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CVE-2023-6531

Kernel: gc's deletion of an skb races with unix_stream_read_generic() leading to uaf

Published: 1/21/2024 Last updated: 11/6/2025 Reserved: 12/5/2023

A use-after-free flaw was found in the Linux Kernel due to a race problem in the unix garbage collector's deletion of SKB races with unix_stream_read_generic() on the socket that the SKB is queued on.

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 (14)

Product Vendor Version
Red Hat Enterprise Linux 9 Red Hat < 2022
Red Hat Enterprise Linux 6 Red Hat 15.2(1)SY6
Red Hat Enterprise Linux 7 Red Hat <= 4.16
Red Hat Enterprise Linux 9 Red Hat <= 5.3.5
Red Hat Enterprise Linux 9 Red Hat < unspecified
Red Hat Enterprise Linux 8 Red Hat n/a
Red Hat Enterprise Linux 6 Red Hat n/a
Red Hat Enterprise Linux 7 Red Hat n/a
Red Hat Enterprise Linux 9 Red Hat 3.17.1aS
Red Hat Enterprise Linux 9 Red Hat 16.1.1
Red Hat Enterprise Linux 7 Red Hat n/a
Red Hat Enterprise Linux 8 Red Hat n/a
Red Hat Enterprise Linux 9 Red Hat n/a
Red Hat Enterprise Linux 7 Red Hat 3.17.4S

References (20)