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.

References

• https://git.kernel.org/stable/c/39e295a91e80f3b91f61c7ada2bde434dcaba20d
• https://git.kernel.org/stable/c/57f332af1745014cd7e40414814ffaa6bc7d3b5b
• https://git.kernel.org/stable/c/6cb48f8890f9b2051d7c34823057296a536a31c5
• https://git.kernel.org/stable/c/90dbad14b109e5fdfb4934ff61e561d11ba3742d
• https://git.kernel.org/stable/c/915b36d701950503c4ea0f6e314b10868e59fce3