Wind River Support Network


LIN1021-2272 : Security Advisory - qemu - CVE-2021-4145

Created: Dec 23, 2021    Updated: Jun 7, 2022
Resolved Date: Jun 7, 2022
Found In Version:
Fix Version:
Severity: Standard
Applicable for: Wind River Linux LTS 21
Component/s: Userspace


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.


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