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CVE-2021-4145

nvd nist
Published: Jan 25, 2022Modified: Nov 21, 2024

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6.5
Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
Exploitability: 2.0 / Impact: 4.0
Source: NVD

Description

A NULL pointer dereference issue was found in the block mirror layer of QEMU in versions prior to 6.2.0. The `self` pointer is dereferenced in mirror_wait_on_conflicts() without ensuring that it's not NULL. A malicious unprivileged user within the guest could use this flaw to crash the QEMU process on the host when writing data reaches the threshold of mirroring node.

Affected (7)

Qemu
1 product
Qemu
Redhat
1 product
Enterprise Linux
Configuration A
6 vulnerable
Vulnerable SoftwareAffected Versions
Qemu
Qemu
Version 6.1.0
Qemu
Version 6.1.0 rc0
Qemu
Version 6.1.0 rc1
Qemu
Version 6.1.0 rc2
Qemu
Version 6.1.0 rc3
Qemu
Version 6.1.0 rc4
Configuration B
1 vulnerable
Vulnerable SoftwareAffected Versions
Enterprise Linux
Version 8.0

Related CWEs

CWE-476
NULL Pointer Dereference
The product dereferences a pointer that it expects to be valid but is NULL.

References (8)

Source: secalert@redhat.com
Issue TrackingPatchThird Party Advisory
Source: secalert@redhat.com
PatchThird Party Advisory
Source: secalert@redhat.com
Third Party Advisory
Source: secalert@redhat.com
Third Party Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
Issue TrackingPatchThird Party Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
PatchThird Party Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory

Timeline

No history available yet.