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.
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 | 3.16.3-1 | — |
| Debian 13 | linux | 3.16.3-1 | — |
| Debian 12 | linux | 3.16.3-1 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 14.04 LTS | linux | 3.13.0-37.64 | USN-2379-1 |
Advisories 1
- USN-2379-1 linux vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
References
- USN-2377-1 vendor-advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1142072
- https://github.com/torvalds/linux/commit/c27a3e4d667fdcad3db7b104f75659478e0c68d8
- [oss-security] 20140915 Re: CVE Request: libceph auth token overflow / Linux kernel mailing-list
- USN-2378-1 vendor-advisory
- http://tracker.ceph.com/issues/9560
- http://tracker.ceph.com/issues/8979
- USN-2379-1 vendor-advisory
- http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.16.3
- USN-2376-1 vendor-advisory
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=c27a3e4d667fdcad3db7b104f75659478e0c68d8