CVE-2023-42754
MEDIUM severity · CVSS 5.5 · CWE-476
5.5CVSS MEDIUM
Summary
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 & exploitability
Attack vectorLocal
Attack complexityLow
Privileges requiredLow
User interactionNone
Confidentiality impactNone
Integrity impactNone
Availability impactHigh
Exploit probability (EPSS)0%
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Affected products we track (3)
Recommendation
Apply the vendor fix in your normal patch cycle. Open any affected product above for its exact safe version.
Official patch: https://access.redhat.com/security/cve/CVE-2023-42754 ↗
Additional information
- NVD record
- https://access.redhat.com/security/cve/CVE-2023-42754Patch
- https://bugzilla.redhat.com/show_bug.cgi?id=2239845Patch
- https://seclists.org/oss-sec/2023/q4/14Patch
- https://access.redhat.com/errata/RHSA-2024:2394
- https://access.redhat.com/errata/RHSA-2024:2950
- https://access.redhat.com/errata/RHSA-2024:3138