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CVE-2022-49455

misc: ocxl: fix possible double free in ocxl_file_register_afu

Published: 2/26/2025 Last updated: 5/11/2026 Reserved: 2/26/2025

In the Linux kernel, the following vulnerability has been resolved: misc: ocxl: fix possible double free in ocxl_file_register_afu info_release() will be called in device_unregister() when info->dev's reference count is 0. So there is no need to call ocxl_afu_put() and kfree() again. Fix this by adding free_minor() and return to err_unregister error path.

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

Metrics

Version Score Severity Vector String
3.1 7.8 High CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/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 (4)

Product Vendor Version
Linux Linux < 7.55
Linux Linux Secospace USG6600 V500R001C30SPC100, Secospace USG6600 V500R001C30SPC200, Secospace USG6600 V500R001C30SPC300, USG9500 V500R001C30SPC100, USG9500 V500R001C30SPC200, USG9500 V500R001C30SPC300
Linux Linux 12.2(1a)XC1
Linux Linux 12.2(2)XC2

References (12)