# CVE-2022-50767: CVE-2022-50767

Status: published. Published: 2025-12-24. Updated: 2026-11-10.

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.

## Remediation

No remediation reported in collected sources

## Affected products and versions

Not reported in collected sources.

## Severity and prioritization

- CISA KEV: No listing in collected sources

- EPSS: Not available

- SSVC: Not available

- Weaknesses: Not reported

## Exploit evidence

No exploit evidence in collected sources. This is not proof of no exploitation.

## References

- https://git.kernel.org/stable/c/3f40852d671072836fb7ae331a1f28a24223c4e8 (416baaa9-dc9f-4396-8d5f-8c081fb06d67)

- https://git.kernel.org/stable/c/5385af2f89bc352fb70753ab41b2bb036190141f (416baaa9-dc9f-4396-8d5f-8c081fb06d67)

- https://git.kernel.org/stable/c/6f2075ea883e5d7730d0c9ebb1bb8e7a1a7e953f (416baaa9-dc9f-4396-8d5f-8c081fb06d67)

- https://git.kernel.org/stable/c/70faf9d9b6cc74418716bbf76fe75bd2da10ad4a (416baaa9-dc9f-4396-8d5f-8c081fb06d67)

- https://git.kernel.org/stable/c/8d924b262f3178a9b17c17d4306a9f426c508bd9 (416baaa9-dc9f-4396-8d5f-8c081fb06d67)

- https://git.kernel.org/stable/c/cc67482c9e5f2c80d62f623bcc347c29f9f648e1 (416baaa9-dc9f-4396-8d5f-8c081fb06d67)

- https://git.kernel.org/stable/c/cc6a7249842fceda7574ceb63275a2d5e99d2862 (416baaa9-dc9f-4396-8d5f-8c081fb06d67)

- https://git.kernel.org/stable/c/d9ddfeb01fb95ffbbc7031d46a5ee2a5e45cbb86 (416baaa9-dc9f-4396-8d5f-8c081fb06d67)

## Provenance

- NVD: https://nvd.nist.gov/vuln/detail/CVE-2022-50767; retrieved 2026-11-10; source updated 2026-11-10

Revision: ff7d3f32067c9694081664b59642b643131c4fbcf3189d266610c263d031cc7c

Canonical: https://y2.dev/cve/CVE-2022-50767

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