CVE-2021-4150 — Use After Free in Kernel

CWE-416 — Use After Free6 documents6 sources
Severity
5.5MEDIUMNVD
EPSS
0.0%
top 87.02%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
3
Linux KernelDebian LinuxMsrc CM1 Kernel 5.10.116.1-1 ON CBL Mariner 1.0
Timeline
PublishedMar 23
Latest updateMar 24

Description

A use-after-free flaw was found in the add_partition in block/partitions/core.c in the Linux kernel. A local attacker with user privileges could cause a denial of service on the system. The issue results from the lack of code cleanup when device_add call fails when adding a partition to the disk.

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HExploitability: 1.8 | Impact: 3.6

Affected Packages4 packages

▶NVDlinux/linux_kernel< 5.15+1
▶CVEListV5linux/linux_kernelkernel 5.15 rc7
▶debiandebian/linux

🔴Vulnerability Details

2
GHSA
GHSA-wf58-5834-37vc: A use-after-free flaw was found in the add_partition in block/partitions/core↗2022-03-24
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OSV
CVE-2021-4150: A use-after-free flaw was found in the add_partition in block/partitions/core↗2022-03-23
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📋Vendor Advisories

3
Microsoft
A use-after-free flaw was found in the add_partition in block/partitions/core.c in the Linux kernel. A local attacker with user privileges could cause a denial of service on the system. The issue resu↗2022-03-08
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Red Hat
kernel: Block subsystem mishandles reference counts↗2021-09-07
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Debian
CVE-2021-4150: linux - A use-after-free flaw was found in the add_partition in block/partitions/core.c ...↗2021
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