SB2026091292 - Out-of-bounds read in Linux kernel nfsd
Published: September 12, 2026
Security Bulletin ID
SB2026091292
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-2026-89698)
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 disclose sensitive information.
The vulnerability exists due to an out-of-bounds read in nfsd_genl_rpc_status_compose_msg() when handling IPv6 NFS client addresses. A local user can request RPC status information through the generic netlink interface to disclose sensitive information.
The IPv6 netlink address attributes can include rq_flags data in place of part of an IPv6 address.
Remediation
Install update from vendor's website.