🛡️ UBUNTU-CVE-2021-3923
⚪ Unknown ✅ No Known Exploit OSV
N/A
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

A flaw was found in the Linux kernel's implementation of RDMA over infiniband. An attacker with a privileged local account can leak kernel stack information when issuing commands to the /dev/infiniband/rdma_cm device node. While this access is unlikely to leak sensitive user information, it can be further used to defeat existing kernel protection mechanisms.

Details

Severity Unknown
CVSS Score N/A
CVSS Vector CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:N
CWE N/A
Public Exploit ✅ No
Source OSV
Published 2023-03-27
Updated 2026-06-15
Modified 2026-06-03
Fix URL N/A

Affected Packages

Software From version Fixed in
linux 5.4.0-105.119
linux-aws 5.4.0-1069.73
linux-aws-5.0
linux-aws-5.11
linux-aws-5.13
linux-aws-5.3
linux-aws-5.4 5.4.0-1069.73~18.04.1
linux-aws-5.8
linux-aws-fips
linux-aws-hwe 4.15.0-1124.133~16.04.1
linux-azure 5.4.0-1073.76
linux-azure-4.15 4.15.0-1134.147
linux-azure-5.11
linux-azure-5.13
linux-azure-5.3
linux-azure-5.4 5.4.0-1073.76~18.04.1
linux-azure-5.8
linux-azure-edge
linux-azure-fips
linux-bluefield
linux-dell300x 4.15.0-1038.43
linux-fips
linux-gcp 5.4.0-1068.72
linux-gcp-4.15 4.15.0-1119.133
linux-gcp-5.11
linux-gcp-5.13
linux-gcp-5.3
linux-gcp-5.4 5.4.0-1068.72~18.04.1
linux-gcp-5.8
linux-gcp-fips
linux-gke 5.4.0-1066.69
linux-gke-4.15
linux-gke-5.4
linux-gkeop 5.4.0-1037.38
linux-gkeop-5.4
linux-hwe
linux-hwe-5.11
linux-hwe-5.13
linux-hwe-5.4 5.4.0-105.119~18.04.1
linux-hwe-5.8
linux-hwe-edge
linux-ibm 5.4.0-1018.20
linux-ibm-5.4 5.4.0-1018.20~18.04.1
linux-intel-5.13
linux-intel-iot-realtime
linux-kvm 5.4.0-1059.62
linux-oem
linux-oem-5.10
linux-oem-5.13
linux-oem-5.14
linux-oem-5.6
linux-oracle 5.4.0-1067.72
linux-oracle-5.0
linux-oracle-5.11
linux-oracle-5.13
linux-oracle-5.3
linux-oracle-5.4 5.4.0-1067.72~18.04.1
linux-oracle-5.8
linux-raspi 5.4.0-1056.63
linux-raspi-5.4 5.4.0-1056.63~18.04.1
linux-raspi-realtime
linux-raspi2
linux-realtime
linux-riscv
linux-riscv-5.11
linux-riscv-5.8
linux-snapdragon 4.15.0-1123.132

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