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CVE-2023-42753

Kernel: netfilter: potential slab-out-of-bound access due to integer underflow

Published: 9/25/2023 Last updated: 2/27/2025 Reserved: 9/13/2023

An array indexing vulnerability was found in the netfilter subsystem of the Linux kernel. A missing macro could lead to a miscalculation of the `h->nets` array offset, providing attackers with the primitive to arbitrarily increment/decrement a memory buffer out-of-bound. This issue may allow a local user to crash the system or potentially escalate their privileges on the system.

CNA assigner: redhat (53f830b8-0a3f-465b-8143-3b8a9948e749) Requested by: n/a

Metrics

Version Score Severity Vector String
3.1 7 High CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Opam packages affected (27)

albatross cdrom conf-bpftool conf-libbpf conf-linux-libc-dev core core_unix hvsock mirage-block-unix mm ocaml-probes orun rawlink rawlink-eio rawlink-lwt shell solo5 solo5-bindings-hvt solo5-bindings-spt solo5-cross-aarch64 solo5-kernel-ukvm tracy-client tuntap uring vhd-format vhd-format-lwt xapi-stdext-unix

Products affected (33)

Product Vendor Version
Red Hat Enterprise Linux 9 Red Hat n/a
Red Hat Enterprise Linux 8.6 Extended Update Support Red Hat 2.2.15.0
Red Hat Enterprise Linux 8.8 Extended Update Support Red Hat n/a
Red Hat Enterprise Linux 9 Red Hat n/a
Red Hat Enterprise Linux 7 Red Hat n/a
Red Hat Virtualization 4 for Red Hat Enterprise Linux 8 Red Hat 75G
Red Hat Enterprise Linux 8 Red Hat < 6.2.9200.24374
Red Hat Enterprise Linux 8.2 Advanced Update Support Red Hat unspecified
Red Hat Enterprise Linux 6 Red Hat < <1.0.20.52
Red Hat Enterprise Linux 8.2 Telecommunications Update Service Red Hat 10 Version 1809 for 32-bit Systems
Red Hat Enterprise Linux 9.2 Extended Update Support Red Hat < 8.7
Red Hat Enterprise Linux 8.2 Update Services for SAP Solutions Red Hat < 6.3.9600.21063
Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support Red Hat 10 Version 1607 for x64-based Systems
Red Hat Enterprise Linux 7.7 Advanced Update Support Red Hat n/a
Red Hat Enterprise Linux 8.4 Telecommunications Update Service Red Hat 2019 (Core installation)
Red Hat Enterprise Linux 8.4 Update Services for SAP Solutions Red Hat <= 4.10.1
Red Hat Enterprise Linux 9.0 Extended Update Support Red Hat <= 3.2.48
Red Hat Enterprise Linux 7 Red Hat <= 3.08.03
Red Hat Enterprise Linux 8 Red Hat < <
Red Hat Enterprise Linux 8.2 Telecommunications Update Service Red Hat 10 Version 1803 for 32-bit Systems
Red Hat Enterprise Linux 8.4 Telecommunications Update Service Red Hat n/a
Red Hat Enterprise Linux 9.0 Extended Update Support Red Hat < bf20d85a88384574fabb3d53ad62a8af57e7ab11
Red Hat Enterprise Linux 9.2 Extended Update Support Red Hat 75D
Red Hat Enterprise Linux 9 Red Hat < cb37617687f2bfa5b675df7779f869147c9002bd
Red Hat Enterprise Linux 8.4 Update Services for SAP Solutions Red Hat n/a
Red Hat Enterprise Linux 8 Red Hat <= 3.3.11
Red Hat Enterprise Linux 9.0 Extended Update Support Red Hat 750
Red Hat Enterprise Linux 8.2 Update Services for SAP Solutions Red Hat <= 4.4.6
Red Hat Enterprise Linux 7 Red Hat All Versions < SE2020MP12
Red Hat Enterprise Linux 9.2 Extended Update Support Red Hat 75E
Red Hat Enterprise Linux 8.8 Extended Update Support Red Hat <= 1.7.0
Red Hat Enterprise Linux 9 Red Hat n/a
Red Hat Enterprise Linux 8.6 Extended Update Support Red Hat <= 12.6.5

References (60)