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.
Analysis
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Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
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| Linux | Linux | unaffected |
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| Linux | Linux | affected |
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Thu, 25 Dec 2025 00:15:00 +0000
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Wed, 24 Dec 2025 13:15:00 +0000
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| 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. | |
| Title | fbdev: smscufx: Fix several use-after-free bugs | |
| First Time appeared |
Linux
Linux linux Kernel |
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| CPEs | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | |
| Vendors & Products |
Linux
Linux linux Kernel |
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| References |
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MITRE
Status: PUBLISHED
Assigner: Linux
Published:
Updated: 2026-05-11T19:25:08.910Z
Reserved: 2025-12-24T13:02:21.546Z
Link: CVE-2022-50767
Vulnrichment
No data.
NVD
Status : Deferred
Published: 2025-12-24T13:16:03.503
Modified: 2026-04-15T00:35:42.020
Link: CVE-2022-50767
Redhat
OpenCVE Enrichment
No data.
No weakness.