CVE-2022-49982: linux kernel — Fix

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.

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CVSS v3.1 Score

5.5

MEDIUM

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Weakness Type (CWE)

CWE-401 CWE-401

Affected Products

Vendor	Product	Versions
linux	linux_kernel	< 4.9.327
linux	linux_kernel	4.10 — 4.14.292
linux	linux_kernel	4.15 — 4.19.257
linux	linux_kernel	4.20 — 5.4.212
linux	linux_kernel	5.5 — 5.10.141
linux	linux_kernel	5.11 — 5.15.65
linux	linux_kernel	5.16 — 5.19.7

References

Advisories & Patches

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

Frequently Asked Questions

What is CVE-2022-49982? +

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. It has a CVSS v3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2022-49982? +

CVE-2022-49982 has a CVSS v3.1 score of 5.5 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

What products are affected by CVE-2022-49982? +

CVE-2022-49982 affects products from linux, specifically: linux_kernel. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2022-49982? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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CVE-2022-49982