CVE-2023-2163

CRITICALNVD 10.010.0—

10.0

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 v3: 10.0
EG Score: 10.0(medium)
EPSS: 41.8%
KEV: Not listed

Published

September 20, 2023

Last Modified

November 21, 2024

Advisory Details (2)

Auto-updated May 23, 2026

No patch confirmed yet.

generic

bpf: Fix incorrect verifier pruning due to missing register precision taints - kernel/git/torvalds/linux.git - Linux kernel source tree

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=71b547f561247897a0a14f3082730156c0533fed

generic

Blog: A deep dive into CVE-2023-2163: How We found and Fixed an eBPF Linux Kernel Vulnerability

https://bughunters.google.com/blog/6303226026131456/a-deep-dive-into-cve-2023-2163-how-we-found-and-fixed-an-ebpf-linux-kernel-vulnerability

Patch Availability(23)

Vendor / Ecosystem	Fixed in / Patch	Released	Source
ubuntu	linux-virtual-hwe-20.04-edge (5.15.0.79.76) @ jammy	2026-05-24	ubuntu
ubuntu	linux-tools-azure-lts-20.04 (5.4.0.1115.108) @ focal	2026-05-24	ubuntu
ubuntu	linux-tools-oem-22.04b (6.0.0.1021.21) @ jammy	2026-05-24	ubuntu
ubuntu	linux-tools-azure-fde-edge (5.15.0.1043.50~20.04.1.22) @ focal	2026-05-24	ubuntu
ubuntu	linux-tools-azure-lts-22.04 (5.15.0.1045.41) @ jammy	2026-05-24	ubuntu
ubuntu	linux-tools-bluefield (5.4.0.1070.65) @ focal	2026-05-24	ubuntu
ubuntu	linux-tools-gkeop-5.15 (5.15.0.1025.24) @ jammy	2026-05-24	ubuntu
ubuntu	linux-virtual-hwe-18.04-edge (5.4.0.162.159) @ focal	2026-05-24	ubuntu
ubuntu	linux-tools-ibm-edge (5.4.0.1056.67) @ bionic	2026-05-24	ubuntu
ubuntu	linux-xilinx-zynqmp-tools-5.4.0-1029 (5.4.0-1029.33) @ focal	2026-05-24	ubuntu
redhat	kernel-rt-0:5.14.0-70.93.1.rt21.165.el9_0	2024-03-13	redhat
redhat	kpatch-patch	2024-03-12	redhat
redhat	kernel-0:5.14.0-70.93.2.el9_0	2024-03-12	redhat
redhat	kernel-rt-0:4.18.0-305.120.1.rt7.196.el8_4	2024-01-30	redhat
redhat	kernel-0:4.18.0-305.120.1.el8_4	2024-01-30	redhat
redhat	kernel-0:4.18.0-477.43.1.el8_8	2024-01-30	redhat
redhat	kernel-0:4.18.0-372.87.1.el8_6	2024-01-25	redhat
redhat	kernel-0:4.18.0-193.120.1.el8_2	2024-01-25	redhat
redhat	kernel-0:5.14.0-284.48.1.el9_2	2024-01-25	redhat
redhat	kernel-rt-0:5.14.0-284.48.1.rt14.333.el9_2	2024-01-25	redhat
redhat	kernel-rt-0:4.18.0-193.120.1.rt13.171.el8_2	2024-01-25	redhat
redhat	kernel-0:4.18.0-513.9.1.el8_9	2023-11-28	redhat
redhat	kernel-rt-0:4.18.0-513.9.1.rt7.311.el8_9	2023-11-28	redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

CWE-682Incorrect Calculation

All Vendor Advisories

(25)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 9× in last 7d / 9× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-05-27 13:39 UTCepss_batch
2026-05-27 13:39 UTCepss_batch
2026-05-26 13:43 UTCepss_batch
2026-05-26 13:43 UTCepss_batch
2026-05-26 07:18 UTCepss_batch
2026-05-26 07:18 UTCepss_batch
2026-05-26 07:17 UTCepss_batch
2026-05-24 17:23 UTCEG score recompute
2026-05-24 17:23 UTCVendor advisory

Frequently asked(5)

What is CVE-2023-2163?

CVE-2023-2163 is a critical vulnerability published on September 20, 2023. 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.

When was CVE-2023-2163 disclosed?

CVE-2023-2163 was first published in the National Vulnerability Database on September 20, 2023, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2023-2163 actively exploited?

CVE-2023-2163 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 41.8% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2023-2163?

CVE-2023-2163 has a CVSS v3 base score of 10.0 (NVD).

How do I remediate CVE-2023-2163?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2023-2163, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2023-2163

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