Description
The Crypto API in the Linux kernel before 3.18.5 allows local users to load arbitrary kernel modules via a bind system call for an AF_ALG socket with a parenthesized module template expression in the salg_name field, as demonstrated by the vfat(aes) expression, a different vulnerability than CVE-2013-7421.
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 | 3.16.7-ckt4-2 | — |
| Debian 13 | linux | 3.16.7-ckt4-2 | — |
| Debian 12 | linux | 3.16.7-ckt4-2 | — |
| Debian 7 | linux | 3.2.65-1+deb7u2 | DSA-3170-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 14.04 LTS | linux | 3.13.0-48.80 | USN-2544-1 |
| Ubuntu 14.04 LTS | linux-lts-utopic | 3.16.0-33.44~14.04.1 | USN-2545-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 7 | kernel-rt +7 | 3.10.0-327.rt56.204.el7 | RHSA-2015:2411 |
| RHEL 7 | perf +18 | 3.10.0-327.el7 | RHSA-2015:2152 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Red Hat MRG 2 | kernel-rt +10 | 1:3.10.0-327.rt56.170.el6rt | RHSA-2016:0068 |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 7 | dtrace-modules-3.8.13-68.el6uek | 0.4.3-4.el6 | ELSA-2015-3012 |
| Oracle Linux 7 | dtrace-modules-3.8.13-68.el7uek | 0.4.3-4.el7 | ELSA-2015-3012 |
| Oracle Linux 7 | kernel-uek +5 | 3.8.13-68.el7uek | ELSA-2015-3012 |
| Oracle Linux 7 | perf +11 | 3.10.0-327.el7 | ELSA-2015-2152 |
Advisories 8
- RHSA-2016:0068 Red Hat Security Advisory: kernel-rt security update Red Hat Security Advisories (RHSA) · Jun 29, 2026
- RHSA-2015:2411 Red Hat Security Advisory: kernel-rt security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Jun 29, 2026
- RHSA-2015:2152 Red Hat Security Advisory: kernel security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Jun 29, 2026
- USN-2544-1 linux vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
- DSA-3170-1 linux - security update Debian Security (DSA / DLA) · Mar 9, 2026
- USN-2545-1 linux-lts-utopic vulnerabilities Ubuntu Security Notices (USN) · Feb 10, 2026
- ELSA-2015-2152 Important: kernel security, bug fix, and enhancement update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Nov 24, 2015
- ELSA-2015-3012 Important: Unbreakable Enterprise kernel security and bugfix update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Mar 19, 2015
References
- https://plus.google.com/+MathiasKrause/posts/PqFCo4bfrWu
- RHSA-2016:0068 vendor-advisory
- USN-2544-1 vendor-advisory
- DSA-3170 vendor-advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1190546
- [oss-security] 20150124 Re: CVE Request: Linux kernel crypto api unprivileged arbitrary module load mailing-list
- USN-2546-1 vendor-advisory
- http://www.oracle.com/technetwork/topics/security/linuxbulletinjan2016-2867209.html
- USN-2514-1 vendor-advisory
- MDVSA-2015:057 vendor-advisory
- http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html
- http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.18.5
- MDVSA-2015:058 vendor-advisory
- 72320 vdb-entry
- https://github.com/torvalds/linux/commit/4943ba16bbc2db05115707b3ff7b4874e9e3c560
- USN-2545-1 vendor-advisory
- USN-2513-1 vendor-advisory
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=4943ba16bbc2db05115707b3ff7b4874e9e3c560
- USN-2543-1 vendor-advisory