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🛡️ CVE-2023-54277 — kernel

⚪ Unknown ✅ No Known Exploit NVD
N/A
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

fbdev: udlfb: Fix endpoint check

In the Linux kernel, the following vulnerability has been resolved:

fbdev: udlfb: Fix endpoint check

The syzbot fuzzer detected a problem in the udlfb driver, caused by an

endpoint not having the expected type:

usb 1-1: Read EDID byte 0 failed: -71

usb 1-1: Unable to get valid EDID from device/display

------------[ cut here ]------------

usb 1-1: BOGUS urb xfer, pipe 3 != type 1

WARNING: CPU: 0 PID: 9 at drivers/usb/core/urb.c:504 usb_submit_urb+0xed6/0x1880

drivers/usb/core/urb.c:504

Modules linked in:

CPU: 0 PID: 9 Comm: kworker/0:1 Not tainted

6.4.0-rc1-syzkaller-00016-ga4422ff22142 #0

Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google

04/28/2023

Workqueue: usb_hub_wq hub_event

RIP: 0010:usb_submit_urb+0xed6/0x1880 drivers/usb/core/urb.c:504

...

Call Trace:

<TASK>

dlfb_submit_urb+0x92/0x180 drivers/video/fbdev/udlfb.c:1980

dlfb_set_video_mode+0x21f0/0x2950 drivers/video/fbdev/udlfb.c:315

dlfb_ops_set_par+0x2a7/0x8d0 drivers/video/fbdev/udlfb.c:1111

dlfb_usb_probe+0x149a/0x2710 drivers/video/fbdev/udlfb.c:1743

The current approach for this issue failed to catch the problem

because it only checks for the existence of a bulk-OUT endpoint; it

doesn't check whether this endpoint is the one that the driver will

actually use.

We can fix the problem by instead checking that the endpoint used by

the driver does exist and is bulk-OUT.

Affected software

CVE-2023-54277 is recorded against 2 packages.

  • kernel (from 5.18.0 up to 6.3.5)
  • unknown

Timeline and source

Published on 30 December 2025 and last revised on 12 August 2026. No public exploit is currently recorded for this entry. Record sourced from NVD.

References

git.kernel.org (Web)
git.kernel.org (Web)
git.kernel.org (Web)
git.kernel.org (Web)
git.kernel.org (Web)
git.kernel.org (Web)
github.com (Advisory)
nvd.nist.gov (Advisory)
git.kernel.org (Package)

Other advisories for this package

kernel has other advisories on record. If you are patching this one, these are worth checking on the same host:

CVE-2023-54277 on other distributions

Each distribution ships its own build and its own fixed version. Pick the one you run:

Details

Severity Unknown
CVSS Score N/A
CVSS Vector N/A
CWE N/A
Public Exploit ✅ No
Source NVD
Published 2025-12-30
Updated 2026-08-20
Modified 2026-08-12
Fix URL N/A

Affected Packages

Software From version Fixed in
kernel 5.18.0 6.3.5
unknown — —

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ⓘ Data Notice: The information presented above has been compiled from publicly available internet sources. Boteraser aggregates this data solely for informational purposes and does not independently classify, evaluate, or endorse any findings about the vulnerabilities listed. The accuracy and completeness of this information is the sole responsibility of the original publishers. Boteraser and its operators accept no liability for any decisions made based on this data.

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