Description
Race condition in the rds_sendmsg function in net/rds/sendmsg.c in the Linux kernel before 4.3.3 allows local users to cause a denial of service (NULL pointer dereference and system crash) or possibly have unspecified other impact by using a socket that was not properly bound. NOTE: this vulnerability exists because of an incomplete fix for CVE-2015-6937.
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 | 4.2.6-1 | — |
| Debian 13 | linux | 4.2.6-1 | — |
| Debian 12 | linux | 4.2.6-1 | — |
| Debian 8 | linux | 3.16.7-ckt11-1+deb8u6 | DSA-3396-1 |
| Debian 7 | linux | 3.2.68-1+deb7u6 | DSA-3396-1 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 6.0 | linux-2.6 | 2.6.32-48squeeze17 | DLA-360-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 14.04 LTS | linux | 3.13.0-77.121 | USN-2887-1 |
| Ubuntu 14.04 LTS | linux-lts-utopic | 3.16.0-60.80~14.04.1 | USN-2888-1 |
| Ubuntu 14.04 LTS | linux-lts-vivid | 3.19.0-49.55~14.04.1 | USN-2889-2 |
| Ubuntu 14.04 LTS | linux-lts-wily | 4.2.0-27.32~14.04.1 | USN-2890-2 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 SP1 | kernel-obs-build | 3.12.51-60.20.1 | SUSE-SU-2015:2292-1 |
| SLES 12 SP1 | kernel-xen +4 | 3.12.51-60.20.2 | SUSE-SU-2015:2292-1 |
| SLES 12 | kernel-docs | 3.12.51-52.31.5 | SUSE-SU-2015:2194-1 |
| SLES 12 | kernel-ec2 +5 | 3.12.51-52.31.1 | SUSE-SU-2015:2292-1, SUSE-SU-2015:2194-1 |
| SLES 11 SP4 | kernel-docs | 3.0.101-68.2 | SUSE-SU-2015:2339-1 |
| SLES 11 SP4 | kernel-ec2 +7 | 3.0.101-68.1 | SUSE-SU-2015:2339-1 |
| SLES 11 SP3 | kernel-docs | 3.0.101-0.47.71.3 | SUSE-SU-2015:2108-1 |
| SLES 11 SP3 | kernel-ec2 +8 | 3.0.101-0.47.71.1 | SUSE-SU-2015:2108-1 |
| SLES 11 SP2 | kernel-ec2 +6 | 3.0.101-0.7.40.1 | SUSE-SU-2016:2074-1 |
Show 7 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 12 SP1 | kernel-xen +3 | 3.12.51-60.20.2 | SUSE-SU-2015:2292-1 |
| SLES for SAP 12 | kernel-xen +3 | 3.12.51-52.31.1 | SUSE-SU-2015:2194-1 |
| SLES for SAP 11 SP4 | kernel-ec2 +7 | 3.0.101-68.1 | SUSE-SU-2015:2339-1 |
| SLES for SAP 11 SP3 | kernel-ec2 +8 | 3.0.101-0.47.71.1 | SUSE-SU-2015:2108-1 |
| SLE Real Time 11 SP4 | kernel-rt +3 | 3.0.101.rt130-48.1 | SUSE-SU-2015:2350-1 |
| SLE Real Time 11 SP3 | kernel-rt +2 | 3.0.101.rt130-0.33.44.2 | SUSE-SU-2016:0354-1 |
| SLE Real Time 11 SP3 | kernel-syms-rt | 3.0.101.rt130-0.33.44.1 | SUSE-SU-2016:0354-1 |
| SLE Live Patching 12 | kgraft-patch-SLE12-SP1_Update_0 | 2-5.1 | SUSE-SU-2016:0335-1 |
| SLE Live Patching 12 | kgraft-patch-SLE12-SP1_Update_1 | 1-4.1 | SUSE-SU-2015:2292-1 |
| SLE Live Patching 12 | kgraft-patch-SLE12_Update_1 +1 | 5-2.1 | SUSE-SU-2016:0434-1, SUSE-SU-2016:0384-1 |
| SLE Live Patching 12 | kgraft-patch-SLE12_Update_3 +2 | 4-2.1 | SUSE-SU-2016:0383-1, SUSE-SU-2016:0381-1, SUSE-SU-2016:0380-1 |
| SLE Live Patching 12 | kgraft-patch-SLE12_Update_6 +1 | 3-2.1 | SUSE-SU-2016:0387-1, SUSE-SU-2016:0386-1 |
| SLE Live Patching 12 | kgraft-patch-SLE12_Update_8 | 2-2.1 | SUSE-SU-2016:0337-1 |
| SLE Live Patching 12 | kgraft-patch-SLE12_Update_9 | 1-2.2 | SUSE-SU-2015:2194-1 |
Advisories 22
- USN-2887-1 linux vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
- DLA-360-1 linux-2.6 - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DSA-3396-1 linux - security update Debian Security (DSA / DLA) · Mar 9, 2026
- USN-2888-1 linux-lts-utopic vulnerabilities Ubuntu Security Notices (USN) · Feb 10, 2026
- USN-2889-2 linux-lts-vivid vulnerabilities Ubuntu Security Notices (USN) · Feb 10, 2026
- USN-2890-2 linux-lts-wily vulnerabilities Ubuntu Security Notices (USN) · Feb 10, 2026
- SUSE-SU-2015:2194-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2015:2339-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2016:0384-1 Security update for kernel live patch 2 SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2016:0335-1 Security update for kernel live patch SP1 0 SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2016:0383-1 Security update for kernel live patch 5 SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2016:0387-1 Security update for kernel live patch 7 SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2016:0434-1 Security update for kernel live patch 1 SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2015:2108-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2016:0354-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2016:0386-1 Security update for kernel live patch 6 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-2016:0337-1 Security update for kernel live patch 8 SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2016:0381-1 Security update for kernel live patch 4 SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2016:0380-1 Security update for kernel live patch 3 SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2015:2292-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2015:2350-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
References
- SUSE-SU-2015:2292 vendor-advisory
- SUSE-SU-2016:0337 vendor-advisory
- SUSE-SU-2015:2350 vendor-advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1276437
- SUSE-SU-2016:0434 vendor-advisory
- USN-2887-2 vendor-advisory
- [linux-kernel] 20151016 [PATCH] RDS: fix race condition when sending a message on unbound socket. mailing-list
- 1034453 vdb-entry
- USN-2886-1 vendor-advisory
- USN-2887-1 vendor-advisory
- https://bugzilla.suse.com/show_bug.cgi?id=952384
- SUSE-SU-2015:2194 vendor-advisory
- USN-2890-3 vendor-advisory
- openSUSE-SU-2015:2232 vendor-advisory
- SUSE-SU-2016:0380 vendor-advisory
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=8c7188b23474cca017b3ef354c4a58456f68303a
- USN-2889-1 vendor-advisory
- SUSE-SU-2016:0354 vendor-advisory
- SUSE-SU-2016:0335 vendor-advisory
- SUSE-SU-2015:2339 vendor-advisory
- SUSE-SU-2015:2108 vendor-advisory
- USN-2889-2 vendor-advisory
- [oss-security] 20151027 Re: CVE-2015-6937 - Linux kernel - NULL pointer dereference in net/rds/connection.c mailing-list
- http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.3.3
- SUSE-SU-2016:0383 vendor-advisory
- SUSE-SU-2016:0386 vendor-advisory
- http://www.oracle.com/technetwork/security-advisory/cpuoct2018-4428296.html
- SUSE-SU-2016:2074 vendor-advisory
- USN-2890-2 vendor-advisory
- 77340 vdb-entry
- SUSE-SU-2016:0384 vendor-advisory
- DSA-3396 vendor-advisory
- https://github.com/torvalds/linux/commit/8c7188b23474cca017b3ef354c4a58456f68303a
- USN-2890-1 vendor-advisory
- SUSE-SU-2016:0387 vendor-advisory
- SUSE-SU-2016:0381 vendor-advisory
- USN-2888-1 vendor-advisory