CVE-2022-50767

fbdev: smscufx: Fix several use-after-free bugs

N/A

Published: December 24, 2025 at 01:05 PM UTC

Updated: June 17, 2026 at 05:24 AM UTC

1 product affected across 1 vendorLinux Kernel

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Severity

N/A

Exploit prediction

EPSS 0.3%

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Linux Kernel · Linux

95%

3.2 ≤ v < 4.14.2983.2 ≤ v < 4.19.2643.2 ≤ v < 4.9.3323.2 ≤ v < 5.10.1533.2 ≤ v < 5.15.773.2 ≤ v < 5.4.2233.2 ≤ v < 6.0.73.2 ≤ v < 6.13.23c8a63e22a0802fd56380f6ab305b419f18eb6f5

Vendor states this is fixed in 3f40852d671072836fb7ae331a1f28a24223c4e8 (fixed)

Vendor states this is fixed in 5385af2f89bc352fb70753ab41b2bb036190141f (fixed)

Vendor states this is fixed in 6f2075ea883e5d7730d0c9ebb1bb8e7a1a7e953f (fixed)

Vendor states this is fixed in 70faf9d9b6cc74418716bbf76fe75bd2da10ad4a (fixed)

Vendor states this is fixed in 8d924b262f3178a9b17c17d4306a9f426c508bd9 (fixed)

Vendor states this is fixed in cc67482c9e5f2c80d62f623bcc347c29f9f648e1 (fixed)

Vendor states this is fixed in cc6a7249842fceda7574ceb63275a2d5e99d2862 (fixed)

Vendor states this is fixed in d9ddfeb01fb95ffbbc7031d46a5ee2a5e45cbb86 (fixed)

Vendor states this is fixed in 3.2 (unaffected)

Vendor states this is fixed in 4.14.298 (unaffected)

Vendor states this is fixed in 4.19.264 (unaffected)

Vendor states this is fixed in 4.9.332 (unaffected)