CVE-2023-39192
Kernel: netfilter: xtables out-of-bounds read in u32_match_it()
CVSS Score
6.7
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-125 |
| Vendor | red hat |
| Product | red hat enterprise linux 8 |
| Published | Oct 9, 2023 |
| Last Updated | Nov 8, 2025 |
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CVSS v3 Breakdown
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:L Attack Vector
Local
Attack Complexity
Low
Privileges Required
High
User Interaction
None
Scope
Changed
Confidentiality
High
Integrity
None
Availability
Low
Affected Versions
Red Hat / Red Hat Enterprise Linux 8
All versions affected Red Hat / Red Hat Enterprise Linux 8
All versions affected Red Hat / Red Hat Enterprise Linux 6
All versions affected Red Hat / Red Hat Enterprise Linux 7
All versions affected Red Hat / Red Hat Enterprise Linux 7
All versions affected Red Hat / Red Hat Enterprise Linux 9
All versions affected Red Hat / Red Hat Enterprise Linux 9
All versions affected References
access.redhat.com: https://access.redhat.com/errata/RHSA-2024:2950 access.redhat.com: https://access.redhat.com/errata/RHSA-2024:3138 access.redhat.com: https://access.redhat.com/security/cve/CVE-2023-39192 bugzilla.redhat.com: https://bugzilla.redhat.com/show_bug.cgi?id=2226784 zerodayinitiative.com: https://www.zerodayinitiative.com/advisories/ZDI-CAN-18408/ lists.debian.org: https://lists.debian.org/debian-lts-announce/2024/01/msg00004.html