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NVD / CVE Program· CNA Linux

CVE-2023-54277: fbdev: udlfb: Fix endpoint check

Noroxi assessment

Priority: Monitor (action score 0/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.20% (FIRST EPSS).
  • Fixed version: Linux Linux 1522dc58bff87af79461b96d90ec122e9e726004, 5.10.181, 5.15.114.

Low priority for now. Upgrade to Linux Linux 1522dc58bff87af79461b96d90ec122e9e726004, 5.10.181, 5.15.114 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

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.

—No exploit Fix available
Published
Dec 30, 2025
Updated
Jun 17, 2026
EPSS
0.2% · 10th percentile
CWE
—

Report tools

JSON

Action score

0

Monitor

Low priority for now.

CVSS
0 / 40 · —
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.2%

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  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

—

Versions reported by the vendor

Affected version ranges reported by the assigning authority (Linux). Independent of NVD's CPE analysis and usually ahead of it.

  • Linux Linux

    • 895ea8a290ba87850bcaf2ecfcddef75a014fa54, 5.18affected
    • f6db63819db632158647d5bbf4d7d2d90dc1a268 and later · before 1522dc58bff87af79461b96d90ec122e9e726004affected · git
    • c4fb41bdf4d6ccca850c4af5d707d14a0fb717a7 and later · before 58ecc165abdaed85447455e6dc396758e8c6f219affected · git
    • 4df1584738f1dc6f0dd854d258bba48591f1ed0e and later · before 9e12c58a5ece41be72157cef348576b135c9fc72affected · git
    • aaf7dbe07385e0b8deb7237eca2a79926bbc7091 and later · before c8fdf7feca77cd99e25ef0a1e9e72dfc83add8efaffected · git
    • aaf7dbe07385e0b8deb7237eca2a79926bbc7091 and later · before e19383e5dee5adbf3d19f3f210f440a88d1b7ddeaffected · git
    • aaf7dbe07385e0b8deb7237eca2a79926bbc7091 and later · before ed9de4ed39875706607fb08118a58344ae6c5f42affected · git
    • 5.4.192 and later · before 5.4.244affected · semver
    • 5.10.114 and later · before 5.10.181affected · semver
    • 5.15.38 and later · before 5.15.114affected · semver

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 6.1.37-16.1.37-1
Debian:13linuxbefore 6.3.7-16.3.7-1

Same product

linux: all records

Other highest-scoring records for the same primary product.

  • CVE-2026-74705udp: fix potential use-after-free in tunnel segmentation
    40Plan
  • CVE-2026-74612veth: fix skb length accounting after XDP frag adjustment
    40Plan
  • CVE-2026-74475vxlan: use neigh_ha_snapshot() in route_shortcircuit()
    40Plan

Published before and after this one in the same product

  • ← EarlierCVE-2023-54275Dec 30, 2025 · wifi: ath11k: Fix memory leak in ath11k_peer_rx_frag_setup
    0Monitor
  • ← EarlierCVE-2023-54276Dec 30, 2025 · nfsd: move init of percpu reply_cache_stats counters back to nfsd_init_net
    0Monitor
  • Later →CVE-2023-54278Dec 30, 2025 · s390/vmem: split pages when debug pagealloc is enabled
    0Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
Linux Linux1522dc58bff87af79461b96d90ec122e9e726004Vendor (CNA)
Linux Linux5.10.181Vendor (CNA)
Linux Linux5.15.114Vendor (CNA)
Linux Linux5.18Vendor (CNA)
Linux Linux5.4.244Vendor (CNA)
Linux Linux58ecc165abdaed85447455e6dc396758e8c6f219Vendor (CNA)
Linux Linux9e12c58a5ece41be72157cef348576b135c9fc72Vendor (CNA)
Linux Linuxc8fdf7feca77cd99e25ef0a1e9e72dfc83add8efVendor (CNA)
Linux Linuxe19383e5dee5adbf3d19f3f210f440a88d1b7ddeVendor (CNA)
Linux Linuxed9de4ed39875706607fb08118a58344ae6c5f42Vendor (CNA)
debian:linux6.1.37-1 · Debian:12Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

No history yet (it accumulates with the daily EPSS job).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

No CVSS vector for this record, so attack conditions can't be derived.

Weakness class (CWE)

—

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

Change log

  1. Fix✗ → ✓

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References

Show all references (5 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records