CVE-2026-89700
kernel: nfsd: validate sockaddr length per family in listener_set
Severity
ModerateRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · September 11, 2026
Updated · October 29, 2026
Description
A flaw was found in the Linux kernel's nfsd component. A local user with CAP_NET_ADMIN capabilities can exploit this by sending a specially crafted network attribute with an incorrect address family length. This can lead to an out-of-bounds read, potentially disclosing sensitive information or causing a denial of service (DoS).
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
No mitigation is specified in collected source.
CVSS / CWE
CVSS 3.1 · 7.1CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
CWE-125 · Out-of-bounds Read