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High · 7.8 CVE-2021-47600 EUVD-2021-34602GHSA-gr6r-fxgm-72rq

dm btree remove: fix use after free in rebalance_children()

Published Jun 19, 2024 · Updated Aug 5, 2026 · Assigned by Linux

Vendor: Linux Product: Linux Package: linux Package: linux Package: linux-allwinner-5.19 Package: linux-aws Package: linux-aws-5.0 Package: linux-aws-5.11 Package: linux-aws-5.13 Package: linux-aws-5.19 Package: linux-aws-5.3 Package: linux-aws-5.4 Package: linux-aws-5.8 Package: linux-aws-6.2 Package: linux-aws-fips Package: linux-aws-hwe Package: linux-azure Package: linux-azure-4.15 Package: linux-azure-5.11 Package: linux-azure-5.13 Package: linux-azure-5.19 Package: linux-azure-5.3 Package: linux-azure-5.4 Package: linux-azure-5.8 Package: linux-azure-6.2 Package: linux-azure-edge Package: linux-azure-fde Package: linux-azure-fde-5.19 Package: linux-azure-fde-6.2 Package: linux-azure-fips Package: linux-bluefield Package: linux-fips Package: linux-gcp Package: linux-gcp-4.15 Package: linux-gcp-5.11 Package: linux-gcp-5.13 Package: linux-gcp-5.19 Package: linux-gcp-5.3 Package: linux-gcp-5.4 Package: linux-gcp-5.8 Package: linux-gcp-6.2 Package: linux-gcp-fips Package: linux-gke Package: linux-gke-4.15 Package: linux-gke-5.15 Package: linux-gke-5.4 Package: linux-gkeop Package: linux-gkeop-5.4 Package: linux-hwe Package: linux-hwe-5.11 Package: linux-hwe-5.13 Package: linux-hwe-5.19 Package: linux-hwe-5.4 Package: linux-hwe-5.8 Package: linux-hwe-6.2 Package: linux-hwe-edge Package: linux-ibm Package: linux-ibm-5.4 Package: linux-intel-5.13 Package: linux-intel-iot-realtime Package: linux-kvm Package: linux-lowlatency-hwe-5.19 Package: linux-lowlatency-hwe-6.2 Package: linux-lts-xenial Package: linux-nvidia-6.2 Package: linux-oem Package: linux-oem-5.10 Package: linux-oem-5.13 Package: linux-oem-5.14 Package: linux-oem-5.17 Package: linux-oem-5.6 Package: linux-oem-6.0 Package: linux-oem-6.1 Package: linux-oracle Package: linux-oracle-5.0 Package: linux-oracle-5.11 Package: linux-oracle-5.13 Package: linux-oracle-5.3 Package: linux-oracle-5.4 Package: linux-oracle-5.8 Package: linux-raspi Package: linux-raspi-5.4 Package: linux-raspi-realtime Package: linux-raspi2 Package: linux-realtime Package: linux-riscv Package: linux-riscv-5.11 Package: linux-riscv-5.19 Package: linux-riscv-5.8 Package: linux-starfive-5.19 Package: linux-starfive-6.2 Package: linux-vmware Platform: Linux Ecosystem: Debian Ecosystem: Ubuntu

Description

In the Linux kernel, the following vulnerability has been resolved:

dm btree remove: fix use after free in rebalance_children()

Move dm_tm_unlock() after dm_tm_dec().

Affected products

VendorProductAffectedFixed
Linux Linux 3.2 4.4.296

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.

ReleasePackageFixed inAdvisory
Debian 14 linux 5.15.15-1 —
Debian 13 linux 5.15.15-1 —
Debian 12 linux 5.15.15-1 —
ReleasePackageFixed inAdvisory
Ubuntu 24.04 LTS linux-raspi-realtime No fix yet —
Ubuntu 22.04 LTS linux-riscv +22 No fix yet —
Ubuntu 20.04 LTS linux 5.4.0-105.119 —
Ubuntu 20.04 LTS linux-aws 5.4.0-1069.73 —
Ubuntu 20.04 LTS linux-azure 5.4.0-1073.76 —
Ubuntu 20.04 LTS linux-bluefield 5.4.0-1032.35 —
Ubuntu 20.04 LTS linux-gcp 5.4.0-1068.72 —
Ubuntu 20.04 LTS linux-gke +26 No fix yet —
Ubuntu 20.04 LTS linux-gkeop 5.4.0-1037.38 —
Ubuntu 20.04 LTS linux-ibm 5.4.0-1018.20 —
Ubuntu 20.04 LTS linux-kvm 5.4.0-1059.62 —
Ubuntu 20.04 LTS linux-oracle 5.4.0-1067.72 —
Ubuntu 20.04 LTS linux-raspi 5.4.0-1056.63 —
Ubuntu 18.04 LTS linux 4.15.0-169.177 —
Ubuntu 18.04 LTS linux-aws 4.15.0-1121.129 —
Ubuntu 18.04 LTS linux-aws-5.4 5.4.0-1069.73~18.04.1 —
Ubuntu 18.04 LTS linux-azure-4.15 4.15.0-1131.144 —
Ubuntu 18.04 LTS linux-azure-5.4 5.4.0-1073.76~18.04.1 —
Ubuntu 18.04 LTS linux-gcp +14 No fix yet —
Ubuntu 18.04 LTS linux-gcp-4.15 4.15.0-1116.130 —
Ubuntu 18.04 LTS linux-gcp-5.4 5.4.0-1068.72~18.04.1 —
Ubuntu 18.04 LTS linux-hwe-5.4 5.4.0-105.119~18.04.1 —
Ubuntu 18.04 LTS linux-ibm-5.4 5.4.0-1018.20~18.04.1 —
Ubuntu 18.04 LTS linux-kvm 4.15.0-1107.109 —
Ubuntu 18.04 LTS linux-oracle 4.15.0-1087.95 —
Ubuntu 18.04 LTS linux-oracle-5.4 5.4.0-1067.72~18.04.1 —
Ubuntu 18.04 LTS linux-raspi-5.4 5.4.0-1056.63~18.04.1 —
Ubuntu 16.04 LTS linux-hwe-edge No fix yet —
Show 8 more (older releases, extended support, other products)
ReleasePackageFixed inAdvisory
Ubuntu Pro FIPS 20.04 LTS linux-fips +3 No fix yet —
Ubuntu Pro FIPS 18.04 LTS linux-fips +3 No fix yet —
Ubuntu Pro FIPS 16.04 LTS linux-fips No fix yet —
Ubuntu Pro FIPS-updates 20.04 LTS linux-aws-fips 5.4.0-1069.73+fips2 —
Ubuntu Pro FIPS-updates 20.04 LTS linux-azure-fips 5.4.0-1073.76+fips1 —
Ubuntu Pro FIPS-updates 20.04 LTS linux-fips 5.4.0-1046.52 —
Ubuntu Pro FIPS-updates 20.04 LTS linux-gcp-fips 5.4.0-1067.71~20.04.1 —
Ubuntu Pro FIPS-updates 18.04 LTS linux-aws-fips 4.15.0-2061.63 —
Ubuntu Pro FIPS-updates 18.04 LTS linux-azure-fips 4.15.0-2043.47 —
Ubuntu Pro FIPS-updates 18.04 LTS linux-fips 4.15.0-1078.87 —
Ubuntu Pro FIPS-updates 18.04 LTS linux-gcp-fips 4.15.0-2026.28 —
Ubuntu Pro FIPS-updates 16.04 LTS linux-fips No fix yet —
Ubuntu Pro 16.04 LTS linux +2 No fix yet —
Ubuntu Pro 16.04 LTS linux-aws-hwe 4.15.0-1120.128~16.04.1 —
Ubuntu Pro 16.04 LTS linux-azure 4.15.0-1131.144~16.04.1 —
Ubuntu Pro 16.04 LTS linux-gcp 4.15.0-1116.130~16.04.1 —
Ubuntu Pro 16.04 LTS linux-hwe 4.15.0-169.177~16.04.1 —
Ubuntu Pro 16.04 LTS linux-oracle 4.15.0-1087.95~16.04.1 —
Ubuntu Pro 14.04 LTS linux +2 No fix yet —
Ubuntu Pro 14.04 LTS linux-azure 4.15.0-1131.144~14.04.1 —
ReleasePackageFixed inAdvisory
RHEL 8.4 EUS Long Life perf +17 4.18.0-305.206.1.el8_4 RHSA-2026:65710
RHEL 8.4 AUS perf +17 4.18.0-305.206.1.el8_4 RHSA-2026:65710
ReleasePackageFixed inAdvisory
SLES 15 SP5 kernel-64kb +5 5.14.21-150500.55.73.1 SUSE-SU-2024:2939-1
SLES 15 SP5 kernel-azure +2 5.14.21-150500.33.60.1 SUSE-SU-2024:2372-1
SLES 15 SP5 kernel-default-base 5.14.21-150500.55.73.1.150500.6.33.8 SUSE-SU-2024:2939-1
SLES 15 SP5 kernel-docs 5.14.21-150500.55.73.2 SUSE-SU-2024:2939-1
SLES 15 SP4 kernel-64kb +6 5.14.21-150400.24.128.1 SUSE-SU-2024:2929-1
SLES 15 SP4 kernel-default-base 5.14.21-150400.24.128.1.150400.24.62.1 SUSE-SU-2024:2929-1
SLES 15 SP3 kernel-64kb +7 5.3.18-150300.59.167.1 SUSE-SU-2024:2948-1, SUSE-SU-2024:2362-1
SLES 15 SP3 kernel-default-base 5.3.18-150300.59.167.1.150300.18.98.1 SUSE-SU-2024:2948-1, SUSE-SU-2024:2362-1
SLES 15 SP2 kernel-default-base 5.3.18-150200.24.200.1.150200.9.103.1 SUSE-SU-2024:2923-1
SLES 15 SP2 kernel-docs +5 5.3.18-150200.24.200.1 SUSE-SU-2024:2923-1
SLES 12 SP5 kernel-azure +2 4.12.14-16.191.1 SUSE-SU-2024:2360-1
SLES 12 SP5 kernel-docs +4 4.12.14-122.222.1 SUSE-SU-2024:2561-1
Show 23 more (older releases, extended support, other products)
ReleasePackageFixed inAdvisory
SLES 11 SP4 kernel-ec2 +5 3.0.101-108.159.1 SUSE-SU-2024:2895-1
SLES for SAP 15 SP4 kernel-default-base 5.14.21-150400.24.128.1.150400.24.62.1 SUSE-SU-2024:2929-1
SLES for SAP 15 SP4 kernel-docs +4 5.14.21-150400.24.128.1 SUSE-SU-2024:2929-1
SLES for SAP 15 SP3 kernel-default-base 5.3.18-150300.59.167.1.150300.18.98.1 SUSE-SU-2024:2948-1, SUSE-SU-2024:2362-1
SLES for SAP 15 SP3 kernel-docs +5 5.3.18-150300.59.167.1 SUSE-SU-2024:2948-1, SUSE-SU-2024:2362-1
SLES for SAP 15 SP2 kernel-default-base 5.3.18-150200.24.200.1.150200.9.103.1 SUSE-SU-2024:2923-1
SLES for SAP 15 SP2 kernel-docs +5 5.3.18-150200.24.200.1 SUSE-SU-2024:2923-1
SLES for SAP 12 SP5 kernel-azure +2 4.12.14-16.191.1 SUSE-SU-2024:2360-1
SLES for SAP 12 SP5 kernel-syms +2 4.12.14-122.222.1 SUSE-SU-2024:2561-1
SLE Real Time 12 SP5 kernel-rt +3 4.12.14-10.191.1 SUSE-SU-2024:2381-1
SLE Micro 5.5 kernel-default 5.14.21-150500.55.73.1 SUSE-SU-2024:2939-1
SLE Micro 5.5 kernel-default-base 5.14.21-150500.55.73.1.150500.6.33.8 SUSE-SU-2024:2939-1
SLE Micro 5.5 kernel-rt +1 5.14.21-150500.13.61.1 SUSE-SU-2024:2394-1
SLE Micro 5.4 kernel-default 5.14.21-150400.24.128.1 SUSE-SU-2024:2929-1
SLE Micro 5.4 kernel-default-base 5.14.21-150400.24.128.1.150400.24.62.1 SUSE-SU-2024:2929-1
SLE Micro 5.4 kernel-rt +1 5.14.21-150400.15.88.1 SUSE-SU-2024:2902-1
SLE Micro 5.3 kernel-default 5.14.21-150400.24.128.1 SUSE-SU-2024:2929-1
SLE Micro 5.3 kernel-default-base 5.14.21-150400.24.128.1.150400.24.62.1 SUSE-SU-2024:2929-1
SLE Micro 5.3 kernel-rt +1 5.14.21-150400.15.88.1 SUSE-SU-2024:2902-1
SLE Micro 5.2 kernel-default 5.3.18-150300.59.167.1 SUSE-SU-2024:2948-1, SUSE-SU-2024:2362-1
SLE Micro 5.2 kernel-default-base 5.3.18-150300.59.167.1.150300.18.98.1 SUSE-SU-2024:2948-1, SUSE-SU-2024:2362-1
SLE Micro 5.2 kernel-rt +1 5.3.18-150300.175.1 SUSE-SU-2024:2384-1
SLE Micro 5.1 kernel-default 5.3.18-150300.59.167.1 SUSE-SU-2024:2948-1, SUSE-SU-2024:2362-1
SLE Micro 5.1 kernel-default-base 5.3.18-150300.59.167.1.150300.18.98.1 SUSE-SU-2024:2948-1, SUSE-SU-2024:2362-1
SLE Micro 5.1 kernel-rt +1 5.3.18-150300.175.1 SUSE-SU-2024:2384-1
SLE Live Patching 15 SP5 kernel-default 5.14.21-150500.55.73.1 SUSE-SU-2024:2939-1
SLE Live Patching 15 SP5 kernel-livepatch-SLE15-SP5_Update_17 +1 1-150500.11.3.1 SUSE-SU-2024:2939-1, SUSE-SU-2024:2394-1
SLE Live Patching 15 SP4 kernel-default 5.14.21-150400.24.128.1 SUSE-SU-2024:2929-1
SLE Live Patching 15 SP4 kernel-livepatch-SLE15-SP4_Update_29 1-150400.9.3.1 SUSE-SU-2024:2929-1
SLE Live Patching 15 SP3 kernel-default 5.3.18-150300.59.167.1 SUSE-SU-2024:2948-1, SUSE-SU-2024:2362-1
SLE Live Patching 15 SP3 kernel-livepatch-SLE15-SP3_Update_46 +1 1-150300.7.3.1 SUSE-SU-2024:2948-1, SUSE-SU-2024:2362-1
SLE Live Patching 15 SP2 kernel-default 5.3.18-150200.24.200.1 SUSE-SU-2024:2923-1
SLE Live Patching 15 SP2 kernel-livepatch-SLE15-SP2_Update_41 +1 15-150200.2.1 SUSE-SU-2024:3794-1, SUSE-SU-2024:3782-1
SLE Live Patching 15 SP2 kernel-livepatch-SLE15-SP2_Update_44 14-150200.2.1 SUSE-SU-2024:3767-1
SLE Live Patching 15 SP2 kernel-livepatch-SLE15-SP2_Update_45 11-150200.2.1 SUSE-SU-2024:3848-1
SLE Live Patching 15 SP2 kernel-livepatch-SLE15-SP2_Update_46 9-150200.5.6.1 SUSE-SU-2024:4242-1, SUSE-SU-2024:3803-1
SLE Live Patching 15 SP2 kernel-livepatch-SLE15-SP2_Update_47 8-150200.5.6.1 SUSE-SU-2024:4263-1, SUSE-SU-2024:3796-1
SLE Live Patching 15 SP2 kernel-livepatch-SLE15-SP2_Update_48 7-150200.5.6.1 SUSE-SU-2024:4250-1, SUSE-SU-2024:3849-1
SLE Live Patching 15 SP2 kernel-livepatch-SLE15-SP2_Update_49 4-150200.5.6.1 SUSE-SU-2024:4231-1, SUSE-SU-2024:3800-1
SLE Live Patching 15 SP2 kernel-livepatch-SLE15-SP2_Update_50 3-150200.5.6.1 SUSE-SU-2024:4248-1, SUSE-SU-2024:3768-1
SLE Live Patching 15 SP2 kernel-livepatch-SLE15-SP2_Update_51 1-150200.5.3.1 SUSE-SU-2024:2923-1
SLE Live Patching 12 SP5 kernel-default 4.12.14-122.222.1 SUSE-SU-2024:2561-1
SLE Live Patching 12 SP5 kgraft-patch-SLE12-SP5_Update_58 1-8.3.1 SUSE-SU-2024:2561-1
SLE HPC 15 SP4 kernel-64kb +5 5.14.21-150400.24.128.1 SUSE-SU-2024:2929-1
SLE HPC 15 SP4 kernel-default-base 5.14.21-150400.24.128.1.150400.24.62.1 SUSE-SU-2024:2929-1
SLE HPC 15 SP3 kernel-64kb +6 5.3.18-150300.59.167.1 SUSE-SU-2024:2948-1, SUSE-SU-2024:2362-1
SLE HPC 15 SP3 kernel-default-base 5.3.18-150300.59.167.1.150300.18.98.1 SUSE-SU-2024:2948-1, SUSE-SU-2024:2362-1
SLE HPC 15 SP2 kernel-default-base 5.3.18-150200.24.200.1.150200.9.103.1 SUSE-SU-2024:2923-1
SLE HPC 15 SP2 kernel-docs +5 5.3.18-150200.24.200.1 SUSE-SU-2024:2923-1
SUSE Real Time Module 15 SP5 kernel-rt +3 5.14.21-150500.13.61.1 SUSE-SU-2024:2394-1
SUSE Manager Server 4.3 kernel-default-base 5.14.21-150400.24.128.1.150400.24.62.1 SUSE-SU-2024:2929-1
SUSE Manager Server 4.3 kernel-syms +3 5.14.21-150400.24.128.1 SUSE-SU-2024:2929-1
SUSE Manager Proxy 4.3 kernel-default-base 5.14.21-150400.24.128.1.150400.24.62.1 SUSE-SU-2024:2929-1
SUSE Manager Proxy 4.3 kernel-syms +2 5.14.21-150400.24.128.1 SUSE-SU-2024:2929-1
SUSE Enterprise Storage 7.1 kernel-64kb +6 5.3.18-150300.59.167.1 SUSE-SU-2024:2948-1, SUSE-SU-2024:2362-1
SUSE Enterprise Storage 7.1 kernel-default-base 5.3.18-150300.59.167.1.150300.18.98.1 SUSE-SU-2024:2948-1, SUSE-SU-2024:2362-1
ReleasePackageFixed inAdvisory
openSUSE Leap 15.5 dtb-aarch64 +9 5.14.21-150500.55.73.1 SUSE-SU-2024:2939-1
openSUSE Leap 15.5 kernel-azure +2 5.14.21-150500.33.60.1 SUSE-SU-2024:2372-1
openSUSE Leap 15.5 kernel-default-base 5.14.21-150500.55.73.1.150500.6.33.8 SUSE-SU-2024:2939-1
openSUSE Leap 15.5 kernel-docs 5.14.21-150500.55.73.2 SUSE-SU-2024:2939-1
openSUSE Leap 15.5 kernel-rt +3 5.14.21-150500.13.61.1 SUSE-SU-2024:2394-1
Show 1 more (older releases, extended support, other products)
ReleasePackageFixed inAdvisory
openSUSE Leap Micro 5.5 kernel-default 5.14.21-150500.55.73.1 SUSE-SU-2024:2939-1
openSUSE Leap Micro 5.5 kernel-default-base 5.14.21-150500.55.73.1.150500.6.33.8 SUSE-SU-2024:2939-1

Amazon Linux

ReleasePackageFixed inAdvisory
Amazon Linux 2 kernel-livepatch-4.14.262-200.489 1.0-0.amzn2 ALAS2-2022-1749
Amazon Linux 2 perf +8 4.14.262-200.489.amzn2 ALAS2-2022-1749

Advisories 30

References