CVE-2014-6417

Severity: high (CVSS 7.8 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 5.2% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2014-09-28 · updated 2026-06-17
Weakness: CWE-399

Description

net/ceph/auth_x.c in Ceph, as used in the Linux kernel before 3.16.3, does not properly consider the possibility of kmalloc failure, which allows remote attackers to cause a denial of service (system crash) or possibly have unspecified other impact via a long unencrypted auth ticket.

Affected products

Linux kernel: before 3.4.105; from 3.5 before 3.10.55; from 3.11 before 3.12.29; from 3.13 before 3.14.19; from 3.15 before 3.16.3 — fixed in 3.10.55, 3.12.29, 3.14.19, 3.16.3, 3.4.105

How to fix

Upgrade to a fixed version: Linux kernel 3.10.55, 3.12.29, 3.14.19, 3.16.3. Check the vendor advisory for mitigations.

References

http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=c27a3e4d667fdcad3db7b104f75659478e0c68d8
http://tracker.ceph.com/issues/8979
http://tracker.ceph.com/issues/9560
http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.16.3
http://www.openwall.com/lists/oss-security/2014/09/15/7
http://www.ubuntu.com/usn/USN-2376-1
http://www.ubuntu.com/usn/USN-2377-1
http://www.ubuntu.com/usn/USN-2378-1
http://www.ubuntu.com/usn/USN-2379-1
https://bugzilla.redhat.com/show_bug.cgi?id=1142072
https://github.com/torvalds/linux/commit/c27a3e4d667fdcad3db7b104f75659478e0c68d8
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=c27a3e4d667fdcad3db7b104f75659478e0c68d8

Get alerted when CVE-2014-6417 or the next vulnerability affects your stack