HOMEVULNERABILITIESCVE-2026-31615
MEDIUM

CVE-2026-31615

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

5.5
CVSS v3.1
EPSS:0.02%probability of exploitation in 30 daysPercentile:4.8th

Official Description

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

usb: gadget: renesas_usb3: validate endpoint index in standard request handlers

The GET_STATUS and SET/CLEAR_FEATURE handlers extract the endpoint

number from the host-supplied wIndex without any sort of validation.

Fix this up by validating the number of endpoints actually match up with

the number the device has before attempting to dereference a pointer

based on this math.

This is just like what was done in commit ee0d382feb44 ("usb: gadget:

aspeed_udc: validate endpoint index for ast udc") for the aspeed driver.

NVD Source

Technical Analysis

CVE-2026-31615 requires local access, meaning attackers must already have a foothold on the target system.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A successful exploit results in availability disruption (denial of service), with a CVSS base score of 5.5.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorLocal
Attack ComplexityLow
Privileges Req.Low
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityNone
IntegrityNone
AvailabilityHigh
CVSS:3.1/AV:L/AC:L/PR:L/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/1b2bfedccc4fb8c9572e1ea464f905424c91de2a
PATCHhttps://git.kernel.org/stable/c/37f430b2240655e6b0199a92aa1057e4d621be51
PATCHhttps://git.kernel.org/stable/c/44216e3dd4455b798899b50eedb0ec3831dff8e0
PATCHhttps://git.kernel.org/stable/c/adb8014599fdf0818d3d93f1f74e06cd0bdec08d
PATCHhttps://git.kernel.org/stable/c/e3d42598f2995cdc07b7779874e7c5f8a1b773db
PATCHhttps://git.kernel.org/stable/c/f880aac8a57ebd92abfa685d45424b2998ac1059

All References (6)

→
https://git.kernel.org/stable/c/1b2bfedccc4fb8c9572e1ea464f905424c91de2aPatch
→
https://git.kernel.org/stable/c/37f430b2240655e6b0199a92aa1057e4d621be51Patch
→
https://git.kernel.org/stable/c/44216e3dd4455b798899b50eedb0ec3831dff8e0Patch
→
https://git.kernel.org/stable/c/adb8014599fdf0818d3d93f1f74e06cd0bdec08dPatch
→
https://git.kernel.org/stable/c/e3d42598f2995cdc07b7779874e7c5f8a1b773dbPatch
→
https://git.kernel.org/stable/c/f880aac8a57ebd92abfa685d45424b2998ac1059Patch

Quick Facts

CVE IDCVE-2026-31615
CVSS Score5.5 / 10
SeverityMEDIUM
CISA KEVNo
EPSS (30d)0.02%
Affected1 vendor
PublishedApr 24, 2026

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2026-31615 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.
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