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CVE-2023-2156

HIGH
7.5
CVSS Score
Published: May 9, 2023 at 12:00 AM UTC
Updated: June 17, 2026 at 05:51 AM UTC
5 products affected across 4 vendorsLinux KernelDebian LinuxFedora

Using Linux kernel (RPL protocol) by N/A?

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Severity
HIGH7.5
Exploit prediction
EPSS 6%

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Debian Linux· Debiandrupal
95%
10.0
Fedora· Fedora Projectrpm
95%
38
Linux Kernel· Linux
95%
5.11 ≤ v < 5.15.1175.16 ≤ v < 6.1.345.7 ≤ v < 5.10.1846.2 ≤ v < 6.2.136.3 ≤ v < 6.3.8
Affected range stops below 5.10.184, so it looks safe — our inference, not a vendor statement
Affected range stops below 5.15.117, so it looks safe — our inference, not a vendor statement
Affected range stops below 6.1.34, so it looks safe — our inference, not a vendor statement
Affected range stops below 6.2.13, so it looks safe — our inference, not a vendor statement
Affected range stops below 6.3.8, so it looks safe — our inference, not a vendor statement
Enterprise Linux· Red Hatrpm
95%
9.0
Kernel· Red Hat
60%
Reproducible on the latest mainline.

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (10)

Mailing List
Source: [email protected]
http://www.openwall.com/lists/oss-security/2023/05/17/8
Mailing List
Source: [email protected]
http://www.openwall.com/lists/oss-security/2023/05/17/9
Mailing List
Source: [email protected]
http://www.openwall.com/lists/oss-security/2023/05/18/1
Mailing List
Source: [email protected]
http://www.openwall.com/lists/oss-security/2023/05/19/1
Issue TrackingThird Party Advisory
Source: [email protected]
https://bugzilla.redhat.com/show_bug.cgi?id=2196292
Mailing ListThird Party Advisory
Source: [email protected]
https://lists.debian.org/debian-lts-announce/2023/08/msg00001.html
Mailing ListThird Party Advisory
Source: [email protected]
https://security.netapp.com/advisory/ntap-20230622-0001/
Vendor AdvisoryThird Party AdvisoryVDB Entry
Source: [email protected]
https://www.debian.org/security/2023/dsa-5448

CVSS

7.5HIGH[email protected]
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-617

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