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CVE-2023-42755

Kernel: rsvp: out-of-bounds read in rsvp_classify()

Published: 10/5/2023 Last updated: 11/8/2025 Reserved: 9/13/2023

A flaw was found in the IPv4 Resource Reservation Protocol (RSVP) classifier in the Linux kernel. The xprt pointer may go beyond the linear part of the skb, leading to an out-of-bounds read in the `rsvp_classify` function. This issue may allow a local user to crash the system and cause a denial of service.

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

Metrics

Version Score Severity Vector String
3.1 6.5 Medium CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/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 (13)

Product Vendor Version
Red Hat Enterprise Linux 7 Red Hat 2008 R2 for x64-based Systems Service Pack 1 (Core installation)
Red Hat Enterprise Linux 8 Red Hat n/a
Red Hat Enterprise Linux 7 Red Hat < 2.4
Red Hat Enterprise Linux 8 Red Hat 2008 R2 for x64-based Systems Service Pack 1
Red Hat Enterprise Linux 9 Red Hat Windows Server 2008 for x64-based Systems Service Pack 2
Red Hat Enterprise Linux 9 Red Hat >= 9.0.1
Red Hat Enterprise Linux 6 Red Hat >= 9.0.0
Red Hat Enterprise Linux 9 Red Hat Windows 10 for 32-bit Systems
Red Hat Enterprise Linux 7 Red Hat n/a
Red Hat Enterprise Linux 9 Red Hat 2012
Red Hat Enterprise Linux 8 Red Hat 1.3
Red Hat Enterprise Linux 7 Red Hat < 13.7
Red Hat Enterprise Linux 8 Red Hat n/a

References (24)