Description
The sctp_do_peeloff function in net/sctp/socket.c in the Linux kernel before 4.14 does not check whether the intended netns is used in a peel-off action, which allows local users to cause a denial of service (use-after-free and system crash) or possibly have unspecified other impact via crafted system calls.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| — | Linux kernel before 4.14-rc6 | Linux kernel before 4.14-rc6 | — |
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 | 4.13.13-1 | — |
| Debian 13 | linux | 4.13.13-1 | — |
| Debian 12 | linux | 4.13.13-1 | — |
| Debian 7 | linux | 3.2.96-1 | DLA-1200-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 24.04 LTS | linux-gcp-6.11 +4 | No fix yet | — |
| Ubuntu 22.04 LTS | linux-riscv +2 | No fix yet | — |
| Ubuntu 20.04 LTS | linux-gke +3 | No fix yet | — |
| Ubuntu 16.04 LTS | linux | 4.4.0-116.140 | USN-3582-1 |
| Ubuntu 16.04 LTS | linux-aws | 4.4.0-1052.61 | USN-3582-1 |
| Ubuntu 16.04 LTS | linux-azure | 4.13.0-1011.14 | USN-3581-2 |
| Ubuntu 16.04 LTS | linux-gcp | 4.13.0-1011.15 | USN-3581-2 |
| Ubuntu 16.04 LTS | linux-hwe | 4.13.0-41.46~16.04.1 | USN-3581-2 |
| Ubuntu 16.04 LTS | linux-kvm | 4.4.0-1019.24 | USN-3582-1 |
| Ubuntu 16.04 LTS | linux-oem | 4.13.0-1021.23 | USN-3581-2 |
| Ubuntu 16.04 LTS | linux-raspi2 | 4.4.0-1085.93 | USN-3582-1 |
| Ubuntu 16.04 LTS | linux-snapdragon | 4.4.0-1087.92 | USN-3582-1 |
| Ubuntu 14.04 LTS | linux | 3.13.0-142.191 | USN-3583-1 |
| Ubuntu 14.04 LTS | linux-aws | 4.4.0-1014.14 | USN-3582-2 |
| Ubuntu 14.04 LTS | linux-lts-xenial | 4.4.0-116.140~14.04.1 | USN-3582-2 |
Show 2 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro FIPS-updates 16.04 LTS | linux-fips | 4.4.0-1005.5 | — |
| Ubuntu Pro 20.04 LTS | linux-azure-fde-5.15 | No fix yet | — |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 SP3 | kernel-docs +4 | 4.4.103-6.33.1 | SUSE-SU-2017:3398-1 |
| SLES 12 SP2 | kernel-docs +4 | 4.4.103-92.53.1 | SUSE-SU-2017:3410-1 |
| SLES 12 SP1 | kernel-xen +3 | 3.12.74-60.64.69.1 | SUSE-SU-2018:0031-1 |
| SLES 12 SP1 | kgraft-patch-SLE12-SP1_Update_24 | 1-2.3.1 | SUSE-SU-2018:0031-1 |
| SLES 12 | kernel-ec2 +4 | 3.12.61-52.111.1 | SUSE-SU-2018:0115-1, SUSE-SU-2018:0031-1 |
| SLES 11 SP4 | kernel-docs | 3.0.101-108.21.2 | SUSE-SU-2018:0011-1 |
| SLES 11 SP4 | kernel-ec2 +8 | 3.0.101-108.21.1 | SUSE-SU-2018:0011-1 |
Show 11 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 11 SP3 | kernel-ec2 +7 | 3.0.101-0.47.106.11.1 | SUSE-SU-2018:0040-1 |
| SLES for SAP 12 SP3 | kernel-syms +2 | 4.4.103-6.33.1 | SUSE-SU-2017:3398-1 |
| SLES for SAP 12 SP2 | kernel-syms +2 | 4.4.103-92.53.1 | SUSE-SU-2017:3410-1 |
| SLES for SAP 12 SP1 | kernel-xen +3 | 3.12.74-60.64.69.1 | SUSE-SU-2018:0031-1 |
| SLES for SAP 12 SP1 | kgraft-patch-SLE12-SP1_Update_24 | 1-2.3.1 | SUSE-SU-2018:0031-1 |
| SLES for SAP 11 SP4 | kernel-ec2 +8 | 3.0.101-108.21.1 | SUSE-SU-2018:0011-1 |
| SLE Real Time 12 SP2 | kernel-rt +3 | 4.4.104-24.1 | SUSE-SU-2018:0213-1 |
| SLE Real Time 11 SP4 | kernel-rt +3 | 3.0.101.rt130-69.14.1 | SUSE-SU-2018:0180-1 |
| SLE Live Patching 12 SP3 | kgraft-patch-SLE12-SP3_Update_6 | 1-4.3.1 | SUSE-SU-2017:3398-1 |
| SLE Live Patching 12 | kgraft-patch-SLE12-SP2_Update_16 | 1-3.3.1 | SUSE-SU-2017:3410-1 |
| SUSE OpenStack Cloud 6 | kernel-xen +3 | 3.12.74-60.64.69.1 | SUSE-SU-2018:0031-1 |
| SUSE OpenStack Cloud 6 | kgraft-patch-SLE12-SP1_Update_24 | 1-2.3.1 | SUSE-SU-2018:0031-1 |
| SUSE Linux Enterprise Point of Sale 11 SP3 | kernel-ec2 +6 | 3.0.101-0.47.106.11.1 | SUSE-SU-2018:0040-1 |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 7 | kernel-uek +5 | 4.1.12-112.14.14.el7uek | ELSA-2018-4025 |
Advisories 14
- USN-3583-1 linux vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
- USN-3582-1 linux, linux-aws, linux-kvm, linux-raspi2, linux-snapdragon vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
- DLA-1200-1 linux - security update Debian Security (DSA / DLA) · Mar 9, 2026
- USN-3581-2 linux-hwe, linux-azure, linux-gcp, linux-oem vulnerabilities Ubuntu Security Notices (USN) · Feb 10, 2026
- USN-3582-2 linux-lts-xenial, linux-aws vulnerabilities Ubuntu Security Notices (USN) · Feb 10, 2026
- SUSE-SU-2017:3410-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2018:0213-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2018:0115-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2017:3398-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2018:0040-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2018:0031-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2018:0180-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2018:0011-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- ELSA-2018-4025 Important: Unbreakable Enterprise kernel security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Feb 7, 2018
References
- https://bugzilla.redhat.com/show_bug.cgi?id=1513345
- https://github.com/torvalds/linux/commit/df80cd9b28b9ebaa284a41df611dbf3a2d05ca74
- [debian-lts-announce] 20171210 [SECURITY] [DLA 1200-1] linux security update mailing-list
- USN-3583-2 vendor-advisory
- SUSE-SU-2018:0011 vendor-advisory
- https://patchwork.ozlabs.org/patch/827077/
- USN-3582-1 vendor-advisory
- https://source.android.com/security/bulletin/pixel/2018-04-01
- USN-3583-1 vendor-advisory
- 101877 vdb-entry
- USN-3581-1 vendor-advisory
- USN-3581-3 vendor-advisory
- USN-3581-2 vendor-advisory
- http://seclists.org/oss-sec/2017/q4/282
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=df80cd9b28b9ebaa284a41df611dbf3a2d05ca74
- USN-3582-2 vendor-advisory