Description
The KVM implementation in the Linux kernel through 4.20.5 has a Use-after-Free.
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 | 4.19.20-1 | — |
| Debian 13 | linux | 4.19.20-1 | — |
| Debian 12 | linux | 4.19.20-1 | — |
| Debian 8 | linux | 3.16.64-1 | DLA-1731-1 |
| Debian 8 | linux-4.9 | 4.9.168-1~deb8u1 | DLA-1771-1 |
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 +3 | No fix yet | — |
| Ubuntu 18.04 LTS | linux | 4.15.0-47.50 | USN-3931-1 |
| Ubuntu 18.04 LTS | linux-aws | 4.15.0-1035.37 | USN-3931-1 |
| Ubuntu 18.04 LTS | linux-azure | 4.18.0-1014.14~18.04.1 | USN-3930-2 |
| Ubuntu 18.04 LTS | linux-gcp | 4.15.0-1029.31 | USN-3931-1 |
| Ubuntu 18.04 LTS | linux-gcp-edge | 4.18.0-1008.9~18.04.1 | — |
| Ubuntu 18.04 LTS | linux-hwe | 4.18.0-17.18~18.04.1 | USN-3930-2 |
| Ubuntu 18.04 LTS | linux-kvm | 4.15.0-1031.31 | USN-3931-1 |
| Ubuntu 18.04 LTS | linux-oem | 4.15.0-1035.40 | USN-3931-1 |
| Ubuntu 18.04 LTS | linux-oracle | 4.15.0-1010.12 | USN-3931-1 |
| Ubuntu 18.04 LTS | linux-raspi2 | 4.15.0-1033.35 | USN-3931-1 |
| Ubuntu 18.04 LTS | linux-snapdragon | 4.15.0-1053.57 | — |
| Ubuntu 16.04 LTS | linux | 4.4.0-145.171 | USN-3932-1 |
| Ubuntu 16.04 LTS | linux-aws | 4.4.0-1079.89 | USN-3932-1 |
| Ubuntu 16.04 LTS | linux-aws-hwe | 4.15.0-1035.37~16.04.1 | USN-3931-2 |
| Ubuntu 16.04 LTS | linux-azure | 4.15.0-1041.45 | USN-3931-2 |
| Ubuntu 16.04 LTS | linux-gcp | 4.15.0-1029.31~16.04.1 | USN-3931-2 |
| Ubuntu 16.04 LTS | linux-hwe | 4.15.0-47.50~16.04.1 | USN-3931-2 |
| Ubuntu 16.04 LTS | linux-kvm | 4.4.0-1043.49 | USN-3932-1 |
| Ubuntu 16.04 LTS | linux-oracle | 4.15.0-1010.12~16.04.1 | USN-3931-2 |
| Ubuntu 16.04 LTS | linux-raspi2 | 4.4.0-1106.114 | USN-3932-1 |
| Ubuntu 16.04 LTS | linux-snapdragon | 4.4.0-1110.115 | USN-3932-1 |
Show 2 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 14.04 LTS | linux-aws | 4.4.0-1040.43 | USN-3932-2 |
| Ubuntu 14.04 LTS | linux-azure | 4.15.0-1041.45~14.04.1 | USN-3931-2 |
| Ubuntu 14.04 LTS | linux-lts-xenial | 4.4.0-144.170~14.04.1 | USN-3932-2 |
| Ubuntu Pro FIPS-updates 16.04 LTS | linux-fips | 4.4.0-1008.10 | — |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 7 | kernel-rt +10 | 3.10.0-957.12.1.rt56.927.el7 | RHSA-2019:0833 |
| RHEL 7 | perf +19 | 3.10.0-957.12.1.el7 | RHSA-2019:0818 |
Show 4 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 7.5 EUS | perf +18 | 3.10.0-862.44.2.el7 | RHSA-2019:3967 |
| RHEL 7.4 TUS | perf +12 | 3.10.0-693.61.1.el7 | RHSA-2019:4058 |
| RHEL 7.4 E4S | perf +14 | 3.10.0-693.61.1.el7 | RHSA-2019:4058 |
| RHEL 7.4 AUS | perf +12 | 3.10.0-693.61.1.el7 | RHSA-2019:4058 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 | kernel-azure +2 | 4.12.14-5.24.1 | SUSE-SU-2019:0785-1 |
| SLES 15 | kernel-default +3 | 4.12.14-150.14.2 | SUSE-SU-2019:0784-1 |
| SLES 15 | kernel-docs +2 | 4.12.14-150.14.1 | SUSE-SU-2019:0784-1 |
| SLES 12 SP4 | kernel-azure +2 | 4.12.14-6.9.1 | SUSE-SU-2019:0767-1 |
| SLES 12 SP4 | kernel-docs +4 | 4.12.14-95.13.1 | SUSE-SU-2019:0765-1 |
| SLES 12 SP3 | kernel-azure +2 | 4.4.176-4.25.1 | SUSE-SU-2019:0901-1 |
| SLES 12 SP3 | kernel-docs +4 | 4.4.175-94.79.1 | SUSE-SU-2019:0541-1 |
| SLES 12 SP2 | kernel-syms +2 | 4.4.121-92.104.1 | SUSE-SU-2019:0828-1 |
| SLES 12 SP2 | kgraft-patch-SLE12-SP2_Update_20 | 11-2.1 | SUSE-SU-2019:0683-1 |
| SLES 12 SP2 | kgraft-patch-SLE12-SP2_Update_21 +1 | 10-2.1 | SUSE-SU-2019:0683-1 |
| SLES 12 SP2 | kgraft-patch-SLE12-SP2_Update_23 | 7-2.1 | SUSE-SU-2019:0683-1 |
| SLES 12 SP2 | kgraft-patch-SLE12-SP2_Update_24 | 6-2.1 | SUSE-SU-2019:0709-1 |
| SLES 12 SP2 | kgraft-patch-SLE12-SP2_Update_25 | 5-2.1 | SUSE-SU-2019:0722-1 |
| SLES 12 SP2 | kgraft-patch-SLE12-SP2_Update_26 | 4-2.1 | SUSE-SU-2019:0709-1 |
| SLES 12 SP2 | kgraft-patch-SLE12-SP2_Update_28 | 1-3.3.1 | SUSE-SU-2019:0828-1 |
| SLES 12 SP1 | kernel-xen +3 | 3.12.74-60.64.110.1 | SUSE-SU-2019:1289-1 |
| SLES 12 SP1 | kgraft-patch-SLE12-SP1_Update_26 | 12-2.1 | SUSE-SU-2019:0672-1 |
| SLES 12 SP1 | kgraft-patch-SLE12-SP1_Update_27 | 10-2.1 | SUSE-SU-2019:0672-1 |
| SLES 12 SP1 | kgraft-patch-SLE12-SP1_Update_28 +1 | 9-2.1 | SUSE-SU-2019:0672-1 |
| SLES 12 SP1 | kgraft-patch-SLE12-SP1_Update_30 | 8-2.1 | SUSE-SU-2019:0672-1 |
| SLES 12 SP1 | kgraft-patch-SLE12-SP1_Update_31 +1 | 6-2.1 | SUSE-SU-2019:0672-1 |
| SLES 12 SP1 | kgraft-patch-SLE12-SP1_Update_33 | 1-2.3.1 | SUSE-SU-2019:1289-1 |
| SLES 12 SP1 | lttng-modules | 2.7.0-4.4.1 | SUSE-SU-2019:1289-1 |
Show 10 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 | kernel-ec2 | 3.12.74-60.64.110.1 | SUSE-SU-2019:1289-1 |
| SLES 12 | kgraft-patch-SLE12_Update_33 | 12-2.1 | SUSE-SU-2019:0645-1 |
| SLES 12 | kgraft-patch-SLE12_Update_34 | 10-2.1 | SUSE-SU-2019:0645-1 |
| SLES 12 | kgraft-patch-SLE12_Update_35 +1 | 9-2.1 | SUSE-SU-2019:0645-1 |
| SLES 12 | kgraft-patch-SLE12_Update_37 | 8-2.1 | SUSE-SU-2019:0645-1 |
| SLES 12 | kgraft-patch-SLE12_Update_38 | 6-2.1 | SUSE-SU-2019:0645-1 |
| SLES for SAP 12 SP4 | kernel-azure +2 | 4.12.14-6.9.1 | SUSE-SU-2019:0767-1 |
| SLES for SAP 12 SP4 | kernel-syms +2 | 4.12.14-95.13.1 | SUSE-SU-2019:0765-1 |
| SLES for SAP 12 SP3 | kernel-azure +2 | 4.4.176-4.25.1 | SUSE-SU-2019:0901-1 |
| SLES for SAP 12 SP3 | kernel-syms +2 | 4.4.175-94.79.1 | SUSE-SU-2019:0541-1 |
| SLES for SAP 12 SP2 | kernel-syms +2 | 4.4.121-92.104.1 | SUSE-SU-2019:0828-1 |
| SLES for SAP 12 SP2 | kgraft-patch-SLE12-SP2_Update_20 | 11-2.1 | SUSE-SU-2019:0683-1 |
| SLES for SAP 12 SP2 | kgraft-patch-SLE12-SP2_Update_21 +1 | 10-2.1 | SUSE-SU-2019:0683-1 |
| SLES for SAP 12 SP2 | kgraft-patch-SLE12-SP2_Update_23 | 7-2.1 | SUSE-SU-2019:0683-1 |
| SLES for SAP 12 SP2 | kgraft-patch-SLE12-SP2_Update_24 | 6-2.1 | SUSE-SU-2019:0709-1 |
| SLES for SAP 12 SP2 | kgraft-patch-SLE12-SP2_Update_25 | 5-2.1 | SUSE-SU-2019:0722-1 |
| SLES for SAP 12 SP2 | kgraft-patch-SLE12-SP2_Update_26 | 4-2.1 | SUSE-SU-2019:0709-1 |
| SLES for SAP 12 SP2 | kgraft-patch-SLE12-SP2_Update_28 | 1-3.3.1 | SUSE-SU-2019:0828-1 |
| SLES for SAP 12 SP1 | kernel-xen +3 | 3.12.74-60.64.110.1 | SUSE-SU-2019:1289-1 |
| SLES for SAP 12 SP1 | kgraft-patch-SLE12-SP1_Update_26 | 12-2.1 | SUSE-SU-2019:0672-1 |
| SLES for SAP 12 SP1 | kgraft-patch-SLE12-SP1_Update_27 | 10-2.1 | SUSE-SU-2019:0672-1 |
| SLES for SAP 12 SP1 | kgraft-patch-SLE12-SP1_Update_28 +1 | 9-2.1 | SUSE-SU-2019:0672-1 |
| SLES for SAP 12 SP1 | kgraft-patch-SLE12-SP1_Update_30 | 8-2.1 | SUSE-SU-2019:0672-1 |
| SLES for SAP 12 SP1 | kgraft-patch-SLE12-SP1_Update_31 +1 | 6-2.1 | SUSE-SU-2019:0672-1 |
| SLES for SAP 12 SP1 | kgraft-patch-SLE12-SP1_Update_33 | 1-2.3.1 | SUSE-SU-2019:1289-1 |
| SLES for SAP 12 SP1 | lttng-modules | 2.7.0-4.4.1 | SUSE-SU-2019:1289-1 |
| SLE Live Patching 15 | kernel-default | 4.12.14-150.14.2 | SUSE-SU-2019:0784-1 |
| SLE Live Patching 15 | kernel-livepatch-SLE15_Update_0 | 9-25.2 | SUSE-SU-2019:0740-1 |
| SLE Live Patching 15 | kernel-livepatch-SLE15_Update_1 +1 | 8-2.1 | SUSE-SU-2019:0745-1, SUSE-SU-2019:0740-1 |
| SLE Live Patching 15 | kernel-livepatch-SLE15_Update_3 | 6-2.1 | SUSE-SU-2019:0745-1 |
| SLE Live Patching 15 | kernel-livepatch-SLE15_Update_4 +1 | 5-2.1 | SUSE-SU-2019:0745-1 |
| SLE Live Patching 15 | kernel-livepatch-SLE15_Update_6 | 4-2.1 | SUSE-SU-2019:0745-1 |
| SLE Live Patching 15 | kernel-livepatch-SLE15_Update_7 | 3-2.1 | SUSE-SU-2019:0845-1 |
| SLE Live Patching 15 | kernel-livepatch-SLE15_Update_8 | 2-2.1 | SUSE-SU-2019:0845-1 |
| SLE Live Patching 15 | kernel-livepatch-SLE15_Update_9 | 1-1.9.3 | SUSE-SU-2019:0784-1 |
| SLE Live Patching 12 SP4 | kgraft-patch-SLE12-SP4_Update_0 | 4-2.10.2 | SUSE-SU-2019:0726-1 |
| SLE Live Patching 12 SP4 | kgraft-patch-SLE12-SP4_Update_1 | 3-2.1 | SUSE-SU-2019:0726-1 |
| SLE Live Patching 12 SP4 | kgraft-patch-SLE12-SP4_Update_2 | 2-2.1 | SUSE-SU-2019:0726-1 |
| SLE Live Patching 12 SP4 | kgraft-patch-SLE12-SP4_Update_3 | 1-6.7.1 | SUSE-SU-2019:0765-1 |
| SLE Live Patching 12 SP3 | kgraft-patch-SLE12-SP3_Update_10 +1 | 11-2.1 | SUSE-SU-2019:0754-1 |
| SLE Live Patching 12 SP3 | kgraft-patch-SLE12-SP3_Update_12 +1 | 9-2.1 | SUSE-SU-2019:0754-1 |
| SLE Live Patching 12 SP3 | kgraft-patch-SLE12-SP3_Update_14 +1 | 7-2.1 | SUSE-SU-2019:0754-1 |
| SLE Live Patching 12 SP3 | kgraft-patch-SLE12-SP3_Update_16 +3 | 5-2.1 | SUSE-SU-2019:0754-1 |
| SLE Live Patching 12 SP3 | kgraft-patch-SLE12-SP3_Update_20 | 4-2.1 | SUSE-SU-2019:0754-1 |
| SLE Live Patching 12 SP3 | kgraft-patch-SLE12-SP3_Update_21 +1 | 3-2.1 | SUSE-SU-2019:0754-1 |
| SLE Live Patching 12 SP3 | kgraft-patch-SLE12-SP3_Update_23 | 1-4.7.1 | SUSE-SU-2019:0541-1 |
| SUSE OpenStack Cloud 7 | kernel-syms +2 | 4.4.121-92.104.1 | SUSE-SU-2019:0828-1 |
| SUSE OpenStack Cloud 7 | kgraft-patch-SLE12-SP2_Update_28 | 1-3.3.1 | SUSE-SU-2019:0828-1 |
| SUSE Enterprise Storage 4 | kernel-syms +2 | 4.4.121-92.104.1 | SUSE-SU-2019:0828-1 |
| SUSE Enterprise Storage 4 | kgraft-patch-SLE12-SP2_Update_28 | 1-3.3.1 | SUSE-SU-2019:0828-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | kernel-source | 5.14.6-1.4 | openSUSE-SU-2024:13704-1, openSUSE-SU-2024:10728-1 |
| openSUSE Leap 15.0 | kernel-source | 4.12.14-lp150.12.48.1 | openSUSE-SU-2019:0203-1 |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2 | perf +8 | 4.14.101-91.76.amzn2 | ALAS2-2019-1165 |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 7 | kernel-uek +5 | 4.1.12-124.43.4.el7uek | ELSA-2020-5866, ELSA-2019-4612 |
| Oracle Linux 7 | kernel-uek-tools +3 | 4.14.35-1844.4.5.el7uek | ELSA-2019-4612 |
| Oracle Linux 7 | perf +12 | 3.10.0-957.12.1.el7 | ELSA-2019-4612, ELSA-2019-0818 |
Advisories 36
- USN-3931-1 linux, linux-aws, linux-gcp, linux-kvm, linux-oem, linux-oracle, linux-raspi2 vulnerabilities Ubuntu Security Notices (USN) · Sep 7, 2026
- USN-3931-2 linux-hwe, linux-aws-hwe, linux-azure, linux-gcp, linux-oracle vulnerabilities Ubuntu Security Notices (USN) · Sep 7, 2026
- USN-3930-2 linux-hwe, linux-azure vulnerabilities Ubuntu Security Notices (USN) · Sep 7, 2026
- USN-3932-2 linux-lts-xenial, linux-aws vulnerabilities Ubuntu Security Notices (USN) · Sep 7, 2026
- RHSA-2019:3967 Red Hat Security Advisory: kernel security and bug fix update Red Hat Security Advisories (RHSA) · Jul 8, 2026
- RHSA-2019:4058 Red Hat Security Advisory: kernel security and bug fix update Red Hat Security Advisories (RHSA) · Jun 29, 2026
- RHSA-2019:0833 Red Hat Security Advisory: kernel-rt security and bug fix update Red Hat Security Advisories (RHSA) · Jun 29, 2026
- RHSA-2019:0818 Red Hat Security Advisory: kernel security and bug fix update Red Hat Security Advisories (RHSA) · Jun 29, 2026
- USN-3932-1 linux, linux-aws, linux-kvm, linux-raspi2, linux-snapdragon vulnerabilities Ubuntu Security Notices (USN) · Jun 3, 2026
- DLA-1731-1 linux - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-1771-1 linux-4.9 - security update Debian Security (DSA / DLA) · Mar 9, 2026
- SUSE-SU-2019:0784-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2019:0745-1 Security update for the Linux Kernel (Live Patch 2 for SLE 15) SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2019:0722-1 Security update for the Linux Kernel (Live Patch 25 for SLE 12 SP2) SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2019:0765-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2019:0672-1 Security update for the Linux Kernel (Live Patch 32 for SLE 12 SP1) SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:13704-1 kernel-devel-longterm-6.6.17-1.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2019:0901-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2019:0754-1 Security update for the Linux Kernel (Live Patch 19 for SLE 12 SP3) SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2019:1289-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2019:0709-1 Security update for the Linux Kernel (Live Patch 24 for SLE 12 SP2) SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2019:0828-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2019:0645-1 Security update for the Linux Kernel (Live Patch 34 for SLE 12) SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2019:0845-1 Security update for the Linux Kernel (Live Patch 8 for SLE 15) SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2019:0541-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2019:0740-1 Security update for the Linux Kernel (Live Patch 1 for SLE 15) SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2019:0683-1 Security update for the Linux Kernel (Live Patch 22 for SLE 12 SP2) SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2019:0785-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:10728-1 kernel-devel-5.14.6-1.4 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2019:0726-1 Security update for the Linux Kernel (Live Patch 2 for SLE 12 SP4) SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2019:0203-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · May 2, 2025
- SUSE-SU-2019:0767-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · May 2, 2025
- ELSA-2020-5866 Important: Unbreakable Enterprise kernel security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Oct 6, 2020
- ELSA-2019-0818 Important: kernel security and bug fix update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Apr 23, 2019
- ELSA-2019-4612 Important: Unbreakable Enterprise kernel security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Apr 12, 2019
- ALAS2-2019-1165 Important: kernel security update (Amazon Linux 2) Amazon Linux Security Center (ALAS) · Mar 8, 2019
References
- http://packetstormsecurity.com/files/151713/KVM-VMX-Preemption-Timer-Use-After-Free.html
- FEDORA-2019-164946aa7f vendor-advisory
- FEDORA-2019-3da64f3e61 vendor-advisory
- https://github.com/torvalds/linux/commits/master/arch/x86/kvm
- SUSE-SA-2019:0203-1 vendor-advisory
- http://www.openwall.com/lists/oss-security/2019/02/18/2
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=ecec76885bcfe3294685dc363fd1273df0d5d65f
- https://bugs.chromium.org/p/project-zero/issues/detail?id=1760
- [debian-lts-announce] 20190327 [SECURITY] [DLA 1731-1] linux security update mailing-list
- [debian-lts-announce] 20190401 [SECURITY] [DLA 1731-2] linux regression update mailing-list
- USN-3932-1 vendor-advisory
- USN-3932-2 vendor-advisory
- USN-3930-1 vendor-advisory
- USN-3931-1 vendor-advisory
- USN-3931-2 vendor-advisory
- USN-3930-2 vendor-advisory
- https://security.netapp.com/advisory/ntap-20190404-0002/
- RHSA-2019:0833 vendor-advisory
- RHSA-2019:0818 vendor-advisory
- [debian-lts-announce] 20190503 [SECURITY] [DLA 1771-1] linux-4.9 security update mailing-list
- RHBA-2019:0959 vendor-advisory
- https://support.f5.com/csp/article/K08413011
- RHSA-2019:3967 vendor-advisory
- RHSA-2019:4058 vendor-advisory