SB2026092821 - Memory leak in Linux kernel smb server
Published: September 28, 2026 Updated: September 30, 2026
Security Bulletin ID
SB2026092821
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Partial DoS
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Memory leak (CVE-ID: CVE-2026-98162)
CWE-ID: CWE-401 - Missing release of memory after effective lifetime
CVSSv4: 6.3 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]
The vulnerability allows a remote attacker to cause a denial of service.
The vulnerability exists due to improper resource cleanup in smb2_tree_connect() when response buffer pinning fails while handling SMB2 tree connect requests. A remote attacker can repeatedly send SMB2 tree connect requests during response buffer pinning failures to cause a denial of service.
Remediation
Install update from vendor's website.