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CVE-2023-42755

Good to know:

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Date: October 5, 2023

A flaw was found in the IPv4 Resource Reservation Protocol (RSVP) classifier in the Linux kernel. The xprt pointer may go beyond the linear part of the skb, leading to an out-of-bounds read in the `rsvp_classify` function. This issue may allow a local user to crash the system and cause a denial of service.

Language: C

Severity Score

Related Resources (9)

https://bugzilla.redhat.com/show_bug.cgi?id=2239847
https://lists.debian.org/debian-lts-announce/2023/10/msg00027.html
https://lists.debian.org/debian-lts-announce/2024/01/msg00004.html
https://seclists.org/oss-sec/2023/q3/229
https://access.redhat.com/security/cve/CVE-2023-42755
https://nvd.nist.gov/vuln/detail/CVE-2023-42755
https://access.redhat.com/errata/RHSA-2024:3138
https://access.redhat.com/errata/RHSA-2024:2950
https://www.mend.io/vulnerability-database/CVE-2023-42755

Severity Score

Weakness Type (CWE)

Out-of-bounds Read

CWE-125

Top Fix

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CVSS v3.1

Base Score:
Attack Vector (AV): LOCAL
Attack Complexity (AC): LOW
Privileges Required (PR): LOW
User Interaction (UI): NONE
Scope (S): CHANGED
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): HIGH

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