medium
6.5
CWE
125
Advisory Published
CVE Published
Updated

CVE-2023-42755: Kernel: rsvp: out-of-bounds read in rsvp_classify()

First published: Wed Sep 20 2023(Updated: )

A flaw was found in rsvp_change(). The root cause is an slab-out-of-bound access, but since the offset to the original pointer is an `unsign int` fully controlled by users, the behavior is usually a wild pointer access.

Credit: secalert@redhat.com secalert@redhat.com secalert@redhat.com

Affected SoftwareAffected VersionHow to fix
redhat/kernel<6.3
6.3
Linux kernel<6.3
Red Hat Enterprise Linux=8.0
Linux Kernel<6.3
Debian Linux=10.0
IBM Security Verify Governance - Identity Manager<=ISVG 10.0.2
IBM Security Verify Governance, Identity Manager Software Stack<=ISVG 10.0.2
IBM Security Verify Governance, Identity Manager Virtual Appliance<=ISVG 10.0.2
IBM Security Verify Governance Identity Manager Container<=ISVG 10.0.2
debian/linux
5.10.223-1
5.10.234-1
6.1.129-1
6.1.128-1
6.12.21-1
6.12.22-1

Remedy

https://bugzilla.redhat.com/show_bug.cgi?id=2239847

Remedy

https://seclists.org/oss-sec/2023/q3/229

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Reference Links

Parent vulnerabilities

(Appears in the following advisories)

Frequently Asked Questions

  • What is the severity of CVE-2023-42755?

    CVE-2023-42755 is classified as a high severity vulnerability due to its potential for wild pointer access.

  • How do I fix CVE-2023-42755?

    To mitigate CVE-2023-42755, update your kernel to version 6.3 or later if you are using Red Hat, or apply the recommended patches for affected Debian versions.

  • Which systems are affected by CVE-2023-42755?

    CVE-2023-42755 affects the Linux kernel versions up to 6.3 and specific versions of Red Hat Enterprise Linux and Debian.

  • What type of vulnerability is CVE-2023-42755?

    CVE-2023-42755 is a slab-out-of-bounds access vulnerability found in the rsvp_change() function.

  • Is CVE-2023-42755 being actively exploited?

    As of now, there is no public information indicating that CVE-2023-42755 is being actively exploited in the wild.

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