CVE-2022-50156
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)…
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.21%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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().
- CVSS 3.1
- 7.8 HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 0.21% probability · 11th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-787
- Affected
- linux/linux kernel
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
References
- https://git.kernel.org/stable/c/26e427ac85c2b8d0d108cc80b6de34d33e2780c4Patch
- https://git.kernel.org/stable/c/381583845d19cb4bd21c8193449385f3fefa9cafPatch
- https://git.kernel.org/stable/c/3af7d60e9a6c17d6d41c4341f8020511887d372dPatch
- https://git.kernel.org/stable/c/519ff31a6ddd87aa4905bd9bf3b92e8b88801614Patch
- https://git.kernel.org/stable/c/8489a20ac481b08c0391608d81ed3796d373cfdfPatch
- https://git.kernel.org/stable/c/e7028944e61014ae915e7fb74963d3835f2f761aPatch
- https://git.kernel.org/stable/c/ebda3d6b004bb6127a66a616524a2de152302ca7Patch
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.