CVE-2014-7822 Denial of service in n/a
Local attackers can crash the Linux kernel via a crafted splice system call on ext4 filesystems, requiring a kernel patch.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2014-7822?
CVE-2014-7822 is a high-severity denial of service vulnerability in Linux kernel, published on 16 Mar 2015. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
The implementation of certain splice_write file operations in the Linux kernel before 3.16 does not enforce a restriction on the maximum size of a single file, which allows local users to cause a denial of service (system crash) or possibly have unspecified other impact via a crafted splice system call, as demonstrated by use of a file descriptor associated with an ext4 filesystem.
Weakness: CWE-264
Which versions are affected by CVE-2014-7822?
It affects 1 product.
Linux distribution packages (33)
kernel Red Hat:enterprise_linux:5::client | All versions | 0:2.6.18-402.el5 |
kernel-PAE Red Hat:enterprise_linux:5::client | All versions | 0:2.6.18-402.el5 |
kernel-PAE-debuginfo Red Hat:enterprise_linux:5::client | All versions | 0:2.6.18-402.el5 |
kernel-PAE-devel Red Hat:enterprise_linux:5::client | All versions | 0:2.6.18-402.el5 |
kernel-debug Red Hat:enterprise_linux:5::client | All versions | 0:2.6.18-402.el5 |
kernel-debug-debuginfo Red Hat:enterprise_linux:5::client | All versions | 0:2.6.18-402.el5 |
kernel-debug-devel Red Hat:enterprise_linux:5::client | All versions | 0:2.6.18-402.el5 |
kernel-debuginfo Red Hat:enterprise_linux:5::client | All versions | 0:2.6.18-402.el5 |
kernel-debuginfo-common Red Hat:enterprise_linux:5::client | All versions | 0:2.6.18-402.el5 |
kernel-devel Red Hat:enterprise_linux:5::client | All versions | 0:2.6.18-402.el5 |
kernel-doc Red Hat:enterprise_linux:5::client | All versions | 0:2.6.18-402.el5 |
kernel-headers Red Hat:enterprise_linux:5::client | All versions | 0:2.6.18-402.el5 |
kernel-xen Red Hat:enterprise_linux:5::client | All versions | 0:2.6.18-402.el5 |
kernel-xen-debuginfo Red Hat:enterprise_linux:5::client | All versions | 0:2.6.18-402.el5 |
kernel-xen-devel Red Hat:enterprise_linux:5::client | All versions | 0:2.6.18-402.el5 |
kernel Red Hat:enterprise_linux:5::server | All versions | 0:2.6.18-402.el5 |
kernel-PAE Red Hat:enterprise_linux:5::server | All versions | 0:2.6.18-402.el5 |
kernel-PAE-debuginfo Red Hat:enterprise_linux:5::server | All versions | 0:2.6.18-402.el5 |
kernel-PAE-devel Red Hat:enterprise_linux:5::server | All versions | 0:2.6.18-402.el5 |
kernel-debug Red Hat:enterprise_linux:5::server | All versions | 0:2.6.18-402.el5 |
kernel-debug-debuginfo Red Hat:enterprise_linux:5::server | All versions | 0:2.6.18-402.el5 |
kernel-debug-devel Red Hat:enterprise_linux:5::server | All versions | 0:2.6.18-402.el5 |
kernel-debuginfo Red Hat:enterprise_linux:5::server | All versions | 0:2.6.18-402.el5 |
kernel-debuginfo-common Red Hat:enterprise_linux:5::server | All versions | 0:2.6.18-402.el5 |
kernel-devel Red Hat:enterprise_linux:5::server | All versions | 0:2.6.18-402.el5 |
kernel-doc Red Hat:enterprise_linux:5::server | All versions | 0:2.6.18-402.el5 |
kernel-headers Red Hat:enterprise_linux:5::server | All versions | 0:2.6.18-402.el5 |
kernel-kdump Red Hat:enterprise_linux:5::server | All versions | 0:2.6.18-402.el5 |
kernel-kdump-debuginfo Red Hat:enterprise_linux:5::server | All versions | 0:2.6.18-402.el5 |
kernel-kdump-devel Red Hat:enterprise_linux:5::server | All versions | 0:2.6.18-402.el5 |
kernel-xen Red Hat:enterprise_linux:5::server | All versions | 0:2.6.18-402.el5 |
kernel-xen-debuginfo Red Hat:enterprise_linux:5::server | All versions | 0:2.6.18-402.el5 |
kernel-xen-devel Red Hat:enterprise_linux:5::server | All versions | 0:2.6.18-402.el5 |
Products include Linux kernel.
How do I fix CVE-2014-7822?
Apply the vendor's patch.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2014-7822 being exploited?
There is no known exploitation of CVE-2014-7822 in the wild and no public exploit code.
Public exploit code: 1 Exploit-DB entry.
Other vulnerabilities in Linux kernel
Sources
Also known as DEBIAN-CVE-2014-7822, GHSA-wjhv-8fw8-jxw2, RHSA-2015:0164, UBUNTU-CVE-2014-7822.