Description
The (1) pptp_bind and (2) pptp_connect functions in drivers/net/ppp/pptp.c in the Linux kernel through 4.3.3 do not verify an address length, which allows local users to obtain sensitive information from kernel memory and bypass the KASLR protection mechanism via a crafted application.
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 | 4.3.3-3 | — |
| Debian 13 | linux | 4.3.3-3 | — |
| Debian 12 | linux | 4.3.3-3 | — |
| Debian 8 | linux | 3.16.7-ckt20-1+deb8u2 | DSA-3434-1 |
| Debian 7 | linux | 3.2.73-2+deb7u2 | DSA-3434-1 |
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 | 3.13.0-79.123 | USN-2907-1 |
| 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 | 3.19.0-51.57~14.04.1 | USN-2910-1 |
| Ubuntu 14.04 LTS | linux-lts-wily | 4.2.0-27.32~14.04.1 | USN-2890-2 |
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 | — |
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 | 3.12.51-52.34.3 | SUSE-SU-2016:0168-1 |
| SLES 12 | kernel-ec2 +5 | 3.12.51-52.34.1 | SUSE-SU-2016:0585-1, SUSE-SU-2016:0168-1 |
| 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 | 3.12.51-52.34.1 | SUSE-SU-2016:0168-1 |
| 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_10 +1 | 1-2.1 | SUSE-SU-2016:0585-1, SUSE-SU-2016:0168-1 |
| 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-3.8.13-118.17.4.el6uek | 0.4.5-3.el6 | ELSA-2017-3534 |
| Oracle Linux 7 | dtrace-modules-3.8.13-118.17.4.el7uek | 0.4.5-3.el7 | ELSA-2017-3534 |
| Oracle Linux 7 | kernel-uek +5 | 3.8.13-118.17.4.el7uek | ELSA-2017-3534 |
Advisories 12
- USN-2907-1 linux vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
- DSA-3434-1 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-2890-2 linux-lts-wily vulnerabilities Ubuntu Security Notices (USN) · Feb 10, 2026
- USN-2910-1 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-2016:0168-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · May 2, 2025
- ELSA-2017-3534 Important: Unbreakable Enterprise kernel security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Mar 31, 2017
References
- [oss-security] 20151215 Re: CVE Request: Linux Kernel: information leak from getsockname mailing-list
- USN-2886-1 vendor-advisory
- USN-2890-3 vendor-advisory
- 79428 vdb-entry
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=09ccfd238e5a0e670d8178cf50180ea81ae09ae1
- http://twitter.com/grsecurity/statuses/676744240802750464
- SUSE-SU-2016:1102 vendor-advisory
- [linux-kernel] 20151214 Information leak in pptp_bind mailing-list
- FEDORA-2016-5d43766e33 vendor-advisory
- SUSE-SU-2016:2074 vendor-advisory
- USN-2890-2 vendor-advisory
- https://github.com/torvalds/linux/commit/09ccfd238e5a0e670d8178cf50180ea81ae09ae1
- 1034549 vdb-entry
- https://bugzilla.redhat.com/show_bug.cgi?id=1292045
- USN-2890-1 vendor-advisory
- DSA-3434 vendor-advisory
- USN-2888-1 vendor-advisory
- SUSE-SU-2016:0911 vendor-advisory