Description
The skb_copy_and_csum_datagram_iovec function in net/core/datagram.c in the Linux kernel 3.14.54 and 3.18.22 does not accept a length argument, which allows local users to cause a denial of service (memory corruption) or possibly have unspecified other impact via a write system call followed by a recvmsg system 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.
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 14.04 LTS | linux | 3.13.0-67.110 | — |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 | kgraft-patch-SLE12_Update_8 +1 | 5-2.2 | SUSE-SU-2016:2005-1, SUSE-SU-2016:1995-1 |
Show 2 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 12 | kgraft-patch-SLE12_Update_8 +1 | 5-2.2 | SUSE-SU-2016:2005-1, SUSE-SU-2016:1995-1 |
| SLE Live Patching 12 | kgraft-patch-SLE12-SP1_Update_0 | 5-14.2 | SUSE-SU-2016:1961-1 |
| SLE Live Patching 12 | kgraft-patch-SLE12-SP1_Update_1 | 5-2.1 | SUSE-SU-2016:1994-1 |
| SLE Live Patching 12 | kgraft-patch-SLE12-SP1_Update_2 | 4-2.1 | SUSE-SU-2016:2009-1 |
Advisories 5
- SUSE-SU-2016:2005-1 Security update for Linux Kernel Live Patch 8 for SLE 12 SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2016:1961-1 Security update for Linux Kernel Live Patch 0 for SLE 12 SP1 SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2016:1995-1 Security update for Linux Kernel Live Patch 9 for SLE 12 SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2016:1994-1 Security update for Linux Kernel Live Patch 1 for SLE 12 SP1 SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2016:2009-1 Security update for Linux Kernel Live Patch 2 for SLE 12 SP1 SUSE / openSUSE Security Updates · Feb 4, 2026
References
- [oss-security] 20151027 CVE Request: Linux kernel: Buffer overflow when copying data from skbuff to userspace mailing-list
- SUSE-SU-2016:1994 vendor-advisory
- SUSE-SU-2016:1961 vendor-advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1276588
- SUSE-SU-2016:2009 vendor-advisory
- http://patchwork.ozlabs.org/patch/530642/
- SUSE-SU-2016:2005 vendor-advisory
- 77326 vdb-entry
- SUSE-SU-2016:1995 vendor-advisory