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ubuntucveUbuntu.comUB:CVE-2021-4145
HistoryJan 25, 2022 - 12:00 a.m.

CVE-2021-4145

2022-01-2500:00:00
ubuntu.com
ubuntu.com
10

0.0004 Low

EPSS

Percentile

5.2%

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.

Notes

Author Note
mdeslaur introduced in 6.1.0