Description
nfs2acl.c in the Linux kernel 2.6.14.4 does not check for MAY_SATTR privilege before setting access controls (ACL) on files on exported NFS filesystems, which allows remote attackers to bypass ACLs for readonly mounted NFS filesystems.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 4 | kernel +8 | 2.6.9-42.EL | RHSA-2006:0575 |
Advisories 1
- RHSA-2006:0575 Red Hat Security Advisory: Updated kernel packages available for Red Hat Enterprise Linux 4 Update 4 Red Hat Security Advisories (RHSA) · Jun 26, 2026
References
- 18788 third-party-advisory
- 19038 third-party-advisory
- SUSE-SA:2006:006 vendor-advisory
- RHSA-2006:0575 vendor-advisory
- oval:org.mitre.oval:def:11707 vdb-entry signature
- http://lkml.org/lkml/2005/12/23/171
- SUSE-SA:2006:012 vendor-advisory
- 21465 third-party-advisory
- http://support.avaya.com/elmodocs2/security/ASA-2006-200.htm
- 22417 third-party-advisory
- 16570 vdb-entry