Description
fs/nfs/nfs4proc.c in the NFS client in the Linux kernel before 4.2.2 does not properly initialize memory for migration recovery operations, which allows remote NFS servers to cause a denial of service (NULL pointer dereference and panic) via crafted network traffic.
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 | 4.3.1-1 | — |
| Debian 13 | linux | 4.3.1-1 | — |
| Debian 12 | linux | 4.3.1-1 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 14.04 LTS | linux | 3.13.0-70.113 | — |
| Ubuntu 14.04 LTS | linux-lts-utopic | 3.16.0-52.71~14.04.1 | — |
| Ubuntu 14.04 LTS | linux-lts-vivid | 3.19.0-37.42~14.04.1 | — |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 7 | kernel-rt +10 | 3.10.0-514.rt56.420.el7 | RHSA-2016:2584 |
| RHEL 7 | perf +18 | 3.10.0-514.el7 | RHSA-2016:2574 |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 7 | perf +11 | 3.10.0-514.el7 | ELSA-2016-2574 |
Advisories 3
- RHSA-2016:2584 Red Hat Security Advisory: kernel-rt security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Jun 29, 2026
- RHSA-2016:2574 Red Hat Security Advisory: kernel security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Jun 29, 2026
- ELSA-2016-2574 Important: kernel security, bug fix, and enhancement update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Nov 9, 2016
References
- https://bugzilla.redhat.com/show_bug.cgi?id=1295802
- https://github.com/torvalds/linux/commit/18e3b739fdc826481c6a1335ce0c5b19b3d415da
- RHSA-2016:2584 vendor-advisory
- RHSA-2016:2574 vendor-advisory
- 1034594 vdb-entry
- [oss-security] 20160105 CVE request -- linux kernel: nfs: kernel panic occurs at nfs client when nfsv4.2 migration is executed mailing-list
- http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.2.2
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=18e3b739fdc826481c6a1335ce0c5b19b3d415da