CVE-2021-46934: i2c: validate user data in compat ioctl
First published: Tue Feb 27 2024(Updated: )
In the Linux kernel, the following vulnerability has been resolved: i2c: validate user data in compat ioctl Wrong user data may cause warning in i2c_transfer(), ex: zero msgs. Userspace should not be able to trigger warnings, so this patch adds validation checks for user data in compact ioctl to prevent reported warnings
Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Linux Linux kernel | >=4.15.0<4.19.224 | |
| Linux Linux kernel | >=4.20.0<5.4.170 | |
| Linux Linux kernel | >=5.5.0<5.10.90 | |
| Linux Linux kernel | >=5.11.0<5.15.13 |
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Reference Links
- https://git.kernel.org/stable/c/407c8708fb1bf2d4afc5337ef50635cf540c364b
- https://git.kernel.org/stable/c/9e4a3f47eff476097e0c7faac04d1831fc70237d
- https://git.kernel.org/stable/c/8d31cbab4c295d7010ebb729e9d02d0e9cece18f
- https://git.kernel.org/stable/c/f68599581067e8a5a8901ba9eb270b4519690e26
- https://git.kernel.org/stable/c/bb436283e25aaf1533ce061605d23a9564447bdf
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