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CVE-2022-49982

media: pvrusb2: fix memory leak in pvr_probe

Published: 6/18/2025 Last updated: 5/11/2026 Reserved: 6/18/2025

In the Linux kernel, the following vulnerability has been resolved: media: pvrusb2: fix memory leak in pvr_probe The error handling code in pvr2_hdw_create forgets to unregister the v4l2 device. When pvr2_hdw_create returns back to pvr2_context_create, it calls pvr2_context_destroy to destroy context, but mp->hdw is NULL, which leads to that pvr2_hdw_destroy directly returns. Fix this by adding v4l2_device_unregister to decrease the refcount of usb interface.

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 Cisco Prime Infrastructure and Evolved Programmable Network Manager 3.1(0.128), 1.2(400), 2.0(1.0.34A)
Linux Linux 6.5 before 6.5 U1d
Linux Linux n/a
Linux Linux Windows 7 for 32-bit Systems Service Pack 1

References (16)