CVEvulnerability
CVE-2022-50767
- Status
- Deferred
- Published
- 2025-12-24
- Last modified
- 2026-06-17
- Assigner
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Description
In the Linux kernel, the following vulnerability has been resolved:
fbdev: smscufx: Fix several use-after-free bugs
Several types of UAFs can occur when physically removing a USB device.
Adds ufx_ops_destroy() function to .fb_destroy of fb_ops, and
in this function, there is kref_put() that finally calls ufx_free().
This fix prevents multiple UAFs.
References
- https://git.kernel.org/stable/c/3f40852d671072836fb7ae331a1f28a24223c4e8 git.kernel.org
- https://git.kernel.org/stable/c/5385af2f89bc352fb70753ab41b2bb036190141f git.kernel.org
- https://git.kernel.org/stable/c/6f2075ea883e5d7730d0c9ebb1bb8e7a1a7e953f git.kernel.org
- https://git.kernel.org/stable/c/70faf9d9b6cc74418716bbf76fe75bd2da10ad4a git.kernel.org
- https://git.kernel.org/stable/c/8d924b262f3178a9b17c17d4306a9f426c508bd9 git.kernel.org
- https://git.kernel.org/stable/c/cc67482c9e5f2c80d62f623bcc347c29f9f648e1 git.kernel.org
- https://git.kernel.org/stable/c/cc6a7249842fceda7574ceb63275a2d5e99d2862 git.kernel.org
- https://git.kernel.org/stable/c/d9ddfeb01fb95ffbbc7031d46a5ee2a5e45cbb86 git.kernel.org