In the Linux kernel, the following vulnerability has been resolved: USB: serial: mct_u232: fix memory corruption with small endpoint The driver… (CVE-2026-63898)
In the Linux kernel, the following vulnerability has been resolved: USB: serial: mct_u232: fix memory corruption with small endpoint The driver overrides the maximum transfer size for a specific device which only accepts 16 byte packets for its 32 byte bulk-out endpoint. Make sure to never increase the maximum transfer size to prevent slab corruption should a malicious device report a smaller endpoint max packet size than expected.
In the Linux kernel, the following vulnerability has been resolved: USB: serial: mct_u232: fix memory corruption with small endpoint The driver… (CVE-2026-63898)
Description
In the Linux kernel, the following vulnerability has been resolved: USB: serial: mct_u232: fix memory corruption with small endpoint The driver overrides the maximum transfer size for a specific device which only accepts 16 byte packets for its 32 byte bulk-out endpoint. Make sure to never increase the maximum transfer size to prevent slab corruption should a malicious device report a smaller endpoint max packet size than expected.
Affected software
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-6rff-3vpp-qcmx
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-63898"]
- Ecosystems
- []
- Database Specific Severity
- null
- Cvss Version
- null
Threat ID: 6a5d27ab2a4a8d598912f92f
Added to database: 07/19/2026, 19:38:19 UTC
Last enriched: 07/19/2026, 20:10:15 UTC
Last updated: 09/03/2026, 10:52:10 UTC
Views: 104
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