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CVE-2023-42754

Good to know:

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Date: October 5, 2023

A NULL pointer dereference flaw was found in the Linux kernel ipv4 stack. The socket buffer (skb) was assumed to be associated with a device before calling __ip_options_compile, which is not always the case if the skb is re-routed by ipvs. This issue may allow a local user with CAP_NET_ADMIN privileges to crash the system.

Language: C

Severity Score

Related Resources (10)

https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/V5PDNWPKAP3WL5RQZ4RIDS6MG32OHH5R/
https://lists.debian.org/debian-lts-announce/2024/01/msg00004.html
https://nvd.nist.gov/vuln/detail/CVE-2023-42754
https://access.redhat.com/errata/RHSA-2024:2394
https://seclists.org/oss-sec/2023/q4/14
https://access.redhat.com/security/cve/CVE-2023-42754
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/GISYSL3F6WIEVGHJGLC2MFNTUXHPTKQH/
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/GPMICQ2HVZO5UAM5KPXHAZKA2U3ZDOO6/
https://bugzilla.redhat.com/show_bug.cgi?id=2239845
https://www.mend.io/vulnerability-database/CVE-2023-42754

Severity Score

Weakness Type (CWE)

NULL Pointer Dereference

CWE-476

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): UNCHANGED
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): HIGH

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