Not yet scoredPublished Jul 19, 2026

CVE-2026-63898USB: serial: mct_u232: fix memory corruption with small endpoint

Updated under an hour ago (Oct 28, 2026, 3:30 AM ET)

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Exploited in the last 30 days

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.

CVSS: Not yet scored
Weakness (CWE): Not given
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Linux
NVD analysis: Awaiting Analysis
Record last updated: Jul 19, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 94edbbc5fe00d03cfe1d4e690d7d2cd36317a935; from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before bd2ddb3fe9052ad8703593bbec26ecc7ca92869e; from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 39e295a91e80f3b91f61c7ada2bde434dcaba20d; from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 90dbad14b109e5fdfb4934ff61e561d11ba3742d; from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 6cb48f8890f9b2051d7c34823057296a536a31c5; from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before d8fdf33d6fcfb90cbec26299baf2352c84b2d768; from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 57f332af1745014cd7e40414814ffaa6bc7d3b5b; from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 915b36d701950503c4ea0f6e314b10868e59fce3	CNA record

References

References

https://git.kernel.org/stable/c/94edbbc5fe00d03cfe1d4e690d7d2cd36317a935
https://git.kernel.org/stable/c/bd2ddb3fe9052ad8703593bbec26ecc7ca92869e
https://git.kernel.org/stable/c/39e295a91e80f3b91f61c7ada2bde434dcaba20d
https://git.kernel.org/stable/c/90dbad14b109e5fdfb4934ff61e561d11ba3742d
https://git.kernel.org/stable/c/6cb48f8890f9b2051d7c34823057296a536a31c5
https://git.kernel.org/stable/c/d8fdf33d6fcfb90cbec26299baf2352c84b2d768
https://git.kernel.org/stable/c/57f332af1745014cd7e40414814ffaa6bc7d3b5b
https://git.kernel.org/stable/c/915b36d701950503c4ea0f6e314b10868e59fce3

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.