CVE-2021-46934

i2c: validate user data in compat ioctl

LOW

3.3

CVSS Score

Published: February 27, 2024 at 09:44 AM UTC

Updated: June 17, 2026 at 04:15 AM UTC

1 product affected across 1 vendorLinux Kernel

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Severity

LOW3.3

Exploit prediction

EPSS 0.2%

SSVC

No known exploit

Description

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

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Linux Kernel · Linux

95%

4.15 ≤ v < 4.19.2244.15 ≤ v < 5.10.904.15 ≤ v < 5.15.134.15 ≤ v < 5.164.15 ≤ v < 5.4.1704.15.0 ≤ v < 4.19.2244.20.0 ≤ v < 5.4.1705.11.0 ≤ v < 5.15.135.5.0 ≤ v < 5.10.904.157d5cb45655f2e9e37ef75d18f50c0072ef14a38b

Vendor states this is fixed in 407c8708fb1bf2d4afc5337ef50635cf540c364b (fixed)

Vendor states this is fixed in 8d31cbab4c295d7010ebb729e9d02d0e9cece18f (fixed)

Vendor states this is fixed in 9e4a3f47eff476097e0c7faac04d1831fc70237d (fixed)

Vendor states this is fixed in bb436283e25aaf1533ce061605d23a9564447bdf (fixed)

Vendor states this is fixed in f68599581067e8a5a8901ba9eb270b4519690e26 (fixed)

Vendor states this is fixed in 4.15 (unaffected)

Vendor states this is fixed in 4.19.224 (unaffected)

Vendor states this is fixed in 5.10.90 (unaffected)

Vendor states this is fixed in 5.15.13 (unaffected)

Vendor states this is fixed in 5.16 (unaffected)

Vendor states this is fixed in 5.4.170 (unaffected)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references