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High 7.1Published Dec 8, 2023
CVE-2023-6606Kernel: out-of-bounds read vulnerability in smbcalcsize
Updated under an hour ago ()
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It affects Red Hat Enterprise Linux 8 and 11 other products. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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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
- 7.1 HIGH (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
- Weakness (CWE)
- CWE-125
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- redhat
- NVD analysis
- Modified
- Record last updated
- Oct 14, 2026
- First seen by InfoSec Signals
- Oct 14, 2026
Affected products
Red Hat Red Hat Enterprise Linux 8 redhat:enterprise_linux | from 0:4.18.0-513.18.1.rt7.320.el8_9 not affected | CNA record |
Red Hat Red Hat Enterprise Linux 8.6 Extended Update Support redhat:rhel_eus | from 0:4.18.0-372.95.1.el8_6 not affected | CNA record |
Red Hat Red Hat Enterprise Linux 8.6 Extended Update Support redhat:rhev_hypervisor | from 0:4.18.0-372.95.1.el8_6 not affected | CNA record |
Red Hat RHOL-5.8-RHEL-9 redhat:logging | from v5.8.6-22 not affected | CNA record |
Siemens RUGGEDCOM RST2428P siemens:ruggedcom_rst2428p (from the name) | all versions not affected | CISA ADP |
Siemens SCALANCE XC-300/XR-300/XC-400/XR-500WG/XR-500 family siemens:scalance_xc_300_xr_300_xc_400_xr_500wg_xr_500_family (from the name) | all versions not affected | CISA ADP |
Siemens SCALANCE XCM-/XRM-/XCH-/XRH-300 family siemens:scalance_xcm_xrm_xch_xrh_300_family (from the name) | all versions not affected | CISA ADP |
Siemens SIMATIC S7-1500 TM MFP - GNU/Linux subsystem siemens:simatic_s7_1500_tm_mfp_gnu_linux_subsystem (from the name) | before V1.1 | CISA ADP |
linux linux_kernel linux:linux_kernel | from 6.4.1 before 6.7; 6.4; 6.4; 6.4; 6.4; 6.4; 6.7; 6.7; and 4 more ranges | NVD |
redhat enterprise_linux redhat:enterprise_linux | 8.0; 9.0 | NVD |
redhat enterprise_linux_eus redhat:enterprise_linux_eus | 9.2; 9.4 | NVD |
redhat enterprise_linux_server_aus redhat:enterprise_linux_server_aus | 9.2; 9.4 | NVD |
redhat enterprise_linux_server_for_power_little_endian_update_services_for_sap_solutions redhat:enterprise_linux_server_for_power_little_endian_update_services_for_sap_solutions | 9.2; 9.2_ppc64le | NVD |
References
- https://access.redhat.com/errata/RHSA-2024:0723vendor-advisory, x-refsource-redhat, third-party-advisory
- https://access.redhat.com/errata/RHSA-2024:0725vendor-advisory, x-refsource-redhat, third-party-advisory
- https://access.redhat.com/errata/RHSA-2024:0881vendor-advisory, x-refsource-redhat, third-party-advisory
- https://access.redhat.com/errata/RHSA-2024:0897vendor-advisory, x-refsource-redhat, third-party-advisory
- https://access.redhat.com/errata/RHSA-2024:1188vendor-advisory, x-refsource-redhat, third-party-advisory
- https://access.redhat.com/errata/RHSA-2024:1248vendor-advisory, x-refsource-redhat, third-party-advisory
- https://access.redhat.com/errata/RHSA-2024:1404vendor-advisory, x-refsource-redhat, third-party-advisory
- https://access.redhat.com/errata/RHSA-2024:2094vendor-advisory, x-refsource-redhat, third-party-advisory
- https://access.redhat.com/security/cve/CVE-2023-6606vdb-entry, x-refsource-redhat, third-party-advisory
- https://bugzilla.kernel.org/show_bug.cgi?id=218218exploit, issue-tracking
- https://bugzilla.redhat.com/show_bug.cgi?id=2253611issue-tracking, x-refsource-redhat, exploit
- https://lists.debian.org/debian-lts-announce/2024/01/msg00004.html
- https://lists.debian.org/debian-lts-announce/2024/06/msg00016.html
- https://cert-portal.siemens.com/productcert/html/ssa-613116.html
- https://cert-portal.siemens.com/productcert/html/ssa-794697.html
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.