CVE-2023-2163
Vulnerability Summary
Timeline
Description
Incorrect verifier pruning in BPF in Linux Kernel >=5.4 leads to unsafe code paths being incorrectly marked as safe, resulting in arbitrary read/write in kernel memory, lateral privilege escalation, and container escape.
CVSS Metrics
- v3.1•CRITICAL•Score: 10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N
- v3.1•HIGH•Score: 8.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
EPSS Trends
Current EPSS score: 3.67%• Percentile: 89%
Techniques & Countermeasures
- CWE-682•Incorrect Calculation
The product performs a calculation that generates incorrect or unintended results that are later used in security-critical decisions or resource management.
Affected Systems
- debian•linux
< 5.10.179-1 | < 6.1.27-1 | < 6.1.27-1 | < 6.1.27-1
- ubuntu•linux
< 5.4.0-162.179 | < 5.15.0-79.86
- ubuntu•linux-allwinner-5.19
all
- ubuntu•linux-aws
< 5.4.0-1109.118 | < 5.15.0-1042.47
- ubuntu•linux-aws-5.0
all
- ubuntu•linux-aws-5.11
all
- ubuntu•linux-aws-5.13
all
- ubuntu•linux-aws-5.15
< 5.15.0-1041.46~20.04.1
- ubuntu•linux-aws-5.19
all
- ubuntu•linux-aws-5.3
all
- ubuntu•linux-aws-5.4
< 5.4.0-1109.118~18.04.1
- ubuntu•linux-aws-5.8
all
- ubuntu•linux-aws-6.2
< 6.2.0-1007.7~22.04.1
- ubuntu•linux-aws-fips
< 5.4.0-1109.118+fips1 | all
- ubuntu•linux-azure
all | < 5.4.0-1115.122 | < 5.15.0-1045.52
- ubuntu•linux-azure-5.11
all
- ubuntu•linux-azure-5.13
all
- ubuntu•linux-azure-5.15
< 5.15.0-1045.52~20.04.1
- ubuntu•linux-azure-5.19
all
- ubuntu•linux-azure-5.3
all
- ubuntu•linux-azure-5.4
< 5.4.0-1115.122~18.04.1
- ubuntu•linux-azure-5.8
all
- ubuntu•linux-azure-edge
all
- ubuntu•linux-azure-fde
all | < 5.15.0-1044.51.1
- ubuntu•linux-azure-fde-5.19
all
- ubuntu•linux-azure-fips
< 5.4.0-1115.122+fips1 | all
- ubuntu•linux-bluefield
all | < 5.4.0-1070.76 | < 5.15.0-1022.24
- ubuntu•linux-fips
< 5.4.0-1084.93 | all
- ubuntu•linux-gcp
all | < 5.4.0-1112.121 | < 5.15.0-1039.47
- ubuntu•linux-gcp-5.11
all
- ubuntu•linux-gcp-5.13
all
- ubuntu•linux-gcp-5.15
< 5.15.0-1039.47~20.04.1
- ubuntu•linux-gcp-5.19
all
- ubuntu•linux-gcp-5.3
all
- ubuntu•linux-gcp-5.4
< 5.4.0-1112.121~18.04.1
- ubuntu•linux-gcp-5.8
all
- ubuntu•linux-gcp-fips
< 5.4.0-1112.121+fips1 | all
- ubuntu•linux-gke
all | < 5.15.0-1039.44
- ubuntu•linux-gke-4.15
all
- ubuntu•linux-gke-5.15
< 5.15.0-1039.44~20.04.1
- ubuntu•linux-gke-5.4
all
- ubuntu•linux-gkeop
< 5.4.0-1076.80 | < 5.15.0-1025.30
- ubuntu•linux-gkeop-5.15
< 5.15.0-1025.30~20.04.1
- ubuntu•linux-gkeop-5.4
all
- ubuntu•linux-hwe
all
- ubuntu•linux-hwe-5.11
all
- ubuntu•linux-hwe-5.13
all
- ubuntu•linux-hwe-5.15
< 5.15.0-79.86~20.04.2
- ubuntu•linux-hwe-5.19
all
- ubuntu•linux-hwe-5.4
< 5.4.0-162.179~18.04.1
Showing first 50 affected entries in server-rendered view.
References (16)
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=71b547f561247897a0a14f3082730156c0533fed
- https://bughunters.google.com/blog/6303226026131456/a-deep-dive-into-cve-2023-2163-how-we-found-and-fixed-an-ebpf-linux-kernel-vulnerability
- https://ubuntu.com/security/CVE-2023-2163
- https://git.kernel.org/linus/71b547f561247897a0a14f3082730156c0533fed
- https://ubuntu.com/security/notices/USN-6300-1
- https://ubuntu.com/security/notices/USN-6311-1
- https://ubuntu.com/security/notices/USN-6332-1
- https://ubuntu.com/security/notices/USN-6340-1
- https://ubuntu.com/security/notices/USN-6347-1
- https://ubuntu.com/security/notices/USN-6349-1
- https://ubuntu.com/security/notices/USN-6340-2
- https://ubuntu.com/security/notices/USN-6357-1
- https://ubuntu.com/security/notices/USN-6385-1
- https://ubuntu.com/security/notices/USN-6397-1
- https://www.cve.org/CVERecord?id=CVE-2023-2163
- https://security-tracker.debian.org/tracker/CVE-2023-2163