Resource exhaustion in Linux Kernel
CVE-2023-1206
A hash collision flaw was found in the IPv6 connection lookup table in the Linux kernel’s IPv6 functionality when a user makes a new kind of SYN flood attack. A user located in the local network or with a high bandwidth connection can increase the CPU usage of the server that accepts IPV6 connections up to 95%.
Vulnerability class: DoS (Denial of Service)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.7 (Medium). Vector: CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.005 (43.7th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 44th percentile — 43.7% 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
- Fedoraproject Fedora — versions 38
- Red Hat Enterprise Linux — versions 8.0, 9.0
- Kernel — versions kernel 6.5-rc1
Weakness classification (CWE)
Public proof-of-concept exploits
References
- bugzilla.redhat.com/show_bug.cgi (Third Party Advisory, Issue Tracking)
- www.debian.org/security/2023/dsa-5480 (vendor-advisory)
- www.debian.org/security/2023/dsa-5492 (vendor-advisory)
- security.netapp.com/advisory/ntap-20230929-0006/
- lists.debian.org/debian-lts-announce/2023/10/msg00027.html (mailing-list)
- lists.debian.org/debian-lts-announce/2024/01/msg00004.html (mailing-list)
Frequently asked questions
- What is CVE-2023-1206?
- CVE-2023-1206 is a medium-severity vulnerability in Linux Kernel, classified under Uncontrolled Resource Consumption. CVSS score: 5.7/10. Published 2023-06-30.
- How severe is CVE-2023-1206?
- Medium severity. CVSS v3 base score is 5.7 out of 10.
- Is CVE-2023-1206 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.