SB20260928366 - Out-of-bounds read in Linux kernel smb client
Published: September 28, 2026 Updated: September 30, 2026
Security Bulletin ID
SB20260928366
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote 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-2026-97565)
CWE-ID: CWE-125 - Out-of-bounds read
CVSSv4: 0 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:N/SI:N/SA:N]
The vulnerability allows a remote attacker to cause an out-of-bounds read.
The vulnerability exists due to an out-of-bounds read in CIFSSMBRead() when processing a short READ_RSP from an SMB1 server. A remote attacker can return a short READ_RSP to cause an out-of-bounds read.
Exploitation requires an explicit SMB1 mount using vers=1.0, because SMB1 is not negotiated by default.
Remediation
Install update from vendor's website.