SB20260928207 - Out-of-bounds read in Linux kernel vhost driver
Published: September 28, 2026 Updated: September 30, 2026
Security Bulletin ID
SB20260928207
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) Out-of-bounds read (CVE-ID: CVE-2026-97994)
CWE-ID: CWE-125 - Out-of-bounds read
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 read memory beyond the mapped descriptor ring.
The vulnerability exists due to an out-of-bounds read in the vhost/vdpa VHOST_SET_VRING_NUM handling when configuring a virtual ring queue size larger than the device maximum. A local user can set a queue size exceeding the advertised maximum to read memory beyond the mapped descriptor ring.
Remediation
Install update from vendor's website.