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Vulnerability record · CVE-2021-46934 · published 27 February 2024

CVE-2021-46934: Linux kernel vulnerability

Linux · Linux Kernel

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

3.3 CVSS 3.1 Low EPSS 0.23% · top 87.2% CWE-754 · CWE-754
3.3CVSS 3.1 base score
0.23%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
10References
17 Jun 2026Last modified by NVD

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

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

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://git.kernel.org/stable/c/407c8708fb1bf2d4afc5337ef50635cf540c364b Patch
https://git.kernel.org/stable/c/8d31cbab4c295d7010ebb729e9d02d0e9cece18f Patch
https://git.kernel.org/stable/c/9e4a3f47eff476097e0c7faac04d1831fc70237d Patch
https://git.kernel.org/stable/c/bb436283e25aaf1533ce061605d23a9564447bdf Patch
https://git.kernel.org/stable/c/f68599581067e8a5a8901ba9eb270b4519690e26 Patch
https://git.kernel.org/stable/c/407c8708fb1bf2d4afc5337ef50635cf540c364b Patch
https://git.kernel.org/stable/c/8d31cbab4c295d7010ebb729e9d02d0e9cece18f Patch
https://git.kernel.org/stable/c/9e4a3f47eff476097e0c7faac04d1831fc70237d Patch
https://git.kernel.org/stable/c/bb436283e25aaf1533ce061605d23a9564447bdf Patch
https://git.kernel.org/stable/c/f68599581067e8a5a8901ba9eb270b4519690e26 Patch

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Source: NIST National Vulnerability Database (record CVE-2021-46934), CISA KEV, FIRST EPSS (scores of 2026-09-28). This page is refreshed as NVD updates the record.