CVE-2022-50767
published 2025-12-24CVE-2022-50767: 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…
PriorityP423
EPSS
0.22%
12.4th percentile
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
21 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | linux | < linux 6.0.7-1 (bookworm) | linux 6.0.7-1 (bookworm) |
| linux | linux | — | — |
| linux | linux | >= 3c8a63e22a0802fd56380f6ab305b419f18eb6f5 < 6f2075ea883e5d7730d0c9ebb1bb8e7a1a7e953f | 6f2075ea883e5d7730d0c9ebb1bb8e7a1a7e953f |
| linux | linux | >= 3c8a63e22a0802fd56380f6ab305b419f18eb6f5 < 3f40852d671072836fb7ae331a1f28a24223c4e8 | 3f40852d671072836fb7ae331a1f28a24223c4e8 |
| linux | linux | >= 3c8a63e22a0802fd56380f6ab305b419f18eb6f5 < 70faf9d9b6cc74418716bbf76fe75bd2da10ad4a | 70faf9d9b6cc74418716bbf76fe75bd2da10ad4a |
| linux | linux | >= 3c8a63e22a0802fd56380f6ab305b419f18eb6f5 < 5385af2f89bc352fb70753ab41b2bb036190141f | 5385af2f89bc352fb70753ab41b2bb036190141f |
| linux | linux | >= 3c8a63e22a0802fd56380f6ab305b419f18eb6f5 < d9ddfeb01fb95ffbbc7031d46a5ee2a5e45cbb86 | d9ddfeb01fb95ffbbc7031d46a5ee2a5e45cbb86 |
| linux | linux | >= 3c8a63e22a0802fd56380f6ab305b419f18eb6f5 < cc6a7249842fceda7574ceb63275a2d5e99d2862 | cc6a7249842fceda7574ceb63275a2d5e99d2862 |
| linux | linux | >= 3c8a63e22a0802fd56380f6ab305b419f18eb6f5 < 8d924b262f3178a9b17c17d4306a9f426c508bd9 | 8d924b262f3178a9b17c17d4306a9f426c508bd9 |
| linux | linux | >= 3c8a63e22a0802fd56380f6ab305b419f18eb6f5 < cc67482c9e5f2c80d62f623bcc347c29f9f648e1 | cc67482c9e5f2c80d62f623bcc347c29f9f648e1 |
| linux | linux_kernel | >= 0 < 5.10.158-1 | 5.10.158-1 |
| linux | linux_kernel | >= 0 < 6.0.7-1 | 6.0.7-1 |
| linux | linux_kernel | >= 0 < 6.0.7-1 | 6.0.7-1 |
| linux | linux_kernel | >= 0 < 6.0.7-1 | 6.0.7-1 |
| linux | linux_kernel | >= 3.2.0 < 4.9.332 | 4.9.332 |
| linux | linux_kernel | >= 4.10.0 < 4.14.298 | 4.14.298 |
| linux | linux_kernel | >= 4.15.0 < 4.19.264 | 4.19.264 |
| linux | linux_kernel | >= 4.20.0 < 5.4.223 | 5.4.223 |
| linux | linux_kernel | >= 5.11.0 < 5.15.77 | 5.15.77 |
| linux | linux_kernel | >= 5.16.0 < 6.0.7 | 6.0.7 |
| linux | linux_kernel | >= 5.5.0 < 5.10.153 | 5.10.153 |
Stop checking back — get the weekly exploitation signal.
Every Monday: what got weaponized or added to CISA KEV in the last seven days — each CVE cross-linked to its PoC, Nuclei template, and detection rule. Free, one email a week, unsubscribe in one click.
OSV
fbdev: smscufx: Fix several use-after-free bugs
osv·2025-12-24
CVE-2022-50767 fbdev: smscufx: Fix several use-after-free bugs
fbdev: smscufx: Fix several use-after-free bugs
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.
GHSA
GHSA-gvc9-3fj4-7qr5: In the Linux kernel, the following vulnerability has been resolved:
fbdev: smscufx: Fix several use-after-free bugs
Several types of UAFs can occur
ghsa_unreviewed·2025-12-24
CVE-2022-50767 GHSA-gvc9-3fj4-7qr5: In the Linux kernel, the following vulnerability has been resolved:
fbdev: smscufx: Fix several use-after-free bugs
Several types of UAFs can occur
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.
OSV
CVE-2022-50767: In the Linux kernel, the following vulnerability has been resolved: fbdev: smscufx: Fix several use-after-free bugs Several types of UAFs can occur wh
osv·2025-12-24
CVE-2022-50767 CVE-2022-50767: In the Linux kernel, the following vulnerability has been resolved: fbdev: smscufx: Fix several use-after-free bugs Several types of UAFs can occur wh
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.
Red Hat
kernel: fbdev: smscufx: Fix several use-after-free bugs
vendor_redhat·2025-12-24
CVE-2022-50767 kernel: fbdev: smscufx: Fix several use-after-free bugs
kernel: fbdev: smscufx: Fix several use-after-free bugs
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.
Package: kernel (Red Hat Enterprise Linux 10) - Not affected
Package: kernel (Red Hat Enterprise Linux 6) - Not affected
Package: kernel (Red Hat Enterprise Linux 7) - Not affected
Package: kernel-rt (Red Hat Enterprise Linux 7) - Not affected
Package: kernel (Red Hat Enterprise Linux 8) - Not affected
Package: kernel-rt (Red Hat Enterprise Linux 8) - Not affected
Package: kernel (R
Debian
CVE-2022-50767: linux - In the Linux kernel, the following vulnerability has been resolved: fbdev: smsc...
vendor_debian·2022
CVE-2022-50767 CVE-2022-50767: linux - In the Linux kernel, the following vulnerability has been resolved: fbdev: smsc...
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.
Scope: local
bookworm: resolved (fixed in 6.0.7-1)
bullseye: resolved (fixed in 5.10.158-1)
forky: resolved (fixed in 6.0.7-1)
sid: resolved (fixed in 6.0.7-1)
trixie: resolved (fixed in 6.0.7-1)
No detection rules found.
No public exploits indexed.
Wiz
CVE-2022-50767 Impact, Exploitability, and Mitigation Steps | Wiz
blogs_wiz
CVE-2022-50767 CVE-2022-50767 Impact, Exploitability, and Mitigation Steps | Wiz
## CVE-2022-50767 :
Linux Kernel vulnerability analysis and mitigation
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.
Source : NVD
Published December 24, 2025
CNA Score N/A
Affected Technologies
Linux Kernel
Linux Debian
Has Public Exploit No
Has CISA KEV Exploit No
CISA KEV Release Date N/A
CISA KEV Due Date N/A
Exploitation Probability Percentile (EPSS) 10.8
Exploitation Probability (EPSS) N/A
Affected packages and libraries
kernel-rt
linux-ibm-5.4
Sources
NVD
Debia
Bugzilla
CVE-2022-50767 kernel: fbdev: smscufx: Fix several use-after-free bugs
bugzilla·2025-12-24
CVE-2022-50767 CVE-2022-50767 kernel: fbdev: smscufx: Fix several use-after-free bugs
CVE-2022-50767 kernel: fbdev: smscufx: Fix several use-after-free bugs
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.
Discussion:
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025122457-CVE-2022-50767-9a13@gregkh/T
https://git.kernel.org/stable/c/3f40852d671072836fb7ae331a1f28a24223c4e8https://git.kernel.org/stable/c/5385af2f89bc352fb70753ab41b2bb036190141fhttps://git.kernel.org/stable/c/6f2075ea883e5d7730d0c9ebb1bb8e7a1a7e953fhttps://git.kernel.org/stable/c/70faf9d9b6cc74418716bbf76fe75bd2da10ad4ahttps://git.kernel.org/stable/c/8d924b262f3178a9b17c17d4306a9f426c508bd9https://git.kernel.org/stable/c/cc67482c9e5f2c80d62f623bcc347c29f9f648e1https://git.kernel.org/stable/c/cc6a7249842fceda7574ceb63275a2d5e99d2862https://git.kernel.org/stable/c/d9ddfeb01fb95ffbbc7031d46a5ee2a5e45cbb86
2025-12-24
Published