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Status published
Medium
CVE-2023-42754
Kernel: ipv4: null pointer dereference in ipv4_send_dest_unreach()
Vulnerability Description
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.
Impact Analysis
Refer to official advisory for detailed impact metrics.
Remediation
Ensure systems are updated to the latest vendor-supplied patch levels.
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Credits & Attribution
No credits recorded in the NVD database.
References
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Affected Vendor
Red Hat
View all reports →Affected Software
Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9, Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 7
Vulnerable Versions:
0:4.18.0-553.rt7.342.el8_10, 0:4.18.0-553.el8_10, 0:5.14.0-427.13.1.el9_4
Timeline
Official Publish:
October 5th, 2023
Last Modified:
November 6th, 2025
Added to House:
July 22nd, 2026
CVSS Vectors
V3:
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H