HOMEVULNERABILITIESCVE-2026-31620
MEDIUM

CVE-2026-31620

Published: April 24, 2026· Updated: Apr 28, 2026

4.6
CVSS v3.1
EPSS:0.02%probability of exploitation in 30 daysPercentile:4.6th

Official Description

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

ALSA: usx2y: us144mkii: fix NULL deref on missing interface 0

A malicious USB device with the TASCAM US-144MKII device id can have a

configuration containing bInterfaceNumber=1 but no interface 0. USB

configuration descriptors are not required to assign interface numbers

sequentially, so usb_ifnum_to_if(dev, 0) returns will NULL, which will

then be dereferenced directly.

Fix this up by checking the return value properly.

NVD Source

Technical Analysis

CVE-2026-31620 requires local access, meaning attackers must already have a foothold on the target system.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in availability disruption (denial of service), with a CVSS base score of 4.6.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorPhysical
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityNone
IntegrityNone
AvailabilityHigh
CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected Vendors & Products

Linux1 product
linux kernel
Source: NVD CPE · 1 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

PATCHhttps://git.kernel.org/stable/c/09b145c1f1331c40dc955c0024d636f25417cddb
PATCHhttps://git.kernel.org/stable/c/48bd344e1040b9f2eb512be73c13f5db83efc191
PATCHhttps://git.kernel.org/stable/c/d04dd67ab10dc978c6c843c6bd6a2a66a9444f51
PATCHhttps://git.kernel.org/stable/c/fbaf29ce00e7bce683f3faf4f2b326bd0a9e6602

All References (4)

→
https://git.kernel.org/stable/c/09b145c1f1331c40dc955c0024d636f25417cddbPatch
→
https://git.kernel.org/stable/c/48bd344e1040b9f2eb512be73c13f5db83efc191Patch
→
https://git.kernel.org/stable/c/d04dd67ab10dc978c6c843c6bd6a2a66a9444f51Patch
→
https://git.kernel.org/stable/c/fbaf29ce00e7bce683f3faf4f2b326bd0a9e6602Patch

Quick Facts

CVE IDCVE-2026-31620
CVSS Score4.6 / 10
SeverityMEDIUM
CISA KEVNo
EPSS (30d)0.02%
Affected1 vendor
PublishedApr 24, 2026

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2026-31620 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
← All Vulnerabilities·Search for CVE-2026-31620·NVD