CVE-2023-53459

HID: mcp-2221: prevent UAF in delayed work

Published: 10/1/2025 Last updated: 5/11/2026 Reserved: 10/1/2025

In the Linux kernel, the following vulnerability has been resolved: HID: mcp-2221: prevent UAF in delayed work If the device is plugged/unplugged without giving time for mcp_init_work() to complete, we might kick in the devm free code path and thus have unavailable struct mcp_2221 while in delayed work. Canceling the delayed_work item is enough to solve the issue, because cancel_delayed_work_sync will prevent the work item to requeue itself.

CNA assigner: Linux (416baaa9-dc9f-4396-8d5f-8c081fb06d67) Requested by: n/a

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 (4)

Product	Vendor	Version
Linux	Linux	12.2(8)YY4
Linux	Linux	12.2(8)YY3
Linux	Linux	10 Version 1803 for x64-based Systems
Linux	Linux	10 Version 1809 for ARM64-based Systems

CVE-2023-53459

HID: mcp-2221: prevent UAF in delayed work

Opam packages affected (29)

Products affected (4)

References (4)