Description
Buffer overflow in the __nfs4_get_acl_uncached function in fs/nfs/nfs4proc.c in the Linux kernel before 3.7.2 allows local users to cause a denial of service (memory corruption and system crash) or possibly have unspecified other impact via a getxattr system call for the system.nfs4_acl extended attribute of a pathname on an NFSv4 filesystem.
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.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | linux | 3.8-1 | — |
| Debian 13 | linux | 3.8-1 | — |
| Debian 12 | linux | 3.8-1 | — |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 6 | perf +16 | 2.6.32-431.el6 | RHSA-2013:1645 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 6.4 EUS | perf +14 | 2.6.32-358.37.1.el6 | RHSA-2014:0284 |
Advisories 2
- RHSA-2014:0284 Red Hat Security Advisory: kernel security and bug fix update Red Hat Security Advisories (RHSA) · Jun 28, 2026
- RHSA-2013:1645 Red Hat Security Advisory: Red Hat Enterprise Linux 6 kernel update Red Hat Security Advisories (RHSA) · Jun 28, 2026
References
- 63791 vdb-entry
- [oss-security] 20131118 CVE-2013-4591 -- Linux kernel: kernel: nfs: missing check for buffer length in __nfs4_get_acl_uncached mailing-list
- RHSA-2013:1645 vendor-advisory
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=7d3e91a89b7adbc2831334def9e494dd9892f9af
- https://github.com/torvalds/linux/commit/7d3e91a89b7adbc2831334def9e494dd9892f9af
- http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.7.2
- https://bugzilla.redhat.com/show_bug.cgi?id=1031678
- RHSA-2014:0284 vendor-advisory