Home/CVE/An out-of-bounds read vulnerability was found in smbCalcSize in fs/smb/client/netmisc.c in the Linux Kernel. This issue
CVE

CVE-2023-6606

An out-of-bounds read vulnerability was found in smbCalcSize in fs/smb/client/netmisc.c in the Linux Kernel. This issue

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.

HIGH · CVSS 7.1 EPSS 9e-05
Act now
  • Public exploit or PoC is available
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-125Out-of-bounds Read
CWE-125Out-of-bounds Read
▤

Affected Products & Versions

6
linux kernel>= 6.4.1 and < 6.7
linux kernelall versions
redhat enterprise linuxall versions
redhat enterprise linux eusall versions
redhat enterprise linux server ausall versions
redhat enterprise linux server for power little endian update services for sap solutionsall versions
⚠

Public Exploits & PoCs

2
pocbugzilla.kernel.org · show_bug.cgi?id=218218bugzilla.kernel.org
pocbugzilla.redhat.com · show_bug.cgi?id=2253611bugzilla.redhat.com
▣

Scoring & Timeline

7.1
HIGH · CVSS v3.1 · secalert@redhat.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD08 Dec 2023 · 05:15 PM
CVSS VectorCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
SSVC triage · cisa-vulnrichment
Exploitation
poc
Automatable
no
Technical impact
partial
SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.
⚑

Vendor Advisories

30
rhsaRHSA-2024:1404Moderate
msrcCVE-2023-6606
siemens-csafSSA-613116
suse-csafSUSE-SU-2025:0834-1
suse-csafopenSUSE-SU-2024:13547-1
🔗

References & Sources

7
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://access.redhat.com/errata/RHSA-2024:0723Third Party Advisory
https://access.redhat.com/errata/RHSA-2024:0725Third Party Advisory
https://access.redhat.com/errata/RHSA-2024:0881Third Party Advisory
https://access.redhat.com/errata/RHSA-2024:0897Third Party Advisory
https://access.redhat.com/security/cve/CVE-2023-6606Third Party Advisory
https://lists.debian.org/debian-lts-announce/2024/01/msg00004.html
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