🛡️ UBUNTU-CVE-2021-4159
⚪ Unknown ✅ No Known Exploit OSV
N/A
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

A vulnerability was found in the Linux kernel's EBPF verifier when handling internal data structures. Internal memory locations could be returned to userspace. A local attacker with the permissions to insert eBPF code to the kernel can use this to leak internal kernel memory details defeating some of the exploit mitigations in place for the kernel.

Details

Severity Unknown
CVSS Score N/A
CVSS Vector CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N
CWE N/A
Public Exploit ✅ No
Source OSV
Published 2022-08-24
Updated 2026-06-15
Modified 2026-06-03
Fix URL N/A

Affected Packages

Software From version Fixed in
linux 5.4.0-128.144
linux-aws 5.4.0-1086.93
linux-aws-5.0
linux-aws-5.3
linux-aws-5.4 5.4.0-1086.93~18.04.1
linux-aws-5.8
linux-aws-fips
linux-aws-hwe 4.15.0-1147.159~16.04.1
linux-azure 5.4.0-1094.100
linux-azure-4.15 4.15.0-1158.173
linux-azure-5.3
linux-azure-5.4 5.4.0-1094.100~18.04.1
linux-azure-5.8
linux-azure-edge
linux-azure-fips
linux-bluefield
linux-dell300x 4.15.0-1058.63
linux-fips
linux-gcp 5.4.0-1090.98
linux-gcp-4.15 4.15.0-1142.158
linux-gcp-5.3
linux-gcp-5.4 5.4.0-1092.101~18.04.1
linux-gcp-5.8
linux-gcp-fips
linux-gke 5.4.0-1084.90
linux-gke-4.15
linux-gke-5.4
linux-gkeop 5.4.0-1054.57
linux-gkeop-5.4
linux-hwe
linux-hwe-5.11
linux-hwe-5.4 5.4.0-128.144~18.04.1
linux-hwe-5.8
linux-hwe-edge
linux-ibm 5.4.0-1034.38
linux-ibm-5.4 5.4.0-1034.38~18.04.1
linux-intel-5.13
linux-intel-iot-realtime
linux-iot 5.4.0-1005.7
linux-kvm 5.4.0-1076.81
linux-oem
linux-oem-5.10
linux-oem-5.13
linux-oem-5.6
linux-oracle 5.4.0-1084.92
linux-oracle-5.0
linux-oracle-5.3
linux-oracle-5.4 5.4.0-1084.92~18.04.1
linux-oracle-5.8
linux-raspi 5.4.0-1071.81
linux-raspi-5.4 5.4.0-1071.81~18.04.1
linux-raspi-realtime
linux-raspi2
linux-realtime
linux-riscv
linux-riscv-5.8
linux-snapdragon 4.15.0-1143.153

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