CVE-2022-4144

Severity: medium (CVSS 6.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2022-11-29 · updated 2026-06-17
Weakness: CWE-125

Description

An out-of-bounds read flaw was found in the QXL display device emulation in QEMU. The qxl_phys2virt() function does not check the size of the structure pointed to by the guest physical address, potentially reading past the end of the bar space into adjacent pages. A malicious guest user could use this flaw to crash the QEMU process on the host causing a denial of service condition.

Affected products

Fedoraproject Extra Packages For Enterprise Linux: 8.0
Fedoraproject Fedora: 37
QEMU: through 7.1.0
Red Hat Enterprise Linux: 8.0

References

https://bugzilla.redhat.com/show_bug.cgi?id=2148506
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GTVPHLLXJ65BUMFBUUZ35F3J632SLFRK/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/I7J5IRXJYLELW7D43A75LOWRUE5EU54O/
https://lists.nongnu.org/archive/html/qemu-devel/2022-11/msg04143.html
https://security.netapp.com/advisory/ntap-20230127-0012/
https://bugzilla.redhat.com/show_bug.cgi?id=2148506
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GTVPHLLXJ65BUMFBUUZ35F3J632SLFRK/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/I7J5IRXJYLELW7D43A75LOWRUE5EU54O/
https://lists.nongnu.org/archive/html/qemu-devel/2022-11/msg04143.html
https://security.netapp.com/advisory/ntap-20230127-0012/

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