CVE-2026-63928

USB: serial: omninet: fix memory corruption with small endpoint

HIGH

7.8

CVSS Score

Published: July 19, 2026 at 02:55 PM UTC

Updated: October 30, 2026 at 02:29 PM UTC

1 product affected across 1 vendorLinux Kernel

Using Linux by Linux?

Get instant alerts when new vulnerabilities affect Linux - before attackers find them.

Real-time alertsTrack your software stackFree plan available

Start Free Sign In

Severity

HIGH7.8

Exploit prediction

EPSS 0.2%

Description

In the Linux kernel, the following vulnerability has been resolved: USB: serial: omninet: fix memory corruption with small endpoint Make sure that the bulk-out buffers are at least as large as the hardcoded transfer size to avoid user-controlled slab corruption should a malicious device report a smaller endpoint max packet size than expected.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Linux Kernel · Linux

95%

2.6.12.1 ≤ v < 5.10.2595.11 ≤ v < 5.15.2105.16 ≤ v < 6.1.1766.13 ≤ v < 6.18.356.19 ≤ v < 7.0.126.2 ≤ v < 6.6.1436.7 ≤ v < 6.12.931da177e4c3f41524e886b7f1b8a0c1fc7321cac2 2.6.12 7.1

Vendor states this is fixed in 0bda1893e4cc4ad2b7dcdbaca246f2af688c6c2a (fixed)

Vendor states this is fixed in 0fee0ccac29e088d4bfab7e2d075725dcecd803d (fixed)

Vendor states this is fixed in 180996f0ca774001944e4afa452d569ba2f6455c (fixed)

Vendor states this is fixed in 4e7d32189d6219beb7db37cd0ea36b6bac7dfedb (fixed)

Vendor states this is fixed in 60df93d30f9bdd27db17c4d80ed80ef718d7226b (fixed)

Vendor states this is fixed in 9a3860454bdfb765f936965e975c594352602ffc (fixed)

Vendor states this is fixed in b496e25ead5976bce2891dacaed09beb53a54f9f (fixed)

Vendor states this is fixed in f34cf2928387fba01a78381f3258c7e1428897d9 (fixed)

Vendor states this is fixed in 2.6.12 (unaffected)

Vendor states this is fixed in 5.10.259 (unaffected)

Vendor states this is fixed in 5.15.210 (unaffected)

Vendor states this is fixed in 6.1.176 (unaffected)