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

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Summary

CVECVE-2026-31615
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-04-24 15:16:40 UTC
Updated2026-04-28 17:29:26 UTC
DescriptionIn 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.

Risk And Classification

Primary CVSS: v3.1 5.5 MEDIUM from [email protected]

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

EPSS: 0.000180000 probability, percentile 0.048130000 (date 2026-04-27)

Problem Types: CWE-476

CVSS v3.1 Breakdown

Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Linux Linux Kernel All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected 746bfe63bba37ad55956b7377c9af494e7e28929 1b2bfedccc4fb8c9572e1ea464f905424c91de2a git Not specified
CNA Linux Linux affected 746bfe63bba37ad55956b7377c9af494e7e28929 adb8014599fdf0818d3d93f1f74e06cd0bdec08d git Not specified
CNA Linux Linux affected 746bfe63bba37ad55956b7377c9af494e7e28929 44216e3dd4455b798899b50eedb0ec3831dff8e0 git Not specified
CNA Linux Linux affected 746bfe63bba37ad55956b7377c9af494e7e28929 37f430b2240655e6b0199a92aa1057e4d621be51 git Not specified
CNA Linux Linux affected 746bfe63bba37ad55956b7377c9af494e7e28929 e3d42598f2995cdc07b7779874e7c5f8a1b773db git Not specified
CNA Linux Linux affected 746bfe63bba37ad55956b7377c9af494e7e28929 f880aac8a57ebd92abfa685d45424b2998ac1059 git Not specified
CNA Linux Linux affected 4.5 Not specified
CNA Linux Linux unaffected 4.5 semver Not specified
CNA Linux Linux unaffected 6.6.136 6.6.* semver Not specified
CNA Linux Linux unaffected 6.12.83 6.12.* semver Not specified
CNA Linux Linux unaffected 6.18.24 6.18.* semver Not specified
CNA Linux Linux unaffected 6.19.14 6.19.* semver Not specified
CNA Linux Linux unaffected 7.0.1 7.0.* semver Not specified
CNA Linux Linux unaffected 7.1-rc1 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/adb8014599fdf0818d3d93f1f74e06cd0bdec08d 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/e3d42598f2995cdc07b7779874e7c5f8a1b773db 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/37f430b2240655e6b0199a92aa1057e4d621be51 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/1b2bfedccc4fb8c9572e1ea464f905424c91de2a 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/f880aac8a57ebd92abfa685d45424b2998ac1059 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/44216e3dd4455b798899b50eedb0ec3831dff8e0 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
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