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Vulnerability · Published Jun 19, 2024 · Assigned by Linux

CVE-2021-47600dm btree remove: fix use after free in rebalance_children()

High 7.8

In plain English

A high-severity security flaw in Linux from Linux. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 20% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)7.8High
Exploit odds (30 days)0.3%top 80.2% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official 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 packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12linux5.15.15-1DEBIAN-CVE-2021-47600
Debian:13linux5.15.15-1DEBIAN-CVE-2021-47600
Debian:14linux5.15.15-1DEBIAN-CVE-2021-47600
Ubuntu:22.04:LTSlinux-allwinner-5.19no fix listedUBUNTU-CVE-2021-47600
Ubuntu:22.04:LTSlinux-aws-5.19no fix listedUBUNTU-CVE-2021-47600
Ubuntu:22.04:LTSlinux-aws-6.2no fix listedUBUNTU-CVE-2021-47600
Ubuntu:22.04:LTSlinux-azure-5.19no fix listedUBUNTU-CVE-2021-47600
Ubuntu:22.04:LTSlinux-azure-6.2no fix listedUBUNTU-CVE-2021-47600
Ubuntu:22.04:LTSlinux-azure-fde-5.19no fix listedUBUNTU-CVE-2021-47600
Ubuntu:22.04:LTSlinux-azure-fde-6.2no fix listedUBUNTU-CVE-2021-47600
Ubuntu:22.04:LTSlinux-gcp-5.19no fix listedUBUNTU-CVE-2021-47600
Ubuntu:22.04:LTSlinux-gcp-6.2no fix listedUBUNTU-CVE-2021-47600
Ubuntu:22.04:LTSlinux-hwe-5.19no fix listedUBUNTU-CVE-2021-47600
Ubuntu:22.04:LTSlinux-hwe-6.2no fix listedUBUNTU-CVE-2021-47600
Ubuntu:22.04:LTSlinux-intel-iot-realtimeno fix listedUBUNTU-CVE-2021-47600
Ubuntu:22.04:LTSlinux-lowlatency-hwe-5.19no fix listedUBUNTU-CVE-2021-47600
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.2no fix listedUBUNTU-CVE-2021-47600
Ubuntu:22.04:LTSlinux-nvidia-6.2no fix listedUBUNTU-CVE-2021-47600
Ubuntu:22.04:LTSlinux-oem-5.17no fix listedUBUNTU-CVE-2021-47600
Ubuntu:22.04:LTSlinux-oem-6.0no fix listedUBUNTU-CVE-2021-47600
Ubuntu:22.04:LTSlinux-oem-6.1no fix listedUBUNTU-CVE-2021-47600
Ubuntu:24.04:LTSlinux-raspi-realtimeno fix listedUBUNTU-CVE-2021-47600
Ubuntu:22.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2021-47600
Ubuntu:22.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2021-47600
Ubuntu:22.04:LTSlinux-riscv-5.19no fix listedUBUNTU-CVE-2021-47600
Ubuntu:22.04:LTSlinux-starfive-5.19no fix listedUBUNTU-CVE-2021-47600
Ubuntu:22.04:LTSlinux-starfive-6.2no fix listedUBUNTU-CVE-2021-47600

Affected products (as reported)

VendorProductVersions
Linux Linux 3241b1d3e0aaafbfcd320f4d71ade629728cc4f4 – before a48f6a2bf33734ec5669ee03067dfb6c5b4818d63241b1d3e0aaafbfcd320f4d71ade629728cc4f4 – before 66ea642af6fd4eacb5d0271a922130fcf87004243241b1d3e0aaafbfcd320f4d71ade629728cc4f4 – before b03abd0aa09c05099f537cb05b8460c4298f08613241b1d3e0aaafbfcd320f4d71ade629728cc4f4 – before 293f957be5e39720778fb1851ced7f5fba6d51c33241b1d3e0aaafbfcd320f4d71ade629728cc4f4 – before 501ecd90efdc9b2edc6c28852ecd098a4adf8f003241b1d3e0aaafbfcd320f4d71ade629728cc4f4 – before 0e21e6cd5eebfc929ac5fa3b97ca2d4ace3cb6a33241b1d3e0aaafbfcd320f4d71ade629728cc4f4 – before 607beb420b3fe23b948a9bf447d993521a02fbbb3241b1d3e0aaafbfcd320f4d71ade629728cc4f4 – before 1b8d2789dad0005fd5e7d35dab26a8e1203fb6da
Linux Linux 3.2

References