CVE-2021-46934

LOW3.3

i2c: validate user data in compat ioctl

Published Feb 27, 2024

Modified 4 months ago

Details

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

References

WEB

https://git.kernel.org/stable/c/407c8708fb1bf2d4afc5337ef50635cf540c364b

WEB

https://git.kernel.org/stable/c/8d31cbab4c295d7010ebb729e9d02d0e9cece18f

WEB

https://git.kernel.org/stable/c/9e4a3f47eff476097e0c7faac04d1831fc70237d

WEB

https://git.kernel.org/stable/c/bb436283e25aaf1533ce061605d23a9564447bdf

WEB

https://git.kernel.org/stable/c/f68599581067e8a5a8901ba9eb270b4519690e26

ADVISORY

https://www.cve.org/CVERecord?id=CVE-2021-46934

CVSS Analysis

CVSS v3.1

3.3

Exploitability

Attack Vector

LocalAV:L

Attack Complexity

LowAC:L

Privileges Required

LowPR:L

User Interaction

NoneUI:N

Scope

UnchangedS:U

Impact

Confidentiality

NoneC:N

Integrity

LowI:L

Availability

NoneA:N

3.3/CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

Ecosystems

Timeline

PublishedFeb 27, 2024

ModifiedMay 11, 2026

CVE-2021-46934 | Mondoo Vulnerability Intelligence