CVE-2023-2163

CRITICALNVD 10.010.0—
EchelonGraph scoreMEDIUM confidence

This critical-severity CVE scores 10.0 under NVD CVSS v3. EPSS exploit probability: 3.5%, top 12% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, nvd
10.0EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 4%CVSS: 10.0Exploit: None knownExposed: 0

A fix is available — apply it.

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)
EG Risk
61(Track)
EG Risk 61/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity100% × 45%
Exploitation4% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
4%
EPSS %ILE
88%
KEV
Not listed

Published

September 20, 2023

Last Modified

November 21, 2024

Advisory Details (2)

Auto-updated Jul 25, 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

Vendor Advisories for CVE-2023-2163(7)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Patch Availability(23)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntulinux-virtual-hwe-20.04-edge (5.15.0.79.76) @ jammy2026-05-24ubuntu
ubuntulinux-tools-azure-lts-20.04 (5.4.0.1115.108) @ focal2026-05-24ubuntu
ubuntulinux-tools-oem-22.04b (6.0.0.1021.21) @ jammy2026-05-24ubuntu
ubuntulinux-tools-azure-fde-edge (5.15.0.1043.50~20.04.1.22) @ focal2026-05-24ubuntu
ubuntulinux-tools-azure-lts-22.04 (5.15.0.1045.41) @ jammy2026-05-24ubuntu
ubuntulinux-tools-bluefield (5.4.0.1070.65) @ focal2026-05-24ubuntu
ubuntulinux-tools-gkeop-5.15 (5.15.0.1025.24) @ jammy2026-05-24ubuntu
ubuntulinux-virtual-hwe-18.04-edge (5.4.0.162.159) @ focal2026-05-24ubuntu
ubuntulinux-tools-ibm-edge (5.4.0.1056.67) @ bionic2026-05-24ubuntu
ubuntulinux-xilinx-zynqmp-tools-5.4.0-1029 (5.4.0-1029.33) @ focal2026-05-24ubuntu
redhatkernel-rt-0:5.14.0-70.93.1.rt21.165.el9_02024-03-13redhat
redhatkpatch-patch2024-03-12redhat
redhatkernel-0:5.14.0-70.93.2.el9_02024-03-12redhat
redhatkernel-rt-0:4.18.0-305.120.1.rt7.196.el8_42024-01-30redhat
redhatkernel-0:4.18.0-305.120.1.el8_42024-01-30redhat
redhatkernel-0:4.18.0-477.43.1.el8_82024-01-30redhat
redhatkernel-0:4.18.0-372.87.1.el8_62024-01-25redhat
redhatkernel-0:4.18.0-193.120.1.el8_22024-01-25redhat
redhatkernel-0:5.14.0-284.48.1.el9_22024-01-25redhat
redhatkernel-rt-0:5.14.0-284.48.1.rt14.333.el9_22024-01-25redhat
redhatkernel-rt-0:4.18.0-193.120.1.rt13.171.el8_22024-01-25redhat
redhatkernel-0:4.18.0-513.9.1.el8_92023-11-28redhat
redhatkernel-rt-0:4.18.0-513.9.1.rt7.311.el8_92023-11-28redhat

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.

Additional Vendor Advisories

(18)

Vendors that published advisories for this CVE beyond the curated set above. Broader coverage but minimal per-row detail — click through for the original advisory.

Data Freshness Timeline

(refreshed 12× in last 7d / 47× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 110 total refreshes for this CVE.

  1. 2026-07-26 14:52 UTCEPSS rescore
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  1. 2026-07-13 22:28 UTCEPSS rescore
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  23. 2026-06-27 09:34 UTCOSV refresh
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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 4% probability of exploitation in the next 30 days, which ranks it in the top 11.9% of all scored CVEs.
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

Explore the affected products and dependency analysis for CVE-2023-2163

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