Out-of-bounds Read in Linux Kernel
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 could allow a local attacker to crash the system or leak internal kernel information.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.1 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H.
EPSS exploit prediction
EPSS: 0.005 (42.5th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 42nd percentile — 42.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000
Affected products
- Linux Kernel — versions 6.4, 6.7
- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 7
- Red Hat Enterprise Linux 8 — versions 0:4.18.0-513.18.1.rt7.320.el8_9, 0:4.18.0-513.18.1.el8_9
- Red Hat Enterprise Linux 8.6 Extended Update Support — versions 0:4.18.0-372.95.1.el8_6
- Red Hat Enterprise Linux 8.8 Extended Update Support — versions 0:4.18.0-477.51.1.el8_8
- Red Hat Enterprise Linux 9 — versions 0:5.14.0-362.24.1.el9_3
- Red Hat Enterprise Linux 9.2 Extended Update Support — versions 0:5.14.0-284.52.1.el9_2, 0:5.14.0-284.52.1.rt14.337.el9_2
- Red Hat Virtualization 4 For Enterprise Linux 8 — versions 0:4.18.0-372.95.1.el8_6
- Red Hat Rhol-5.8-Rhel-9 — versions v5.8.6-22, v5.8.6-11, v6.8.1-407
Weakness classification (CWE)
Public proof-of-concept exploits
References
- access.redhat.com/errata/RHSA-2024:0723 (vendor-advisory, Third Party Advisory)
- access.redhat.com/errata/RHSA-2024:0725 (vendor-advisory, Third Party Advisory)
- access.redhat.com/errata/RHSA-2024:0881 (vendor-advisory, Third Party Advisory)
- access.redhat.com/errata/RHSA-2024:0897 (vendor-advisory, Third Party Advisory)
- access.redhat.com/errata/RHSA-2024:1188 (vendor-advisory, Third Party Advisory)
- access.redhat.com/errata/RHSA-2024:1248 (vendor-advisory, Third Party Advisory)
- access.redhat.com/errata/RHSA-2024:1404 (vendor-advisory, Third Party Advisory)
- access.redhat.com/errata/RHSA-2024:2094 (vendor-advisory, Third Party Advisory)
- access.redhat.com/security/cve/CVE-2023-6606 (Third Party Advisory, vdb-entry)
- bugzilla.kernel.org/show_bug.cgi (Exploit, Issue Tracking)
Frequently asked questions
- What is CVE-2023-6606?
- CVE-2023-6606 is a high-severity vulnerability in Linux Kernel, classified under Out-of-bounds Read. CVSS score: 7.1/10. Published 2023-12-08.
- How severe is CVE-2023-6606?
- High severity. CVSS v3 base score is 7.1 out of 10.
- Is CVE-2023-6606 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.