Description
Memory leak in the __key_link_end function in security/keys/keyring.c in the Linux kernel before 4.1.4 allows local users to cause a denial of service (memory consumption) via many add_key system calls that refer to existing keys.
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 | 4.1.3-1 | — |
| Debian 13 | linux | 4.1.3-1 | — |
| Debian 12 | linux | 4.1.3-1 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 14.04 LTS | linux | 3.13.0-59.98 | USN-2688-1 |
| Ubuntu 14.04 LTS | linux-lts-utopic | 3.16.0-45.60~14.04.1 | USN-2689-1 |
| Ubuntu 14.04 LTS | linux-lts-vivid | 3.19.0-25.26~14.04.1 | USN-2690-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 7 | kernel-kdump +4 | 3.10.0-229.14.1.el7 | RHSA-2015:1778 |
| RHEL 7 | kernel-rt +7 | 3.10.0-229.14.1.rt56.141.13.el7_1 | RHSA-2015:1788 |
| RHEL 7 | perf +13 | 3.10.0-229.14.1.ael7b | RHSA-2015:1778 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Red Hat MRG 2 | kernel-rt +10 | 1:3.10.0-229.rt56.161.el6rt | RHSA-2015:1787 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | kernel-source | 4.8.13-1.1 | openSUSE-SU-2024:10128-1 |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 7 | dtrace-modules-3.8.13-98.2.2.el6uek | 0.4.5-3.el6 | ELSA-2015-3078 |
| Oracle Linux 7 | dtrace-modules-3.8.13-98.2.2.el7uek | 0.4.5-3.el7 | ELSA-2015-3078 |
| Oracle Linux 7 | kernel-uek +5 | 3.8.13-98.2.2.el7uek | ELSA-2015-3078 |
| Oracle Linux 7 | perf +11 | 3.10.0-229.14.1.el7 | ELSA-2015-1778 |
Advisories 9
- RHSA-2015:1788 Red Hat Security Advisory: kernel-rt security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Jun 29, 2026
- RHSA-2015:1778 Red Hat Security Advisory: kernel security and bug fix update Red Hat Security Advisories (RHSA) · Jun 29, 2026
- RHSA-2015:1787 Red Hat Security Advisory: kernel-rt security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Jun 29, 2026
- USN-2688-1 linux vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
- USN-2689-1 linux-lts-utopic vulnerabilities Ubuntu Security Notices (USN) · Feb 10, 2026
- USN-2690-1 linux-lts-vivid vulnerabilities Ubuntu Security Notices (USN) · Feb 10, 2026
- openSUSE-SU-2024:10128-1 kernel-debug-4.8.13-1.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- ELSA-2015-3078 Important: Unbreakable Enterprise kernel security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Sep 16, 2015
- ELSA-2015-1778 Important: kernel security and bug fix update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Sep 15, 2015
References
- http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.1.4
- USN-2689-1 vendor-advisory
- USN-2690-1 vendor-advisory
- RHSA-2015:1778 vendor-advisory
- https://github.com/torvalds/linux/commit/ca4da5dd1f99fe9c59f1709fb43e818b18ad20e0
- USN-2691-1 vendor-advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1245658
- DSA-3329 vendor-advisory
- RHSA-2015:1787 vendor-advisory
- http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html
- 76050 vdb-entry
- USN-2688-1 vendor-advisory
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=ca4da5dd1f99fe9c59f1709fb43e818b18ad20e0
- [oss-security] 20150727 Security issue in Linux Kernel Keyring (CVE-2015-1333) mailing-list
- USN-2687-1 vendor-advisory
- https://support.f5.com/csp/article/K05211147