Description
net/sctp/sm_sideeffect.c in the Linux kernel before 4.3 does not properly manage the relationship between a lock and a socket, which allows local users to cause a denial of service (deadlock) via a crafted sctp_accept call.
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 | 4.3.1-1 | — |
| Debian 13 | linux | 4.3.1-1 | — |
| Debian 12 | linux | 4.3.1-1 | — |
| Debian 8 | linux | 3.16.7-ckt20-1+deb8u3 | DSA-3448-1 |
| Debian 6.0 | linux-2.6 | 2.6.32-48squeeze19 | DLA-412-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 24.04 LTS | linux-riscv +6 | No fix yet | — |
| Ubuntu 22.04 LTS | linux-riscv +2 | No fix yet | — |
| Ubuntu 20.04 LTS | linux-gke +4 | No fix yet | — |
| Ubuntu 18.04 LTS | linux-gcp +3 | No fix yet | — |
| Ubuntu 14.04 LTS | linux | 3.13.0-96.143 | USN-3083-1 |
| Ubuntu 14.04 LTS | linux-lts-utopic | 3.16.0-67.87~14.04.1 | USN-2931-1 |
| Ubuntu 14.04 LTS | linux-lts-vivid | 3.19.0-56.62~14.04.1 | USN-2932-1 |
| Ubuntu 14.04 LTS | linux-lts-wily | 4.2.0-34.39~14.04.1 | USN-2930-2 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 20.04 LTS | linux-azure-fde-5.15 | No fix yet | — |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 7 | kernel-rt +10 | 3.10.0-327.22.2.rt56.230.el7_2 | RHSA-2016:1301 |
| RHEL 7 | perf +18 | 3.10.0-327.22.2.el7 | RHSA-2016:1277 |
| RHEL 6 | perf +16 | 2.6.32-573.26.1.el6 | RHSA-2016:0715 |
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.rt56.190.el6rt | RHSA-2016:1341 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 SP1 | kernel-docs +1 | 3.12.53-60.30.2 | SUSE-SU-2016:0585-1 |
| SLES 12 SP1 | kernel-xen +3 | 3.12.53-60.30.1 | SUSE-SU-2016:0585-1 |
| SLES 12 SP1 | lttng-modules | 2.7.0-3.1 | SUSE-SU-2016:0585-1 |
| SLES 12 | kernel-docs +1 | 3.12.55-52.42.2 | SUSE-SU-2016:0785-1 |
| SLES 12 | kernel-ec2 | 3.12.53-60.30.1 | SUSE-SU-2016:0785-1, SUSE-SU-2016:0585-1 |
| SLES 12 | kernel-xen +3 | 3.12.55-52.42.1 | SUSE-SU-2016:0785-1 |
| SLES 11 SP4 | kernel-docs | 3.0.101-71.2 | SUSE-SU-2016:0911-1 |
| SLES 11 SP4 | kernel-ec2 +7 | 3.0.101-71.1 | SUSE-SU-2016:0911-1 |
| SLES 11 SP3 | kernel-ec2 +7 | 3.0.101-0.47.79.1 | SUSE-SU-2016:1203-1 |
| SLES 11 SP2 | kernel-ec2 +6 | 3.0.101-0.7.40.1 | SUSE-SU-2016:2074-1 |
Show 8 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 12 SP1 | kernel-xen +3 | 3.12.53-60.30.1 | SUSE-SU-2016:0585-1 |
| SLES for SAP 12 SP1 | lttng-modules | 2.7.0-3.1 | SUSE-SU-2016:0585-1 |
| SLES for SAP 12 | kernel-xen +3 | 3.12.55-52.42.1 | SUSE-SU-2016:0785-1 |
| SLES for SAP 11 SP4 | kernel-ec2 +7 | 3.0.101-71.1 | SUSE-SU-2016:0911-1 |
| SLE Real Time 11 SP4 | kernel-rt +3 | 3.0.101.rt130-51.1 | SUSE-SU-2016:1102-1 |
| SLE Live Patching 12 | kgraft-patch-SLE12_Update_12 +1 | 1-2.1 | SUSE-SU-2016:0785-1, SUSE-SU-2016:0585-1 |
| SUSE OpenStack Cloud 5 | kernel-ec2 +6 | 3.0.101-0.47.79.1 | SUSE-SU-2016:1203-1 |
| SUSE Manager Proxy 2.1 | kernel-ec2 +6 | 3.0.101-0.47.79.1 | SUSE-SU-2016:1203-1 |
| SUSE Manager 2.1 | kernel-ec2 +6 | 3.0.101-0.47.79.1 | SUSE-SU-2016:1203-1 |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 7 | dtrace-modules-3.8.13-118.6.1.el6uek | 0.4.5-3.el6 | ELSA-2016-3551 |
| Oracle Linux 7 | dtrace-modules-3.8.13-118.6.1.el7uek | 0.4.5-3.el7 | ELSA-2016-3551 |
| Oracle Linux 7 | dtrace-modules-4.1.12-37.2.2.el6uek | 0.5.2-1.el6 | ELSA-2016-3554 |
| Oracle Linux 7 | dtrace-modules-4.1.12-37.2.2.el7uek | 0.5.2-1.el7 | ELSA-2016-3554 |
| Oracle Linux 7 | kernel-uek +5 | 3.8.13-118.6.1.el7uek | ELSA-2016-3554, ELSA-2016-3551 |
| Oracle Linux 7 | perf +11 | 3.10.0-327.22.2.el7 | ELSA-2016-1277 |
Advisories 19
- RHSA-2016:1301 Red Hat Security Advisory: kernel-rt security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Jun 29, 2026
- RHSA-2016:1341 Red Hat Security Advisory: kernel-rt security and bug fix update Red Hat Security Advisories (RHSA) · Jun 29, 2026
- RHSA-2016:1277 Red Hat Security Advisory: kernel security and bug fix update Red Hat Security Advisories (RHSA) · Jun 29, 2026
- RHSA-2016:0715 Red Hat Security Advisory: kernel security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Jun 29, 2026
- USN-3083-1 linux vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
- DLA-412-1 linux-2.6 - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DSA-3448-1 linux - security update Debian Security (DSA / DLA) · Mar 9, 2026
- USN-2930-2 linux-lts-wily vulnerabilities Ubuntu Security Notices (USN) · Feb 10, 2026
- USN-2931-1 linux-lts-utopic vulnerabilities Ubuntu Security Notices (USN) · Feb 10, 2026
- USN-2932-1 linux-lts-vivid vulnerabilities Ubuntu Security Notices (USN) · Feb 10, 2026
- SUSE-SU-2016:0585-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2016:0911-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2016:2074-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2016:1203-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2016:1102-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2016:0785-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · May 2, 2025
- ELSA-2016-1277 Important: kernel security and bug fix update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Jun 23, 2016
- ELSA-2016-3554 Moderate: Unbreakable Enterprise kernel security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · May 5, 2016
- ELSA-2016-3551 Moderate: Unbreakable Enterprise kernel security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · May 4, 2016
References
- USN-2930-1 vendor-advisory
- USN-2967-1 vendor-advisory
- http://www.oracle.com/technetwork/topics/security/linuxbulletinjul2016-3090544.html
- RHSA-2016:1341 vendor-advisory
- http://www.oracle.com/technetwork/topics/security/linuxbulletinapr2016-2952096.html
- RHSA-2016:0715 vendor-advisory
- USN-2930-2 vendor-advisory
- RHSA-2016:1301 vendor-advisory
- [oss-security] 20160111 CVE Request: Linux kernel - SCTP denial of service during heartbeat timeout functions. mailing-list
- DSA-3503 vendor-advisory
- USN-2967-2 vendor-advisory
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=635682a14427d241bab7bbdeebb48a7d7b91638e
- USN-2930-3 vendor-advisory
- SUSE-SU-2016:1102 vendor-advisory
- USN-2932-1 vendor-advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1297389
- FEDORA-2016-5d43766e33 vendor-advisory
- SUSE-SU-2016:2074 vendor-advisory
- 80268 vdb-entry
- https://github.com/torvalds/linux/commit/635682a14427d241bab7bbdeebb48a7d7b91638e
- USN-2931-1 vendor-advisory
- DSA-3448 vendor-advisory
- openSUSE-SU-2016:1008 vendor-advisory
- RHSA-2016:1277 vendor-advisory
- SUSE-SU-2016:0911 vendor-advisory