SB20261022262 - Use of uninitialized resource in Linux kernel iio driver
Published: October 22, 2026
Security Bulletin ID
SB20261022262
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Information disclosure
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Use of uninitialized resource (CVE-ID: CVE-2026-98668)
CWE-ID: CWE-908 - Use of Uninitialized Resource
CVSSv4: 4.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]
The vulnerability allows a local user to disclose sensitive information from kernel heap memory.
The vulnerability exists due to missing initialization of the bounce buffer in iio_push_to_buffers_with_ts_unaligned() when processing data whose length is not a multiple of 8 bytes with timestamps enabled. A local user can read affected IIO buffer output to obtain uninitialized kernel heap data.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/3a87212b1a09a1fdd730ce5520f7b1fc0b488511
- https://git.kernel.org/stable/c/5330036bc68d23672bfcc16c60c54701ae123083
- https://git.kernel.org/stable/c/b134ef820610bd873c9d59999d9824710964ce82
- https://git.kernel.org/stable/c/b4f53cec8cc94b37601ce0bb2b272b6753beed98
- https://git.kernel.org/stable/c/b5c2f21f645e40c70fda2a4283e6f2a81e5cb9f2