15 | <5.15.0-1046.49~20.04.1 | 5.15.0-1046.49~20.04.1 |
| ubuntu/linux-ibm-5.15 | <6.6~<5.4.258<5.15.135<6.5.7 | 6.6~ 5.4.258 5.15.135 6.5.7 |
| ubuntu/linux-ibm-5.4 | <5.4.0-1065.70~18.04.1 | 5.4.0-1065.70~18.04.1 |
| ubuntu/linux-ibm-5.4 | <6.6~<5.4.258<5.15.135<6.5.7 | 6.6~ 5.4.258 5.15.135 6.5.7 |
| ubuntu/linux-intel | <6.6~<5.4.258<5.15.135<6.5.7 | 6.6~ 5.4.258 5.15.135 6.5.7 |
| ubuntu/linux-intel-iotg | <5.15.0-1047.53 | 5.15.0-1047.53 |
| ubuntu/linux-intel-iotg | <6.6~<5.4.258<5.15.135<6.5.7 | 6.6~ 5.4.258 5.15.135 6.5.7 |
| ubuntu/linux-intel-iotg-5.15 | <5.15.0-1048.54~20.04.1 | 5.15.0-1048.54~20.04.1 |
| ubuntu/linux-intel-iotg-5.15 | <6.6~<5.4.258<5.15.135<6.5.7 | 6.6~ 5.4.258 5.15.135 6.5.7 |
| ubuntu/linux-iot | <5.4.0-1030.31 | 5.4.0-1030.31 |
| ubuntu/linux-iot | <6.6~<5.4.258<5.15.135<6.5.7 | 6.6~ 5.4.258 5.15.135 6.5.7 |
| ubuntu/linux-kvm | <5.4.0-1106.113 | 5.4.0-1106.113 |
| ubuntu/linux-kvm | <5.15.0-1050.55 | 5.15.0-1050.55 |
| ubuntu/linux-kvm | <6.6~<5.4.258<5.15.135<6.5.7 | 6.6~ 5.4.258 5.15.135 6.5.7 |
| ubuntu/linux-laptop | <6.5.0-1009.12 | 6.5.0-1009.12 |
| ubuntu/linux-laptop | <6.6~<5.4.258<5.15.135<6.5.7 | 6.6~ 5.4.258 5.15.135 6.5.7 |
| ubuntu/linux-lowlatency | <5.15.0-94.104 | 5.15.0-94.104 |
| ubuntu/linux-lowlatency | <6.5.0-17.17.1 | 6.5.0-17.17.1 |
| ubuntu/linux-lowlatency | <6.6~<5.4.258<5.15.135<6.5.7 | 6.6~ 5.4.258 5.15.135 6.5.7 |
| ubuntu/linux-lowlatency-hwe-5.15 | <5.15.0-94.104~20.04.1 | 5.15.0-94.104~20.04.1 |
| ubuntu/linux-lowlatency-hwe-5.15 | <6.6~<5.4.258<5.15.135<6.5.7 | 6.6~ 5.4.258 5.15.135 6.5.7 |
| ubuntu/linux-lowlatency-hwe-6.2 | <6.6~<5.4.258<5.15.135<6.5.7 | 6.6~ 5.4.258 5.15.135 6.5.7 |
| ubuntu/linux-lowlatency-hwe-6.5 | <6.5.0-17.17.1.1.1~22.04.1 | 6.5.0-17.17.1.1.1~22.04.1 |
| ubuntu/linux-lowlatency-hwe-6.5 | <6.6~<5.4.258<5.15.135<6.5.7 | 6.6~ 5.4.258 5.15.135 6.5.7 |
| ubuntu/linux-lts-xenial | <6.6~<5.4.258<5.15.135<6.5.7 | 6.6~ 5.4.258 5.15.135 6.5.7 |
| ubuntu/linux-nvidia | <5.15.0-1044.44 | 5.15.0-1044.44 |
| ubuntu/linux-nvidia | <6.6~<5.4.258<5.15.135<6.5.7 | 6.6~ 5.4.258 5.15.135 6.5.7 |
| ubuntu/linux-nvidia-6.2 | <6.6~<5.4.258<5.15.135<6.5.7 | 6.6~ 5.4.258 5.15.135 6.5.7 |
| ubuntu/linux-nvidia-6.5 | <6.6~<5.4.258<5.15.135<6.5.7 | 6.6~ 5.4.258 5.15.135 6.5.7 |
| ubuntu/linux-nvidia-6.8 | <6.6~<5.4.258<5.15.135<6.5.7 | 6.6~ 5.4.258 5.15.135 6.5.7 |
| ubuntu/linux-nvidia-lowlatency | <6.6~<5.4.258<5.15.135<6.5.7 | 6.6~ 5.4.258 5.15.135 6.5.7 |
| ubuntu/linux-oem-6.1 | <6.1.0-1025.25 | 6.1.0-1025.25 |
| ubuntu/linux-oem-6.1 | <6.6~<5.4.258<5.15.135<6.5.7 | 6.6~ 5.4.258 5.15.135 6.5.7 |
| ubuntu/linux-oem-6.5 | <6.5.0-1014.15 | 6.5.0-1014.15 |
| ubuntu/linux-oem-6.5 | <6.6~<5.4.258<5.15.135<6.5.7 | 6.6~ 5.4.258 5.15.135 6.5.7 |
| ubuntu/linux-oem-6.8 | <6.6~<5.4.258<5.15.135<6.5.7 | 6.6~ 5.4.258 5.15.135 6.5.7 |
| ubuntu/linux-oracle | <5.4.0-1117.126 | 5.4.0-1117.126 |
| ubuntu/linux-oracle | <5.15.0-1051.57 | 5.15.0-1051.57 |
| ubuntu/linux-oracle | <6.5.0-1015.15 | 6.5.0-1015.15 |
| ubuntu/linux-oracle | <6.6~<5.4.258<5.15.135<6.5.7 | 6.6~ 5.4.258 5.15.135 6.5.7 |
| ubuntu/linux-oracle-5.15 | <5.15.0-1051.57~20.04.1 | 5.15.0-1051.57~20.04.1 |
| ubuntu/linux-oracle-5.15 | <6.6~<5.4.258<5.15.135<6.5.7 | 6.6~ 5.4.258 5.15.135 6.5.7 |
| ubuntu/linux-oracle-5.4 | <5.4.0-1117.126~18.04.1 | 5.4.0-1117.126~18.04.1 |
| ubuntu/linux-oracle-5.4 | <6.6~<5.4.258<5.15.135<6.5.7 | 6.6~ 5.4.258 5.15.135 6.5.7 |
| ubuntu/linux-oracle-6.5 | <6.6~<5.4.258<5.15.135<6.5.7 | 6.6~ 5.4.258 5.15.135 6.5.7 |
| ubuntu/linux-raspi | <5.4.0-1102.114 | 5.4.0-1102.114 |
| ubuntu/linux-raspi | <5.15.0-1046.49 | 5.15.0-1046.49 |
| ubuntu/linux-raspi | <6.5.0-1010.13 | 6.5.0-1010.13 |
| ubuntu/linux-raspi | <6.6~<5.4.258<5.15.135<6.5.7 | 6.6~ 5.4.258 5.15.135 6.5.7 |
| ubuntu/linux-raspi-5.4 | <5.4.0-1102.114~18.04.1 | 5.4.0-1102.114~18.04.1 |
| ubuntu/linux-raspi-5.4 | <6.6~<5.4.258<5.15.135<6.5.7 | 6.6~ 5.4.258 5.15.135 6.5.7 |
| ubuntu/linux-riscv | <6.5.0-17.17.1 | 6.5.0-17.17.1 |
| ubuntu/linux-riscv | <6.6~<5.4.258<5.15.135<6.5.7 | 6.6~ 5.4.258 5.15.135 6.5.7 |
| ubuntu/linux-riscv-5.15 | <5.15.0-1049.53~20.04.2 | 5.15.0-1049.53~20.04.2 |
| ubuntu/linux-riscv-5.15 | <6.6~<5.4.258<5.15.135<6.5.7 | 6.6~ 5.4.258 5.15.135 6.5.7 |
| ubuntu/linux-riscv-6.5 | <6.6~<5.4.258<5.15.135<6.5.7 | 6.6~ 5.4.258 5.15.135 6.5.7 |
| ubuntu/linux-starfive | <6.5.0-1007.8 | 6.5.0-1007.8 |
| ubuntu/linux-starfive | <6.6~<5.4.258<5.15.135<6.5.7 | 6.6~ 5.4.258 5.15.135 6.5.7 |
| ubuntu/linux-starfive-6.2 | <6.6~<5.4.258<5.15.135<6.5.7 | 6.6~ 5.4.258 5.15.135 6.5.7 |
| ubuntu/linux-starfive-6.5 | <6.6~<5.4.258<5.15.135<6.5.7 | 6.6~ 5.4.258 5.15.135 6.5.7 |
| ubuntu/linux-xilinx-zynqmp | <5.4.0-1037.41 | 5.4.0-1037.41 |
| ubuntu/linux-xilinx-zynqmp | <5.15.0-1027.31 | 5.15.0-1027.31 |
| ubuntu/linux-xilinx-zynqmp | <6.6~<5.4.258<5.15.135<6.5.7 | 6.6~ 5.4.258 5.15.135 6.5.7 |
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Reference Links
- https://xenbits.xenproject.org/xsa/advisory-441.html
- https://lists.debian.org/debian-lts-announce/2024/01/msg00004.html
- https://lists.debian.org/debian-lts-announce/2024/01/msg00005.html
- https://launchpad.net/bugs/cve/CVE-2023-34324
- https://xenbits.xen.org/xsa/advisory-441.html
- https://git.kernel.org/linus/87797fad6cce28ec9be3c13f031776ff4f104cfc
- https://security-tracker.debian.org/tracker/CVE-2023-34324
- https://ubuntu.com/security/notices/USN-6461-1
- https://ubuntu.com/security/notices/USN-6624-1
- https://ubuntu.com/security/notices/USN-6625-1
- https://ubuntu.com/security/notices/USN-6626-1
- https://ubuntu.com/security/notices/USN-6625-2
- https://ubuntu.com/security/notices/USN-6628-1
- https://ubuntu.com/security/notices/USN-6626-2
- https://ubuntu.com/security/notices/USN-6628-2
- https://ubuntu.com/security/notices/USN-6626-3
- https://ubuntu.com/security/notices/USN-6625-3
- https://ubuntu.com/security/notices/USN-6652-1
- https://www.cve.org/CVERecord?id=CVE-2023-34324
- https://nvd.nist.gov/vuln/detail/CVE-2023-34324
- https://git.kernel.org/linus/54c9de89895e0a36047fcc4ae754ea5b8655fb9d
- https://ubuntu.com/security/CVE-2023-34324
Parent vulnerabilities
(Appears in the following advisories)
- collector/oss-sec
- alias/CVE-2023-34324
- agent/type
- agent/first-publish-date
- collector/mitre-cve
- source/MITRE
- agent/last-modified-date
- agent/severity
- agent/author
- agent/remedy
- agent/title
- agent/weakness
- collector/nvd-api
- source/NVD
- agent/software-canonical-lookup
- collector/nvd-cve
- agent/description
- collector/launchpad-cve
- source/Launchpad
- agent/references
- agent/event
- agent/tags
- collector/security-tracker-debian
- source/Debian
- agent/softwarecombine
- collector/usn-cve
- source/Ubuntu
- vendor/linux
- canonical/linux linux kernel
- vendor/xen
- canonical/xen xen
- package-manager/debian
- package-manager/ubuntu