Description
Race condition in the IPC object implementation in the Linux kernel through 4.2.3 allows local users to gain privileges by triggering an ipc_addid call that leads to uid and gid comparisons against uninitialized data, related to msg.c, shm.c, and util.c.
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 | 4.2.3-1 | — |
| Debian 13 | linux | 4.2.3-1 | — |
| Debian 12 | linux | 4.2.3-1 | — |
| Debian 8 | linux | 3.16.7-ckt11-1+deb8u5 | DSA-3372-1 |
| Debian 7 | linux | 3.2.68-1+deb7u5 | DSA-3372-1 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 6.0 | linux-2.6 | 2.6.32-48squeeze16 | DLA-325-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 14.04 LTS | linux | 3.13.0-65.106 | USN-2761-1 |
| Ubuntu 14.04 LTS | linux-lts-utopic | 3.16.0-50.67~14.04.1 | USN-2764-1 |
| Ubuntu 14.04 LTS | linux-lts-vivid | 3.19.0-30.34~14.04.1 | USN-2765-1 |
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 |
| RHEL 6 | perf +16 | 2.6.32-573.12.1.el6 | RHSA-2015:2636 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 7.1 EUS | kernel-kdump +4 | 3.10.0-229.24.2.el7 | RHSA-2015:2587 |
| RHEL 7.1 EUS | perf +13 | 3.10.0-229.24.2.ael7b | RHSA-2015:2587 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 | kernel-ec2 +4 | 3.12.48-52.27.1 | SUSE-SU-2015:1727-1 |
| SLES 12 | kernel-xen +1 | 3.12.48-52.27.2 | SUSE-SU-2015:1727-1 |
Show 2 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 12 | kernel-syms +2 | 3.12.48-52.27.1 | SUSE-SU-2015:1727-1 |
| SLES for SAP 12 | kernel-xen | 3.12.48-52.27.2 | SUSE-SU-2015:1727-1 |
| SLE Live Patching 12 | kgraft-patch-SLE12_Update_1 +1 | 4-2.3 | SUSE-SU-2015:2091-1, SUSE-SU-2015:2089-1 |
| SLE Live Patching 12 | kgraft-patch-SLE12_Update_3 +2 | 3-2.1 | SUSE-SU-2015:2090-1, SUSE-SU-2015:2085-1, SUSE-SU-2015:2084-1 |
| SLE Live Patching 12 | kgraft-patch-SLE12_Update_6 | 2-2.1 | SUSE-SU-2015:2087-1 |
| SLE Live Patching 12 | kgraft-patch-SLE12_Update_7 | 2-4.1 | SUSE-SU-2015:2086-1 |
| SLE Live Patching 12 | kgraft-patch-SLE12_Update_8 | 1-2.6 | SUSE-SU-2015:1727-1 |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 7 | dtrace-modules-3.8.13-118.2.1.el6uek | 0.4.5-3.el6 | ELSA-2015-3101 |
| Oracle Linux 7 | dtrace-modules-3.8.13-118.2.1.el7uek | 0.4.5-3.el7 | ELSA-2015-3101 |
| Oracle Linux 7 | kernel-uek +5 | 3.8.13-118.2.1.el7uek | ELSA-2015-3101 |
| Oracle Linux 7 | perf +11 | 3.10.0-327.el7 | ELSA-2015-2152 |
Advisories 19
- RHSA-2015:2636 Red Hat Security Advisory: kernel security and bug fix update Red Hat Security Advisories (RHSA) · Jun 29, 2026
- RHSA-2015:2587 Red Hat Security Advisory: kernel security, bug fix, and enhancement 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-2761-1 linux vulnerability Ubuntu Security Notices (USN) · Apr 22, 2026
- DSA-3372-1 linux - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-325-1 linux-2.6 - security update Debian Security (DSA / DLA) · Mar 9, 2026
- USN-2764-1 linux-lts-utopic vulnerability Ubuntu Security Notices (USN) · Feb 10, 2026
- USN-2765-1 linux-lts-vivid vulnerability Ubuntu Security Notices (USN) · Feb 10, 2026
- SUSE-SU-2015:2091-1 Security update for Linux Kernel Live Patch 2 SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2015:2087-1 Security update for Linux Kernel Live Patch 6 SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2015:2084-1 Security update for Linux Kernel Live Patch 5 SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2015:1727-1 Security update for kernel-source SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2015:2085-1 Security update for Linux Kernel Live Patch 4 SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2015:2086-1 Security update for Linux Kernel Live Patch 7 SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2015:2089-1 Security update for Linux Kernel Live Patch 1 SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2015:2090-1 Security update for Linux Kernel Live Patch 3 SUSE / openSUSE Security Updates · Feb 4, 2026
- ELSA-2015-3101 Important: Unbreakable Enterprise kernel security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Nov 27, 2015
- ELSA-2015-2152 Important: kernel security, bug fix, and enhancement update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Nov 24, 2015
References
- RHSA-2015:2636 vendor-advisory
- DSA-3372 vendor-advisory
- SUSE-SU-2015:2089 vendor-advisory
- USN-2765-1 vendor-advisory
- USN-2792-1 vendor-advisory
- USN-2762-1 vendor-advisory
- SUSE-SU-2015:2087 vendor-advisory
- SUSE-SU-2015:1727 vendor-advisory
- https://github.com/torvalds/linux/commit/b9a532277938798b53178d5a66af6e2915cb27cf
- USN-2763-1 vendor-advisory
- http://www.oracle.com/technetwork/topics/security/linuxbulletinjan2016-2867209.html
- 1034094 vdb-entry
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=b9a532277938798b53178d5a66af6e2915cb27cf
- 1034592 vdb-entry
- https://kc.mcafee.com/corporate/index?page=content&id=SB10146
- http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html
- https://bugzilla.redhat.com/show_bug.cgi?id=1268270
- SUSE-SU-2015:2091 vendor-advisory
- USN-2764-1 vendor-advisory
- [oss-security] 20151001 CVE Request: Unauthorized access to IPC objects with SysV shm mailing-list
- 76977 vdb-entry
- SUSE-SU-2015:2084 vendor-advisory
- SUSE-SU-2015:2085 vendor-advisory
- SUSE-SU-2015:2086 vendor-advisory
- USN-2761-1 vendor-advisory
- SUSE-SU-2015:2090 vendor-advisory