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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 (29)

albatross cdrom conf-bpftool conf-libbpf conf-linux-libc-dev core core_unix hvsock mirage-block-unix mm ocaml-probes ortools_solvers orun rawlink rawlink-eio rawlink-lwt restricted 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 6 Red Hat <= 6.1.*
Red Hat Enterprise Linux 7 Red Hat <= 6.4.*
Red Hat Enterprise Linux 9 Red Hat < 6.8
Red Hat Enterprise Linux 9 Red Hat < 3a3f1e573a105328a2cca45a7cfbebabbf5e3192
Red Hat Enterprise Linux 8 Red Hat < e980de2ff109dacb6d9d3a77f01b27c467115ecb
Red Hat Enterprise Linux 7 Red Hat < 607b9fb2ce248cc5b633c5949e0153838992c152
Red Hat Enterprise Linux 6 Red Hat < 36ff93e66d0efc46e39fab536a9feec968daa766
Red Hat Enterprise Linux 8 Red Hat <= 6.2.*
Red Hat Enterprise Linux 9 Red Hat < 37f64bc8e001f216566d17ef9fd5608c762ebcd4
Red Hat Enterprise Linux 7 Red Hat 6.8
Red Hat Enterprise Linux 9 Red Hat <= 6.12.*
Red Hat Enterprise Linux 8 Red Hat 4.8
Red Hat Enterprise Linux 7 Red Hat < b102113469487b460e9e77fe9e00d49c50fe8c86

References (24)