Description
In the Linux kernel before 5.0, a memory leak exists in sit_init_net() in net/ipv6/sit.c when register_netdev() fails to register sitn->fb_tunnel_dev, which may cause denial of service, aka CID-07f12b26e21a.
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 | 4.19.28-1 | — |
| Debian 13 | linux | 4.19.28-1 | — |
| Debian 12 | linux | 4.19.28-1 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 24.04 LTS | linux-raspi-realtime | No fix yet | — |
| Ubuntu 22.04 LTS | linux-riscv +2 | No fix yet | — |
| Ubuntu 20.04 LTS | linux-gke +2 | No fix yet | — |
| Ubuntu 18.04 LTS | linux | 4.15.0-60.67 | — |
| Ubuntu 18.04 LTS | linux-aws | 4.15.0-1047.49 | — |
| Ubuntu 18.04 LTS | linux-azure | 5.0.0-1014.14~18.04.1 | — |
| Ubuntu 18.04 LTS | linux-gcp | 4.15.0-1042.45 | — |
| Ubuntu 18.04 LTS | linux-gke-4.15 | 4.15.0-1041.43 | — |
| Ubuntu 18.04 LTS | linux-hwe | 5.0.0-23.24~18.04.1 | — |
| Ubuntu 18.04 LTS | linux-kvm | 4.15.0-1043.43 | — |
| Ubuntu 18.04 LTS | linux-oem | 4.15.0-1056.65 | — |
| Ubuntu 18.04 LTS | linux-oracle | 4.15.0-1022.25 | — |
| Ubuntu 18.04 LTS | linux-raspi2 | 4.15.0-1044.47 | — |
| Ubuntu 18.04 LTS | linux-snapdragon | 4.15.0-1062.69 | — |
| Ubuntu 16.04 LTS | linux-aws-hwe | 4.15.0-1047.49~16.04.1 | — |
| Ubuntu 16.04 LTS | linux-azure | 4.15.0-1056.61 | — |
| Ubuntu 16.04 LTS | linux-gcp | 4.15.0-1041.43 | — |
| Ubuntu 16.04 LTS | linux-hwe | 4.15.0-60.67~16.04.1 | — |
| Ubuntu 16.04 LTS | linux-oracle | 4.15.0-1022.25~16.04.1 | — |
Show 3 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro FIPS 18.04 LTS | linux-aws-fips +2 | No fix yet | — |
| Ubuntu Pro FIPS-updates 18.04 LTS | linux-aws-fips | 4.15.0-2018.18 | — |
| Ubuntu Pro FIPS-updates 18.04 LTS | linux-azure-fips | 4.15.0-2006.7 | — |
| Ubuntu Pro 14.04 LTS | linux-azure | 4.15.0-1059.64~14.04.1 | — |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 8 | kernel-rt +12 | 4.18.0-147.rt24.93.el8 | RHSA-2019:3309 |
| RHEL 8 | perf +26 | 4.18.0-147.el8 | RHSA-2019:3517 |
| RHEL 7 | kernel-rt +10 | 3.10.0-1160.rt56.1131.el7 | RHSA-2020:4062 |
| RHEL 7 | perf +18 | 3.10.0-1160.el7 | RHSA-2020:4060 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP1 | kernel-azure +2 | 4.12.14-8.27.1 | SUSE-SU-2020:0511-1 |
| SLES 15 SP1 | kernel-docs +5 | 4.12.14-197.34.1 | SUSE-SU-2020:0560-1 |
| SLES 15 | kernel-docs +6 | 4.12.14-150.52.1 | SUSE-SU-2020:1663-1 |
| SLES 12 SP5 | kernel-azure +2 | 4.12.14-16.10.1 | SUSE-SU-2020:0558-1 |
| SLES 12 SP5 | kernel-docs | 4.12.14-122.17.2 | SUSE-SU-2020:0580-1 |
| SLES 12 SP5 | kernel-syms +3 | 4.12.14-122.17.1 | SUSE-SU-2020:0580-1 |
| SLES 12 SP4 | kernel-azure +2 | 4.12.14-6.37.1 | SUSE-SU-2020:0559-1 |
| SLES 12 SP4 | kernel-docs +4 | 4.12.14-95.48.1 | SUSE-SU-2020:0584-1 |
Show 11 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 15 | kernel-docs +5 | 4.12.14-150.52.1 | SUSE-SU-2020:1663-1 |
| SLES for SAP 12 SP5 | kernel-azure +2 | 4.12.14-16.10.1 | SUSE-SU-2020:0558-1 |
| SLES for SAP 12 SP5 | kernel-syms +2 | 4.12.14-122.17.1 | SUSE-SU-2020:0580-1 |
| SLES for SAP 12 SP4 | kernel-azure +2 | 4.12.14-6.37.1 | SUSE-SU-2020:0559-1 |
| SLES for SAP 12 SP4 | kernel-syms +2 | 4.12.14-95.48.1 | SUSE-SU-2020:0584-1 |
| SLE Real Time 12 SP5 | kernel-rt +3 | 4.12.14-6.3.1 | SUSE-SU-2020:0605-1 |
| SLE Real Time 12 SP4 | kernel-rt +3 | 4.12.14-8.12.1 | SUSE-SU-2020:0599-1 |
| SLE Live Patching 15 SP1 | kernel-default | 4.12.14-197.34.1 | SUSE-SU-2020:0560-1 |
| SLE Live Patching 15 SP1 | kernel-livepatch-SLE15-SP1_Update_9 | 1-3.5.1 | SUSE-SU-2020:0560-1 |
| SLE Live Patching 15 | kernel-default | 4.12.14-150.52.1 | SUSE-SU-2020:1663-1 |
| SLE Live Patching 15 | kernel-livepatch-SLE15_Update_18 | 1-1.5.1 | SUSE-SU-2020:1663-1 |
| SLE Live Patching 12 SP5 | kernel-default | 4.12.14-122.17.1 | SUSE-SU-2020:0580-1 |
| SLE Live Patching 12 SP5 | kgraft-patch-SLE12-SP5_Update_3 | 1-8.5.1 | SUSE-SU-2020:0580-1 |
| SLE Live Patching 12 SP4 | kernel-default | 4.12.14-95.48.1 | SUSE-SU-2020:0584-1 |
| SLE Live Patching 12 SP4 | kgraft-patch-SLE12-SP4_Update_12 | 1-6.3.1 | SUSE-SU-2020:0584-1 |
| SLE HPC 15 | kernel-docs +5 | 4.12.14-150.52.1 | SUSE-SU-2020:1663-1 |
| SUSE Real Time Module 15 SP1 | kernel-rt +3 | 4.12.14-14.17.1 | SUSE-SU-2020:0613-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Leap 15.1 | kernel-docs +8 | 4.12.14-lp151.28.40.1 | openSUSE-SU-2020:0336-1 |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 7 | dtrace-modules-3.8.13-118.41.1.el6uek | 0.4.5-3.el6 | ELSA-2019-4871 |
| Oracle Linux 7 | dtrace-modules-3.8.13-118.41.1.el7uek | 0.4.5-3.el7 | ELSA-2019-4871 |
| Oracle Linux 7 | kernel-uek +5 | 3.8.13-118.41.1.el7uek | ELSA-2019-4871, ELSA-2019-4850 |
| Oracle Linux 7 | perf +12 | 3.10.0-1160.el7 | ELSA-2020-4060 |
Advisories 18
- RHSA-2020:4062 Red Hat Security Advisory: kernel-rt security and bug fix update Red Hat Security Advisories (RHSA) · Oct 9, 2026
- RHSA-2020:4060 Red Hat Security Advisory: kernel security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Oct 9, 2026
- RHSA-2019:3517 Red Hat Security Advisory: kernel security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Aug 5, 2026
- RHSA-2019:3309 Red Hat Security Advisory: kernel-rt security and bug fix update Red Hat Security Advisories (RHSA) · Jun 28, 2026
- SUSE-SU-2020:0599-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2020:0584-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2020:0559-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2020:0580-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2020:0336-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2020:0560-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2020:0558-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2020:1663-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2020:0511-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2020:0605-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · May 2, 2025
- SUSE-SU-2020:0613-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · May 2, 2025
- ELSA-2020-4060 Important: kernel security, bug fix, and enhancement update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Oct 6, 2020
- ELSA-2019-4871 Important: Unbreakable Enterprise kernel security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Dec 9, 2019
- ELSA-2019-4850 Important: Unbreakable Enterprise kernel security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Nov 20, 2019