CVE-2026-63898
USB: serial: mct_u232: fix memory corruption with small endpoint
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
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.
| Vendor | linux |
| Product | linux |
| Ecosystems | |
| Industries | Technology |
| Published | Jul 19, 2026 |
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Affected Versions
Linux / Linux
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 94edbbc5fe00d03cfe1d4e690d7d2cd36317a935 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < bd2ddb3fe9052ad8703593bbec26ecc7ca92869e 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 39e295a91e80f3b91f61c7ada2bde434dcaba20d 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 90dbad14b109e5fdfb4934ff61e561d11ba3742d 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 6cb48f8890f9b2051d7c34823057296a536a31c5 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < d8fdf33d6fcfb90cbec26299baf2352c84b2d768 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 57f332af1745014cd7e40414814ffaa6bc7d3b5b 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 915b36d701950503c4ea0f6e314b10868e59fce3
Linux / Linux
2.6.12
References
git.kernel.org: https://git.kernel.org/stable/c/94edbbc5fe00d03cfe1d4e690d7d2cd36317a935 git.kernel.org: https://git.kernel.org/stable/c/bd2ddb3fe9052ad8703593bbec26ecc7ca92869e git.kernel.org: https://git.kernel.org/stable/c/39e295a91e80f3b91f61c7ada2bde434dcaba20d git.kernel.org: https://git.kernel.org/stable/c/90dbad14b109e5fdfb4934ff61e561d11ba3742d git.kernel.org: https://git.kernel.org/stable/c/6cb48f8890f9b2051d7c34823057296a536a31c5 git.kernel.org: https://git.kernel.org/stable/c/d8fdf33d6fcfb90cbec26299baf2352c84b2d768 git.kernel.org: https://git.kernel.org/stable/c/57f332af1745014cd7e40414814ffaa6bc7d3b5b git.kernel.org: https://git.kernel.org/stable/c/915b36d701950503c4ea0f6e314b10868e59fce3