Description
A flaw was found in the Netfilter subsystem in the Linux kernel. The xt_u32 module did not validate the fields in the xt_u32 structure. This flaw allows a local privileged attacker to trigger an out-of-bounds read by setting the size fields with a value beyond the array boundaries, leading to a crash or information disclosure.
References (6)
Core 6
Core References
Third Party Advisory, VDB Entry
https://www.zerodayinitiative.com/advisories/ZDI-CAN-18408/
Vendor Advisory vendor-advisory
x_refsource_redhat
https://access.redhat.com/errata/RHSA-2024:2950
Vendor Advisory vendor-advisory
x_refsource_redhat
https://access.redhat.com/errata/RHSA-2024:3138
Third Party Advisory vdb-entry
x_refsource_redhat
https://access.redhat.com/security/cve/CVE-2023-39192
Issue Tracking, Patch, Third Party Advisory issue-tracking
x_refsource_redhat
https://bugzilla.redhat.com/show_bug.cgi?id=2226784
Scores
CVSS v3
6.7
EPSS
0.0001
EPSS Percentile
1.0%
Attack Vector
LOCAL
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:L
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
total
Details
CWE
CWE-125
Status
published
Products (3)
fedoraproject/fedora
38
linux/linux_kernel
< 6.6
redhat/enterprise_linux
8.0
Published
Oct 09, 2023
Tracked Since
Feb 18, 2026