CVE-2023-6606

HIGHNVD 7.17.1—Elevated

7.1

An out-of-bounds read vulnerability was found in smbCalcSize in fs/smb/client/netmisc.c in the Linux Kernel. This issue could allow a local attacker to crash the system or leak internal kernel information.

CVSS v3: 7.1
EG Score: 7.1(medium)
EPSS: 0.9%
KEV: Not listed

Published

December 8, 2023

Last Modified

November 21, 2024

References (24)

secalert@redhathttps://access.redhat.com/errata/RHSA-2024:0723
secalert@redhathttps://access.redhat.com/errata/RHSA-2024:0725
secalert@redhathttps://access.redhat.com/errata/RHSA-2024:0881
secalert@redhathttps://access.redhat.com/errata/RHSA-2024:0897
secalert@redhathttps://access.redhat.com/errata/RHSA-2024:1188
secalert@redhathttps://access.redhat.com/errata/RHSA-2024:1248
secalert@redhathttps://access.redhat.com/errata/RHSA-2024:1404
secalert@redhathttps://access.redhat.com/errata/RHSA-2024:2094
secalert@redhathttps://access.redhat.com/security/cve/CVE-2023-6606
secalert@redhathttps://bugzilla.kernel.org/show_bug.cgi?id=218218
secalert@redhathttps://bugzilla.redhat.com/show_bug.cgi?id=2253611
af854a3a-2127-422b-91ae-364da2661108https://access.redhat.com/errata/RHSA-2024:0723
af854a3a-2127-422b-91ae-364da2661108https://access.redhat.com/errata/RHSA-2024:0725
af854a3a-2127-422b-91ae-364da2661108https://access.redhat.com/errata/RHSA-2024:0881
af854a3a-2127-422b-91ae-364da2661108https://access.redhat.com/errata/RHSA-2024:0897

Patch Availability(24)

Vendor / Ecosystem	Fixed in / Patch	Released	Source
ubuntu	linux-tools-nvidia-hwe-22.04 (6.2.0.1015.17) @ jammy	2026-05-24	ubuntu
ubuntu	linux-tools-intel-iotg-edge (5.15.0.1048.54~20.04.38) @ focal	2026-05-24	ubuntu
ubuntu	linux-tools-oem-22.04c (6.1.0.1029.30) @ jammy	2026-05-24	ubuntu
ubuntu	linux-tools-azure-edge (4.15.0.1173.157) @ xenial	2026-05-24	ubuntu
ubuntu	linux-tools-azure-lts-22.04 (5.15.0.1054.50) @ jammy	2026-05-24	ubuntu
ubuntu	linux-tools-intel-iotg (5.15.0.1047.47) @ jammy	2026-05-24	ubuntu
ubuntu	linux-virtual-hwe-22.04-edge (6.5.0.15.15~22.04.8) @ jammy	2026-05-24	ubuntu
ubuntu	linux-tools-kvm (5.4.0.1105.101) @ focal	2026-05-24	ubuntu
ubuntu	linux-tools-gcp (6.2.0.1021.23~22.04.1) @ jammy	2026-05-24	ubuntu
ubuntu	linux-virtual-lts-xenial (4.4.0.250.256) @ xenial	2026-05-24	ubuntu
ubuntu	linux-tools-aws (4.4.0.1165.169) @ xenial	2026-05-24	ubuntu
ubuntu	linux-virtual-hwe-16.04-edge (4.15.0.221.5) @ xenial	2026-05-24	ubuntu
ubuntu	linux-virtual-hwe-20.04-edge (5.15.0.92.89) @ jammy	2026-05-24	ubuntu
ubuntu	linux-xilinx-zynqmp-tools-5.4.0-1036 (5.4.0-1036.40) @ focal	2026-05-24	ubuntu
ubuntu	linux-tools-nvidia-lowlatency (5.15.0.1043.43) @ jammy	2026-05-24	ubuntu
ubuntu	linux-tools-oracle-edge (5.15.0.1050.56~20.04.1) @ focal	2026-05-24	ubuntu
redhat	openshift-logging/vector-rhel9:v0.28.1-56	2024-05-01	redhat
redhat	kernel-0:4.18.0-477.51.1.el8_8	2024-03-19	redhat
redhat	kernel-0:5.14.0-362.24.1.el9_3	2024-03-12	redhat
redhat	kernel-0:4.18.0-372.95.1.el8_6	2024-03-06	redhat
redhat	kernel-0:4.18.0-513.18.1.el8_9	2024-02-20	redhat
redhat	kernel-rt-0:4.18.0-513.18.1.rt7.320.el8_9	2024-02-20	redhat
redhat	kernel-rt-0:5.14.0-284.52.1.rt14.337.el9_2	2024-02-07	redhat
redhat	kernel-0:5.14.0-284.52.1.el9_2	2024-02-07	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-125Out-of-bounds Read

All Vendor Advisories

(24)

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 7× in last 7d / 32× 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.

2026-06-13 22:59 UTCEPSS rescore
2026-06-13 22:59 UTCEPSS rescore
2026-06-12 23:11 UTCEPSS rescore
2026-06-10 22:17 UTCEPSS rescore
2026-06-09 12:49 UTCOSV refresh
2026-06-08 14:16 UTCEPSS rescore
2026-06-08 14:16 UTCEPSS rescore
2026-06-06 13:46 UTCEPSS rescore
2026-06-06 13:46 UTCEPSS rescore
2026-06-05 22:46 UTCEPSS rescore
2026-06-05 22:46 UTCEPSS rescore
2026-06-05 06:09 UTCEPSS rescore
2026-06-05 06:09 UTCEPSS rescore
2026-06-04 13:11 UTCEPSS rescore
2026-06-04 13:11 UTCEPSS rescore
2026-06-01 13:51 UTCEPSS rescore
2026-05-31 22:30 UTCEPSS rescore
2026-05-31 22:30 UTCEPSS rescore
2026-05-31 00:15 UTCEPSS rescore
2026-05-31 00:15 UTCEPSS rescore
2026-05-29 13:43 UTCEPSS rescore
2026-05-28 13:44 UTCEPSS rescore
2026-05-28 13:44 UTCEPSS rescore
2026-05-27 13:40 UTCEPSS rescore
2026-05-27 13:39 UTCEPSS rescore

Show 7 more

2026-05-26 13:43 UTCEPSS rescore
2026-05-26 13:43 UTCEPSS rescore
2026-05-26 07:18 UTCEPSS rescore
2026-05-26 07:18 UTCEPSS rescore
2026-05-24 12:32 UTCEG score recompute
2026-05-24 12:32 UTCVendor advisory
2026-05-24 12:31 UTCGHSA enrichment

Frequently asked(5)

What is CVE-2023-6606?

CVE-2023-6606 is a high vulnerability published on December 8, 2023. An out-of-bounds read vulnerability was found in smbCalcSize in fs/smb/client/netmisc.c in the Linux Kernel. This issue could allow a local attacker to crash the system or leak internal kernel information.

When was CVE-2023-6606 disclosed?

CVE-2023-6606 was first published in the National Vulnerability Database on December 8, 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-2023-6606 actively exploited?

CVE-2023-6606 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.9% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2023-6606?

CVE-2023-6606 has a CVSS v3 base score of 7.1 (NVD).

How do I remediate CVE-2023-6606?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2023-6606, 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

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CVE-2023-6606

Published

Last Modified

References (24)

Patch Availability(24)

Weakness Classification(1)

All Vendor Advisories

Data Freshness Timeline

Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2023-6606?

Same vendor

Same CWE

CVE-2023-6606

📅 Published

🔄 Last Modified

🔗 References (24)

Patch Availability(24)

Weakness Classification(1)

All Vendor Advisories

Data Freshness Timeline

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2023-6606?

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References (24)

Frequently asked(5)

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