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Vulnerability record · CVE-2023-2156 · published 9 May 2023

CVE-2023-2156: Linux kernel vulnerability

Linux · Linux Kernel

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.

7.5 CVSS 3.1 High EPSS 6.1% · top 6.8% CWE-617 · CWE-617
7.5CVSS 3.1 base score
6.1%EPSS exploitation probability, 30 days
NoNot in CISA KEV
4Affected product versions listed by NVD
20References
17 Jun 2026Last modified by NVD

Description

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.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected products

4 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://www.openwall.com/lists/oss-security/2023/05/17/8 Mailing List
http://www.openwall.com/lists/oss-security/2023/05/17/9 Mailing List
http://www.openwall.com/lists/oss-security/2023/05/18/1 Mailing List
http://www.openwall.com/lists/oss-security/2023/05/19/1 Mailing List
https://bugzilla.redhat.com/show_bug.cgi?id=2196292 Issue TrackingThird Party Advisory
https://lists.debian.org/debian-lts-announce/2023/08/msg00001.html Mailing ListThird Party Advisory
https://security.netapp.com/advisory/ntap-20230622-0001/ Mailing ListThird Party Advisory
https://www.debian.org/security/2023/dsa-5448 Third Party AdvisoryVDB Entry
https://www.debian.org/security/2023/dsa-5453 Third Party AdvisoryVDB Entry
https://www.zerodayinitiative.com/advisories/ZDI-23-547/ Third Party AdvisoryVDB Entry
http://www.openwall.com/lists/oss-security/2023/05/17/8 Mailing List
http://www.openwall.com/lists/oss-security/2023/05/17/9 Mailing List
http://www.openwall.com/lists/oss-security/2023/05/18/1 Mailing List
http://www.openwall.com/lists/oss-security/2023/05/19/1 Mailing List
https://bugzilla.redhat.com/show_bug.cgi?id=2196292 Issue TrackingThird Party Advisory
https://lists.debian.org/debian-lts-announce/2023/08/msg00001.html Mailing ListThird Party Advisory
https://security.netapp.com/advisory/ntap-20230622-0001/ Mailing ListThird Party Advisory
https://www.debian.org/security/2023/dsa-5448 Third Party AdvisoryVDB Entry
https://www.debian.org/security/2023/dsa-5453 Third Party AdvisoryVDB Entry
https://www.zerodayinitiative.com/advisories/ZDI-23-547/ Third Party AdvisoryVDB Entry

Track CVE-2023-2156 inside VULONE

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Source: NIST National Vulnerability Database (record CVE-2023-2156), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.