Kernel: out-of-bounds read vulnerability in smbcalcsize
Summary
| CVE | CVE-2023-6606 |
|---|---|
| State | PUBLISHED |
| Assigner | redhat |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2023-12-08 17:15:07 UTC |
| Updated | 2026-10-14 23:17:19 UTC |
| Description | 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. |
Risk And Classification
Primary CVSS: v3.1 7.1 HIGH from [email protected]
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
EPSS: 0.005260000 probability, percentile 0.431800000 (date 2026-10-14)
Problem Types: CWE-125 | CWE-125 Out-of-bounds Read
| Version | Source | Type | Score | Severity | Vector |
|---|---|---|---|---|---|
| 3.1 | [email protected] | Primary | 7.1 | HIGH | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H |
| 3.1 | [email protected] | Secondary | 7.1 | HIGH | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H |
| 3.1 | CNA | CVSS | 7.1 | HIGH | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H |
CVSS v3.1 Breakdown
Attack Vector
LocalAttack Complexity
LowPrivileges Required
LowUser Interaction
NoneScope
UnchangedConfidentiality
HighIntegrity
NoneAvailability
HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
NVD Known Affected Configurations (CPE 2.3)
| Type | Vendor | Product | Version | Update | Edition | Language |
|---|---|---|---|---|---|---|
| Operating System | Linux | Linux Kernel | All | All | All | All |
| Operating System | Linux | Linux Kernel | 6.4 | - | All | All |
| Operating System | Linux | Linux Kernel | 6.4 | rc4 | All | All |
| Operating System | Linux | Linux Kernel | 6.4 | rc5 | All | All |
| Operating System | Linux | Linux Kernel | 6.4 | rc6 | All | All |
| Operating System | Linux | Linux Kernel | 6.4 | rc7 | All | All |
| Operating System | Linux | Linux Kernel | 6.7 | rc1 | All | All |
| Operating System | Linux | Linux Kernel | 6.7 | rc2 | All | All |
| Operating System | Linux | Linux Kernel | 6.7 | rc3 | All | All |
| Operating System | Linux | Linux Kernel | 6.7 | rc4 | All | All |
| Operating System | Linux | Linux Kernel | 6.7 | rc5 | All | All |
| Operating System | Linux | Linux Kernel | 6.7 | rc6 | All | All |
| Operating System | Redhat | Enterprise Linux | 8.0 | All | All | All |
| Operating System | Redhat | Enterprise Linux | 9.0 | All | All | All |
| Operating System | Redhat | Enterprise Linux Eus | 9.2 | All | All | All |
| Operating System | Redhat | Enterprise Linux Eus | 9.4 | All | All | All |
| Operating System | Redhat | Enterprise Linux Server Aus | 9.2 | All | All | All |
| Operating System | Redhat | Enterprise Linux Server Aus | 9.4 | All | All | All |
| Operating System | Redhat | Enterprise Linux Server For Power Little Endian Update Services For Sap Solutions | 9.2 | All | All | All |
| Operating System | Redhat | Enterprise Linux Server For Power Little Endian Update Services For Sap Solutions | 9.2_ppc64le | All | All | All |
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|---|---|---|---|
| CNA | Red Hat | Red Hat Enterprise Linux 8 | unaffected 0:4.18.0-513.18.1.rt7.320.el8_9 * rpm | Not specified |
| CNA | Red Hat | Red Hat Enterprise Linux 8 | unaffected 0:4.18.0-513.18.1.el8_9 * rpm | Not specified |
| CNA | Red Hat | Red Hat Enterprise Linux 8.6 Extended Update Support | unaffected 0:4.18.0-372.95.1.el8_6 * rpm | Not specified |
| CNA | Red Hat | Red Hat Enterprise Linux 8.8 Extended Update Support | unaffected 0:4.18.0-477.51.1.el8_8 * rpm | Not specified |
| CNA | Red Hat | Red Hat Enterprise Linux 9 | unaffected 0:5.14.0-362.24.1.el9_3 * rpm | Not specified |
| CNA | Red Hat | Red Hat Enterprise Linux 9 | unaffected 0:5.14.0-362.24.1.el9_3 * rpm | Not specified |
| CNA | Red Hat | Red Hat Enterprise Linux 9.2 Extended Update Support | unaffected 0:5.14.0-284.52.1.el9_2 * rpm | Not specified |
| CNA | Red Hat | Red Hat Enterprise Linux 9.2 Extended Update Support | unaffected 0:5.14.0-284.52.1.rt14.337.el9_2 * rpm | Not specified |
| CNA | Red Hat | Red Hat Virtualization 4 For Red Hat Enterprise Linux 8 | unaffected 0:4.18.0-372.95.1.el8_6 * rpm | Not specified |
| CNA | Red Hat | RHOL-5.8-RHEL-9 | unaffected v5.8.6-22 * rpm | Not specified |
| CNA | Red Hat | RHOL-5.8-RHEL-9 | unaffected v5.8.6-11 * rpm | Not specified |
| CNA | Red Hat | RHOL-5.8-RHEL-9 | unaffected v6.8.1-407 * rpm | Not specified |
| CNA | Red Hat | RHOL-5.8-RHEL-9 | unaffected v5.8.6-19 * rpm | Not specified |
| CNA | Red Hat | RHOL-5.8-RHEL-9 | unaffected v1.0.0-479 * rpm | Not specified |
| CNA | Red Hat | RHOL-5.8-RHEL-9 | unaffected v5.8.6-7 * rpm | Not specified |
| CNA | Red Hat | RHOL-5.8-RHEL-9 | unaffected v0.4.0-247 * rpm | Not specified |
| CNA | Red Hat | RHOL-5.8-RHEL-9 | unaffected v5.8.6-5 * rpm | Not specified |
| CNA | Red Hat | RHOL-5.8-RHEL-9 | unaffected v1.1.0-227 * rpm | Not specified |
| CNA | Red Hat | RHOL-5.8-RHEL-9 | unaffected v5.8.1-470 * rpm | Not specified |
| CNA | Red Hat | RHOL-5.8-RHEL-9 | unaffected v2.9.6-14 * rpm | Not specified |
| CNA | Red Hat | RHOL-5.8-RHEL-9 | unaffected v5.8.6-2 * rpm | Not specified |
| CNA | Red Hat | RHOL-5.8-RHEL-9 | unaffected v5.8.6-24 * rpm | Not specified |
| CNA | Red Hat | RHOL-5.8-RHEL-9 | unaffected v5.8.6-10 * rpm | Not specified |
| CNA | Red Hat | RHOL-5.8-RHEL-9 | unaffected v0.1.0-525 * rpm | Not specified |
| CNA | Red Hat | RHOL-5.8-RHEL-9 | unaffected v0.1.0-224 * rpm | Not specified |
| CNA | Red Hat | RHOL-5.8-RHEL-9 | unaffected v0.28.1-56 * rpm | Not specified |
| CNA | Red Hat | Red Hat Enterprise Linux 6 | Not specified | Not specified |
| CNA | Red Hat | Red Hat Enterprise Linux 7 | Not specified | Not specified |
| CNA | Red Hat | Red Hat Enterprise Linux 7 | Not specified | Not specified |
| CNA | Red Hat | Red Hat Enterprise Linux 9 | Not specified | Not specified |
| ADP | Siemens | RUGGEDCOM RST2428P | unaffected * custom | Not specified |
| ADP | Siemens | SCALANCE XC-300/XR-300/XC-400/XR-500WG/XR-500 Family | unaffected * custom | Not specified |
| ADP | Siemens | SCALANCE XCM-/XRM-/XCH-/XRH-300 Family | unaffected * custom | Not specified |
| ADP | Siemens | SIMATIC S7-1500 TM MFP - GNU/Linux Subsystem | affected V1.1 custom | Not specified |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| access.redhat.com/errata/RHSA-2024:1404 | af854a3a-2127-422b-91ae-364da2661108 | access.redhat.com | Third Party Advisory |
| access.redhat.com/security/cve/CVE-2023-6606 | af854a3a-2127-422b-91ae-364da2661108 | access.redhat.com | Third Party Advisory |
| access.redhat.com/errata/RHSA-2024:2094 | af854a3a-2127-422b-91ae-364da2661108 | access.redhat.com | Third Party Advisory |
| bugzilla.kernel.org/show_bug.cgi | af854a3a-2127-422b-91ae-364da2661108 | bugzilla.kernel.org | Exploit, Issue Tracking |
| access.redhat.com/errata/RHSA-2024:1188 | af854a3a-2127-422b-91ae-364da2661108 | access.redhat.com | Third Party Advisory |
| lists.debian.org/debian-lts-announce/2024/06/msg00016.html | af854a3a-2127-422b-91ae-364da2661108 | lists.debian.org | |
| access.redhat.com/errata/RHSA-2024:0723 | af854a3a-2127-422b-91ae-364da2661108 | access.redhat.com | Third Party Advisory |
| access.redhat.com/errata/RHSA-2024:0725 | af854a3a-2127-422b-91ae-364da2661108 | access.redhat.com | Third Party Advisory |
| access.redhat.com/errata/RHSA-2024:0897 | af854a3a-2127-422b-91ae-364da2661108 | access.redhat.com | Third Party Advisory |
| access.redhat.com/errata/RHSA-2024:1248 | af854a3a-2127-422b-91ae-364da2661108 | access.redhat.com | Third Party Advisory |
| bugzilla.redhat.com/show_bug.cgi | af854a3a-2127-422b-91ae-364da2661108 | bugzilla.redhat.com | Exploit, Issue Tracking |
| cert-portal.siemens.com/productcert/html/ssa-613116.html | 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e | cert-portal.siemens.com | |
| cert-portal.siemens.com/productcert/html/ssa-794697.html | 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e | cert-portal.siemens.com | |
| access.redhat.com/errata/RHSA-2024:0881 | af854a3a-2127-422b-91ae-364da2661108 | access.redhat.com | Third Party Advisory |
| lists.debian.org/debian-lts-announce/2024/01/msg00004.html | af854a3a-2127-422b-91ae-364da2661108 | lists.debian.org | |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
No vendor comments have been submitted for this CVE.
Additional Advisory Data
| Source | Time | Event |
|---|---|---|
| CNA | 2023-12-08T00:00:00.000Z | Reported to Red Hat. |
| CNA | 2023-12-04T00:00:00.000Z | Made public. |
Workarounds
CNA: To mitigate this issue, prevent module cifs from being loaded. Please see https://access.redhat.com/solutions/41278 for how to blacklist a kernel module to prevent it from loading automatically.
Legacy QID Mappings
- 161372 Oracle Enterprise Linux Security Update for kernel (ELSA-2024-12169)
- 161402 Oracle Enterprise Linux Security Update for kernel (ELSA-2024-0897)
- 161417 Oracle Enterprise Linux Security Update for kernel (ELSA-2024-1248)
- 200065 Ubuntu Security Notification for Linux kernel (AWS) Vulnerabilities (USN-6603-1)
- 200067 Ubuntu Security Notification for Linux kernel Vulnerabilities (USN-6602-1)
- 200068 Ubuntu Security Notification for Linux kernel Vulnerabilities (USN-6608-1)
- 200070 Ubuntu Security Notification for Linux kernel (OEM) Vulnerabilities (USN-6606-1)
- 200072 Ubuntu Security Notification for Linux kernel Vulnerabilities (USN-6604-1)
- 200074 Ubuntu Security Notification for Linux kernel (Azure) Vulnerabilities (USN-6607-1)
- 200076 Ubuntu Security Notification for Linux kernel Vulnerabilities (USN-6609-1)
- 200077 Ubuntu Security Notification for Linux kernel Vulnerabilities (USN-6605-1)
- 200079 Ubuntu Security Notification for Linux kernel (Azure) Vulnerabilities (USN-6604-2)
- 200080 Ubuntu Security Notification for Linux kernel (KVM) Vulnerabilities (USN-6605-2)
- 200088 Ubuntu Security Notification for Linux kernel (NVIDIA) Vulnerabilities (USN-6609-2)
- 200096 Ubuntu Security Notification for Linux kernel (Oracle) Vulnerabilities (USN-6609-3)
- 200103 Ubuntu Security Notification for Linux kernel (Intel IoTG) Vulnerabilities (USN-6628-1)
- 200112 Ubuntu Security Notification for Linux kernel (NVIDIA) Vulnerabilities (USN-6608-2)
- 200113 Ubuntu Security Notification for Linux kernel (GCP) Vulnerabilities (USN-6635-1)
- 200118 Ubuntu Security Notification for Linux kernel (Intel IoTG) Vulnerabilities (USN-6628-2)
- 242887 Red Hat Update for kernel-rt (RHSA-2024:0725)
- 242908 Red Hat Update for kernel (RHSA-2024:0723)
- 242939 Red Hat Update for kernel (RHSA-2024:0897)
- 242983 Red Hat Update for kernel-rt (RHSA-2024:0881)
- 243041 Red Hat Update for kernel security (RHSA-2024:1188)
- 243052 Red Hat Update for kernel (RHSA-2024:1248)
- 243087 Red Hat Update for kernel (RHSA-2024:1404)
- 357014 Amazon Linux Security Advisory for kernel : ALAS2-2024-2418
- 357041 Amazon Linux Security Advisory for kernel : ALAS2023-2024-488
- 357044 Amazon Linux Security Advisory for kernel : ALAS-2024-1906
- 357050 Amazon Linux Security Advisory for kernel : ALAS2KERNEL-5.15-2024-034
- 357053 Amazon Linux Security Advisory for kernel : ALAS2KERNEL-5.4-2024-058
- 357054 Amazon Linux Security Advisory for kernel : ALAS2KERNEL-5.10-2024-046
- 357088 Amazon Linux Security Advisory for kernel-livepatch : ALAS2LIVEPATCH-2024-164
- 357092 Amazon Linux Security Advisory for kernel-livepatch : ALAS2LIVEPATCH-2024-162
- 357100 Amazon Linux Security Advisory for kernel-livepatch : ALAS2LIVEPATCH-2024-163
- 357109 Amazon Linux Security Advisory for kernel-livepatch : ALAS2LIVEPATCH-2024-161
- 357314 Amazon Linux Security Advisory for kernel-livepatch : ALAS2LIVEPATCH-2024-167
- 357318 Amazon Linux Security Advisory for kernel-livepatch : ALAS2LIVEPATCH-2024-169
- 6000429 Debian Security Update for linux (DLA 3710-1)
- 6140389 AWS Bottlerocket Security Update for kernel (GHSA-xf23-qjp2-xxhg)
- 673321 EulerOS Security Update for kernel (EulerOS-SA-2024-1337)
- 673547 EulerOS Security Update for kernel (EulerOS-SA-2024-1315)
- 673714 EulerOS Security Update for kernel (EulerOS-SA-2024-1196)
- 673723 EulerOS Security Update for kernel (EulerOS-SA-2024-1237)
- 673902 EulerOS Security Update for kernel (EulerOS-SA-2024-1176)
- 673992 EulerOS Security Update for kernel (EulerOS-SA-2024-1215)
- 673995 EulerOS Security Update for kernel (EulerOS-SA-2024-1275)
- 755604 SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2024:0129-1)
- 755605 SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2024:0120-1)
- 755606 SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2024:0117-1)
- 755607 SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2024:0115-1)
- 941584 AlmaLinux Security Update for kernel (ALSA-2024:0897)