CVE-2022-49982 Information

Jun 19, 2025 cve

Description

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.

Reference

https://git.kernel.org/stable/c/2fe46195d2f0d5d09ea65433aefe47a4d0d0ff4d https://git.kernel.org/stable/c/466b67c0543b2ae67814d053f6e29b39be6b33bb https://git.kernel.org/stable/c/491762b3250fb06a0c97b5198656ea48359eaeed https://git.kernel.org/stable/c/945a9a8e448b65bec055d37eba58f711b39f66f0 https://git.kernel.org/stable/c/ba7dd8a9686a61a34b3a7b922ce721378d4740d0 https://git.kernel.org/stable/c/bacb37bdc2a21c8f7fdc83dcc0dea2f4ca1341fb https://git.kernel.org/stable/c/c02d2a91a85c4c4d05826cd1ea74a9b8d42e4280 https://git.kernel.org/stable/c/f2f6e67522916f53ad8ccd4dbe68dcf76e9776e5

CNNVD-202506-2268 (Published: 2025-06-18)

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