CVE-2026-98668

high

Description

In the Linux kernel, the following vulnerability has been resolved: iio: buffer: Ensure bounce buffer used for unaligned case is zeroed. iio_push_to_buffers_with_ts_unaligned() leaks uninitialized heap memory to userspace if the data passed in is not a multiple of 8 bytes and the timestamp is enabled. Specify __GFP_ZERO for the devm_krealloc() to ensure any extra space is cleared.

References

https://git.kernel.org/stable/c/b5c2f21f645e40c70fda2a4283e6f2a81e5cb9f2

https://git.kernel.org/stable/c/b134ef820610bd873c9d59999d9824710964ce82

https://git.kernel.org/stable/c/5330036bc68d23672bfcc16c60c54701ae123083

https://git.kernel.org/stable/c/3a87212b1a09a1fdd730ce5520f7b1fc0b488511

https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-103922

Details

Source: Mitre, NVD

Published: 2026-10-18

Updated: 2026-10-19

Risk Information

CVSS v2

Base Score: 5.4

Vector: CVSS2#AV:L/AC:M/Au:N/C:P/I:N/A:C

Severity: Medium

CVSS v3

Base Score: 7.1

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

Severity: High

EPSS

EPSS: 0.00168