CVE-2014-7822

Published: 16 March 2015

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.

From the Ubuntu Security Team

The Linux kernel's splice system call did not correctly validate its parameters. A local, unprivileged user could exploit this flaw to cause a denial of service (system crash).

Notes

android kernels (flo, goldfish, grouper, maguro, mako and manta) are
not supported on the Ubuntu Touch 14.04 preview kernels
linux-lts-saucy no longer receives official support
linux-lts-quantal no longer receives official support

Status

References

• https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-7822
• https://ubuntu.com/security/notices/USN-2541-1
• https://ubuntu.com/security/notices/USN-2542-1
• https://ubuntu.com/security/notices/USN-2543-1
• https://ubuntu.com/security/notices/USN-2544-1
• NVD
• Launchpad
• Debian

Bugs

• https://launchpad.net/bugs/1416498