CVEvulnerability
CVE-2026-63898
- Status
- Undergoing Analysis
- Published
- 2026-07-19
- Last modified
- 2026-07-27
- Assigner
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
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 git.kernel.org
- https://git.kernel.org/stable/c/57f332af1745014cd7e40414814ffaa6bc7d3b5b git.kernel.org
- https://git.kernel.org/stable/c/6cb48f8890f9b2051d7c34823057296a536a31c5 git.kernel.org
- https://git.kernel.org/stable/c/90dbad14b109e5fdfb4934ff61e561d11ba3742d git.kernel.org
- https://git.kernel.org/stable/c/915b36d701950503c4ea0f6e314b10868e59fce3 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/d8fdf33d6fcfb90cbec26299baf2352c84b2d768 git.kernel.org