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.

References

• https://nvd.nist.gov/vuln/detail/CVE-2014-7822
• torvalds/linux@8d02076
• https://bugzilla.redhat.com/show_bug.cgi?id=1163792
• http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=8d0207652cbe27d1f962050737848e5ad4671958
• http://lists.opensuse.org/opensuse-security-announce/2015-03/msg00020.html
• http://lists.opensuse.org/opensuse-security-announce/2015-04/msg00009.html
• http://lists.opensuse.org/opensuse-security-announce/2015-04/msg00015.html
• http://lists.opensuse.org/opensuse-security-announce/2015-09/msg00008.html
• http://lists.opensuse.org/opensuse-security-announce/2015-09/msg00009.html
• http://rhn.redhat.com/errata/RHSA-2015-0102.html
• http://rhn.redhat.com/errata/RHSA-2015-0164.html
• http://rhn.redhat.com/errata/RHSA-2015-0674.html
• http://rhn.redhat.com/errata/RHSA-2015-0694.html
• http://www.debian.org/security/2015/dsa-3170
• http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html
• http://www.osvdb.org/117810
• http://www.securityfocus.com/bid/72347
• http://www.ubuntu.com/usn/USN-2541-1
• http://www.ubuntu.com/usn/USN-2542-1
• http://www.ubuntu.com/usn/USN-2543-1
• http://www.ubuntu.com/usn/USN-2544-1
• http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=8d0207652cbe27d1f962050737848e5ad4671958
• https://www.exploit-db.com/exploits/36743