Vulnerability in Linux Kernel
CVE-2023-2156
A flaw was found in the networking subsystem of the Linux kernel within the handling of the RPL protocol. This issue results from the lack of proper handling of user-supplied data, which can lead to an assertion failure. This may allow an unauthenticated remote attacker to create a denial of service condition on the system.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.061 (93.2th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 93rd percentile — 93.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.061 · newest: 0.061 · change: 0.000
Affected products
- Linux Kernel
- Debian Linux — versions 10.0
- Fedoraproject Fedora — versions 38
- Red Hat Enterprise Linux — versions 9.0
- Linux Kernel (Rpl Protocol) — versions Reproducible on the latest mainline.
Weakness classification (CWE)
Public proof-of-concept exploits
References
- www.zerodayinitiative.com/advisories/ZDI-23-547/ (VDB Entry, Third Party Advisory)
- bugzilla.redhat.com/show_bug.cgi (Third Party Advisory, Issue Tracking)
- www.openwall.com/lists/oss-security/2023/05/17/8 (mailing-list, Mailing List)
- www.openwall.com/lists/oss-security/2023/05/17/9 (mailing-list, Mailing List)
- www.openwall.com/lists/oss-security/2023/05/18/1 (mailing-list, Mailing List)
- www.openwall.com/lists/oss-security/2023/05/19/1 (mailing-list, Mailing List)
- security.netapp.com/advisory/ntap-20230622-0001/ (Mailing List, Third Party Advisory)
- www.debian.org/security/2023/dsa-5448 (vendor-advisory, VDB Entry, Third Party Advisory)
- www.debian.org/security/2023/dsa-5453 (vendor-advisory, VDB Entry, Third Party Advisory)
- lists.debian.org/debian-lts-announce/2023/08/msg00001.html (mailing-list, Mailing List, Third Party Advisory)
Frequently asked questions
- What is CVE-2023-2156?
- CVE-2023-2156 is a high-severity vulnerability in Linux Kernel, classified under Reachable Assertion. CVSS score: 7.5/10. Published 2023-05-09.
- How severe is CVE-2023-2156?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2023-2156 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.