CVE-2023-42754

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.

CVSS v3.1

5.5 MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CVSS v3.1

5.5 MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

EPSS

0.41% chance of exploitation in the next 30 days, 34th percentile

Published

2023-10-05

Updated

2025-11-06

Proof-of-concept exploits (1)

• https://seclists.org/oss-sec/2023/q4/14

References

• CVE Record
• NVD entry

Related

• CVE-2023-42753
• CVE-2023-42755
• CVE-2023-4270
• CVE-2023-42756
• CVE-2023-4269
• CVE-2023-4278