CVE-2021-4158
published 2022-08-24CVE-2021-4158: A NULL pointer dereference issue was found in the ACPI code of QEMU. A malicious, privileged user within the guest could use this flaw to crash the QEMU…
PriorityP419medium6CVSS 3.1
AVLACLPRHUINSCCNINAH
EPSS
0.38%
29.8th percentile
A NULL pointer dereference issue was found in the ACPI code of QEMU. A malicious, privileged user within the guest could use this flaw to crash the QEMU process on the host, resulting in a denial of service condition.
Affected
14 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | qemu | < qemu 1:6.2+dfsg-2 (bookworm) | qemu 1:6.2+dfsg-2 (bookworm) |
| msrc | azl3_qemu_6.2.0-18_on_azure_linux_3.0 | — | — |
| msrc | azure_linux_3.0_arm | — | — |
| msrc | azure_linux_3.0_x64 | — | — |
| msrc | cbl_mariner_2.0_arm | — | — |
| msrc | cbl_mariner_2.0_x64 | — | — |
| qemu | qemu | — | — |
| qemu | qemu | >= 0 < 1:6.2+dfsg-2 | 1:6.2+dfsg-2 |
| qemu | qemu | >= 0 < 1:6.2+dfsg-2 | 1:6.2+dfsg-2 |
| qemu | qemu | >= 0 < 1:6.2+dfsg-2 | 1:6.2+dfsg-2 |
| qemu | qemu | >= 0 < 1:2.11+dfsg-1ubuntu7.39 | 1:2.11+dfsg-1ubuntu7.39 |
| qemu | qemu | >= 0 < 1:4.2-3ubuntu6.21 | 1:4.2-3ubuntu6.21 |
| qemu | qemu | >= 6.0.0 < 7.0.0 | 7.0.0 |
| redhat | enterprise_linux | — | — |
CVSS provenance
nvdv3.16.0MEDIUMCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:H
osv6.5MEDIUM
vendor_ubuntu6.5MEDIUM
vendor_debian6.0MEDIUM
vendor_msrc6.0MEDIUM
vendor_redhat6.0MEDIUM
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Microsoft
A NULL pointer dereference issue was found in the ACPI code of QEMU. A malicious privileged user within the guest could use this flaw to crash the QEMU process on the host resulting in a denial of ser
vendor_msrc·2022-08-09·CVSS 6.0
CVE-2021-4158 [MEDIUM] CWE-476 A NULL pointer dereference issue was found in the ACPI code of QEMU. A malicious privileged user within the guest could use this flaw to crash the QEMU process on the host resulting in a denial of ser
A NULL pointer dereference issue was found in the ACPI code of QEMU. A malicious privileged user within the guest could use this flaw to crash the QEMU process on the host resulting in a denial of service condition.
FAQ: Is Azure Linux the only Microsoft product that includes this open-source library and is therefore potentially affected by this vulnerability?
One of the main benefits to our customers who choose to use the Azure Linux distro is the commitment to keep it up to date with the most recent and most secure versions of the open source libraries with which the distro is composed. Microsoft is committed to transparency in this work which is why we began publishing CSAF/VEX in October 2025. See this blog post for more information. If impact to additional products is identified, we
Ubuntu
QEMU vulnerabilities
vendor_ubuntu·2022-02-28·CVSS 6.5
CVE-2021-3544 [MEDIUM] QEMU vulnerabilities
Title: QEMU vulnerabilities
Summary: Several security issues were fixed in QEMU.
Gaoning Pan discovered that QEMU incorrectly handled the floppy disk
emulator. An attacker inside the guest could use this issue to cause QEMU
to crash, resulting in a denial of service. (CVE-2021-20196)
Gaoning Pan discovered that the QEMU vmxnet3 NIC emulator incorrectly
handled certain values. An attacker inside the guest could use this issue
to cause QEMU to crash, resulting in a denial of service. (CVE-2021-20203)
It was discovered that the QEMU vhost-user GPU device contained several
security issues. An attacker inside the guest could use these issues to
cause QEMU to crash, resulting in a denial of service, leak sensitive
information, or possibly execute arbitrary code. This issue only affected
Ubun
Red Hat
QEMU: NULL pointer dereference in pci_write() in hw/acpi/pcihp.c
vendor_redhat·2021-12-12·CVSS 6.0
CVE-2021-4158 [MEDIUM] CWE-476 QEMU: NULL pointer dereference in pci_write() in hw/acpi/pcihp.c
QEMU: NULL pointer dereference in pci_write() in hw/acpi/pcihp.c
A NULL pointer dereference issue was found in the ACPI code of QEMU. A malicious, privileged user within the guest could use this flaw to crash the QEMU process on the host, resulting in a denial of service condition.
A NULL pointer dereference issue was found in the ACPI code of QEMU. A malicious, privileged user within the guest could use this flaw to crash the QEMU process on the host, resulting in a denial of service condition.
Statement: Releases of Red Hat OpenStack Platform 15 and newer, Red Hat Virtualization 4.4 and newer consume fixes directly from the Red Hat Enterprise Linux 8 Advanced Virtualization repository.
Mitigation: Mitigation for this issue is either not available or the currently available options do
Debian
CVE-2021-4158: qemu - A NULL pointer dereference issue was found in the ACPI code of QEMU. A malicious...
vendor_debian·2021·CVSS 6.0
CVE-2021-4158 [MEDIUM] CVE-2021-4158: qemu - A NULL pointer dereference issue was found in the ACPI code of QEMU. A malicious...
A NULL pointer dereference issue was found in the ACPI code of QEMU. A malicious, privileged user within the guest could use this flaw to crash the QEMU process on the host, resulting in a denial of service condition.
Scope: local
bookworm: resolved (fixed in 1:6.2+dfsg-2)
bullseye: resolved
forky: resolved (fixed in 1:6.2+dfsg-2)
sid: resolved (fixed in 1:6.2+dfsg-2)
trixie: resolved (fixed in 1:6.2+dfsg-2)
GHSA
GHSA-9p4w-6fpq-fpm6: A NULL pointer dereference issue was found in the ACPI code of QEMU
ghsa_unreviewed·2022-08-25
CVE-2021-4158 [MEDIUM] CWE-476 GHSA-9p4w-6fpq-fpm6: A NULL pointer dereference issue was found in the ACPI code of QEMU
A NULL pointer dereference issue was found in the ACPI code of QEMU. A malicious, privileged user within the guest could use this flaw to crash the QEMU process on the host, resulting in a denial of service condition.
OSV
CVE-2021-4158: A NULL pointer dereference issue was found in the ACPI code of QEMU
osv·2022-08-24·CVSS 6.0
CVE-2021-4158 [MEDIUM] CVE-2021-4158: A NULL pointer dereference issue was found in the ACPI code of QEMU
A NULL pointer dereference issue was found in the ACPI code of QEMU. A malicious, privileged user within the guest could use this flaw to crash the QEMU process on the host, resulting in a denial of service condition.
OSV
qemu vulnerabilities
osv·2022-02-28·CVSS 6.5
CVE-2021-20196 [MEDIUM] qemu vulnerabilities
qemu vulnerabilities
Gaoning Pan discovered that QEMU incorrectly handled the floppy disk
emulator. An attacker inside the guest could use this issue to cause QEMU
to crash, resulting in a denial of service. (CVE-2021-20196)
Gaoning Pan discovered that the QEMU vmxnet3 NIC emulator incorrectly
handled certain values. An attacker inside the guest could use this issue
to cause QEMU to crash, resulting in a denial of service. (CVE-2021-20203)
It was discovered that the QEMU vhost-user GPU device contained several
security issues. An attacker inside the guest could use these issues to
cause QEMU to crash, resulting in a denial of service, leak sensitive
information, or possibly execute arbitrary code. This issue only affected
Ubuntu 21.10. (CVE-2021-3544, CVE-2021-3545, CVE-2021-3546)
It w
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
https://access.redhat.com/security/cve/CVE-2021-4158https://bugzilla.redhat.com/show_bug.cgi?id=2035002https://gitlab.com/qemu-project/qemu/-/commit/9bd6565ccee68f72d5012e24646e12a1c662827ehttps://gitlab.com/qemu-project/qemu/-/issues/770https://www.mail-archive.com/qemu-devel%40nongnu.org/msg857944.htmlhttps://access.redhat.com/security/cve/CVE-2021-4158https://bugzilla.redhat.com/show_bug.cgi?id=2035002https://gitlab.com/qemu-project/qemu/-/commit/9bd6565ccee68f72d5012e24646e12a1c662827ehttps://gitlab.com/qemu-project/qemu/-/issues/770https://www.mail-archive.com/qemu-devel%40nongnu.org/msg857944.html
2022-08-24
Published