Description
In the Linux kernel, the following vulnerability has been resolved: HID: cp2112: prevent a buffer overflow in cp2112_xfer() Smatch warnings: drivers/hid/hid-cp2112.c:793 cp2112_xfer() error: __memcpy() 'data->block[1]' too small (33 vs 255) drivers/hid/hid-cp2112.c:793 cp2112_xfer() error: __memcpy() 'buf' too small (64 vs 255) The 'read_length' variable is provided by 'data->block[0]' which comes from user and it(read_length) can take a value between 0-255. Add an upper bound to 'read_length' variable to prevent a buffer overflow in memcpy().
Affected products
linux: linux kernel
References7
- git.kernel.org/stable/c/26e427ac85c2b8d0d108cc80b6de34d33e2780c4 Patch
- git.kernel.org/stable/c/381583845d19cb4bd21c8193449385f3fefa9caf Patch
- git.kernel.org/stable/c/3af7d60e9a6c17d6d41c4341f8020511887d372d Patch
- git.kernel.org/stable/c/519ff31a6ddd87aa4905bd9bf3b92e8b88801614 Patch
- git.kernel.org/stable/c/8489a20ac481b08c0391608d81ed3796d373cfdf Patch
- git.kernel.org/stable/c/e7028944e61014ae915e7fb74963d3835f2f761a Patch
- git.kernel.org/stable/c/ebda3d6b004bb6127a66a616524a2de152302ca7 Patch
Metrics
- CVSS 3.1
-
7.8
HIGH
Score source: NVD
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - EPSS — exploit probability
- 0% percentile: 13 · as of 7 November 2026
- CWE
- CWE-787
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