Unrated severityNVD Advisory· Published Jul 19, 2026· Updated Jul 27, 2026
CVE-2026-63898
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 products
2Patches
Vulnerability mechanics
References
8- git.kernel.org/stable/c/39e295a91e80f3b91f61c7ada2bde434dcaba20dnvd
- git.kernel.org/stable/c/57f332af1745014cd7e40414814ffaa6bc7d3b5bnvd
- git.kernel.org/stable/c/6cb48f8890f9b2051d7c34823057296a536a31c5nvd
- git.kernel.org/stable/c/90dbad14b109e5fdfb4934ff61e561d11ba3742dnvd
- git.kernel.org/stable/c/915b36d701950503c4ea0f6e314b10868e59fce3nvd
- git.kernel.org/stable/c/94edbbc5fe00d03cfe1d4e690d7d2cd36317a935nvd
- git.kernel.org/stable/c/bd2ddb3fe9052ad8703593bbec26ecc7ca92869envd
- git.kernel.org/stable/c/d8fdf33d6fcfb90cbec26299baf2352c84b2d768nvd
News mentions
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