CVE-2020-15469
published 2020-07-02CVE-2020-15469: In QEMU 4.2.0, a MemoryRegionOps object may lack read/write callback methods, leading to a NULL pointer dereference.
PriorityP46low2.3CVSS 3.1
AVLACLPRHUINSUCNINAL
EPSS
0.43%
34.4th percentile
In QEMU 4.2.0, a MemoryRegionOps object may lack read/write callback methods, leading to a NULL pointer dereference.
Affected
13 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | debian_linux | — | — |
| debian | debian_linux | — | — |
| debian | qemu | < qemu 1:6.0+dfsg-3 (bookworm) | qemu 1:6.0+dfsg-3 (bookworm) |
| msrc | cbl_mariner_1.0_arm | — | — |
| msrc | cbl_mariner_1.0_x64 | — | — |
| msrc | cm1_qemu-kvm_4.2.0-21_on_cbl_mariner_1.0 | — | — |
| qemu | qemu | <= 5.0.1 | — |
| qemu | qemu | >= 0 < 1:6.0+dfsg-3 | 1:6.0+dfsg-3 |
| qemu | qemu | >= 0 < 1:6.0+dfsg-3 | 1:6.0+dfsg-3 |
| qemu | qemu | >= 0 < 1:6.0+dfsg-3 | 1:6.0+dfsg-3 |
| qemu | qemu | >= 0 < 1:2.11+dfsg-1ubuntu7.37 | 1:2.11+dfsg-1ubuntu7.37 |
| qemu | qemu | >= 0 < 1:4.2-3ubuntu6.17 | 1:4.2-3ubuntu6.17 |
| ubuntu | qemu | — | — |
CVSS provenance
nvdv3.12.3LOWCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:L
nvdv2.02.1LOWAV:L/AC:L/Au:N/C:N/I:N/A:P
osv2.3LOW
vendor_ubuntu3.8LOW
vendor_debian2.3LOW
vendor_msrc2.3LOW
vendor_redhat2.3LOW
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Ubuntu
QEMU regression
vendor_ubuntu·2026-06-28·CVSS 3.8
CVE-2020-11947 [LOW] QEMU regression
Title: QEMU regression
Summary: USN-8412-1 introduced a regression in QEMU
USN-8412-1 fixed vulnerabilities QEMU. On Ubuntu 20.04 LTS, the fix for
CVE-2024-4467 was incomplete and prevented the creation of boot volumes
from qcow2 images. This update fixes the problem.
We apologize for the inconvenience.
Original advisory details:
Felipe Franciosi, Raphael Norwitz, and Peter Turschmid discovered that the
iSCSI block driver in QEMU incorrectly handled certain responses from an
iSCSI server. A remote attacker could possibly use this issue to cause
QEMU to crash, resulting in a denial of service, or possibly execute
arbitrary code. This issue only affected Ubuntu 14.04 LTS. (CVE-2020-1711)
It was discovered that the iSCSI block driver in QEMU incorrectly handled
certain memory operations
Ubuntu
QEMU vulnerabilities
vendor_ubuntu·2026-06-09·CVSS 3.8
CVE-2021-3416 [LOW] QEMU vulnerabilities
Title: QEMU vulnerabilities
Summary: Several security issues were fixed in QEMU.
Felipe Franciosi, Raphael Norwitz, and Peter Turschmid discovered that the
iSCSI block driver in QEMU incorrectly handled certain responses from an
iSCSI server. A remote attacker could possibly use this issue to cause QEMU
to crash, resulting in a denial of service, or possibly execute arbitrary
code. This issue only affected Ubuntu 14.04 LTS. (CVE-2020-1711)
It was discovered that the iSCSI block driver in QEMU incorrectly handled
certain memory operations, leading to a heap-based buffer over-read. An
attacker could possibly use this issue to expose sensitive information from
the host. This issue only affected Ubuntu 14.04 LTS. (CVE-2020-11947)
Ziming Zhang discovered that the SM501 display driver in QEM
Ubuntu
QEMU vulnerabilities
vendor_ubuntu·2021-07-15·CVSS 2.3
CVE-2021-3594 [LOW] QEMU vulnerabilities
Title: QEMU vulnerabilities
Summary: Several security issues were fixed in QEMU.
Lei Sun discovered that QEMU incorrectly handled certain MMIO operations.
An attacker inside the guest could possibly use this issue to cause QEMU to
crash, resulting in a denial of service. (CVE-2020-15469)
Wenxiang Qian discovered that QEMU incorrectly handled certain ATAPI
commands. An attacker inside the guest could possibly use this issue to
cause QEMU to crash, resulting in a denial of service. This issue only
affected Ubuntu 21.04. (CVE-2020-29443)
Cheolwoo Myung discovered that QEMU incorrectly handled SCSI device
emulation. An attacker inside the guest could possibly use this issue to
cause QEMU to crash, resulting in a denial of service. (CVE-2020-35504,
CVE-2020-35505, CVE-2021-3392)
Alex Xu di
Microsoft
In QEMU 4.2.0 a MemoryRegionOps object may lack read/write callback methods leading to a NULL pointer dereference.
vendor_msrc·2020-07-14·CVSS 2.3
CVE-2020-15469 [LOW] CWE-476 In QEMU 4.2.0 a MemoryRegionOps object may lack read/write callback methods leading to a NULL pointer dereference.
In QEMU 4.2.0 a MemoryRegionOps object may lack read/write callback methods leading to a NULL pointer dereference.
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 will update the CVE to reflect this.
Mariner: Mariner
mitre: mitre
Customer Action Required: Yes
Red Hat
QEMU: MMIO ops null pointer dereference may lead to DoS
vendor_redhat·2020-06-17·CVSS 2.3
CVE-2020-15469 [LOW] CWE-476 QEMU: MMIO ops null pointer dereference may lead to DoS
QEMU: MMIO ops null pointer dereference may lead to DoS
In QEMU 4.2.0, a MemoryRegionOps object may lack read/write callback methods, leading to a NULL pointer dereference.
A NULL pointer dereference flaw was found in various system emulators of QEMU that occurs while performing MMIO r/w operations when the respective handler function is not defined. This flaw allows a privileged guest user to invoke the MMIO operation to crash the QEMU process on the host, resulting in a denial of service.
Statement: In Red Hat OpenStack Platform, because the flaw has a lower impact and the fix would require a substantial amount of development, no update will be provided at this time for the RHOSP qemu-kvm-rhev package.
Package: kvm (Red Hat Enterprise Linux 5) - Not affected
Package: qemu-kvm (Red H
Debian
CVE-2020-15469: qemu - In QEMU 4.2.0, a MemoryRegionOps object may lack read/write callback methods, le...
vendor_debian·2020·CVSS 2.3
CVE-2020-15469 [LOW] CVE-2020-15469: qemu - In QEMU 4.2.0, a MemoryRegionOps object may lack read/write callback methods, le...
In QEMU 4.2.0, a MemoryRegionOps object may lack read/write callback methods, leading to a NULL pointer dereference.
Scope: local
bookworm: resolved (fixed in 1:6.0+dfsg-3)
bullseye: open
forky: resolved (fixed in 1:6.0+dfsg-3)
sid: resolved (fixed in 1:6.0+dfsg-3)
trixie: resolved (fixed in 1:6.0+dfsg-3)
GHSA
GHSA-35fj-h53g-7cqv: In QEMU 4
ghsa_unreviewed·2022-05-24
CVE-2020-15469 [LOW] CWE-476 GHSA-35fj-h53g-7cqv: In QEMU 4
In QEMU 4.2.0, a MemoryRegionOps object may lack read/write callback methods, leading to a NULL pointer dereference.
OSV
qemu vulnerabilities
osv·2021-07-15·CVSS 2.3
CVE-2020-15469 [LOW] qemu vulnerabilities
qemu vulnerabilities
Lei Sun discovered that QEMU incorrectly handled certain MMIO operations.
An attacker inside the guest could possibly use this issue to cause QEMU to
crash, resulting in a denial of service. (CVE-2020-15469)
Wenxiang Qian discovered that QEMU incorrectly handled certain ATAPI
commands. An attacker inside the guest could possibly use this issue to
cause QEMU to crash, resulting in a denial of service. This issue only
affected Ubuntu 21.04. (CVE-2020-29443)
Cheolwoo Myung discovered that QEMU incorrectly handled SCSI device
emulation. An attacker inside the guest could possibly use this issue to
cause QEMU to crash, resulting in a denial of service. (CVE-2020-35504,
CVE-2020-35505, CVE-2021-3392)
Alex Xu discovered that QEMU incorrectly handled the virtio-fs shared f
OSV
CVE-2020-15469: In QEMU 4
osv·2020-07-02·CVSS 2.3
CVE-2020-15469 [LOW] CVE-2020-15469: In QEMU 4
In QEMU 4.2.0, a MemoryRegionOps object may lack read/write callback methods, leading to a NULL pointer dereference.
No detection rules found.
No public exploits indexed.
Bugzilla
CVE-2020-15469 qemu: MMIO ops null pointer dereference may lead to DoS [fedora-all]
bugzilla·2020-07-02·CVSS 2.3
CVE-2020-15469 [LOW] CVE-2020-15469 qemu: MMIO ops null pointer dereference may lead to DoS [fedora-all]
CVE-2020-15469 qemu: MMIO ops null pointer dereference may lead to DoS [fedora-all]
This is an automatically created tracking bug! It was created to ensure
that one or more security vulnerabilities are fixed in affected versions
of fedora-all.
For comments that are specific to the vulnerability please use bugs filed
against the "Security Response" product referenced in the "Blocks" field.
For more information see:
http://fedoraproject.org/wiki/Security/TrackingBugs
When submitting as an update, use the fedpkg template provided in the next
comment(s). This will include the bug IDs of this tracking bug as well as
the relevant top-level CVE bugs.
Please also mention the CVE IDs being fixed in the RPM changelog and the
fedpkg commit message.
NOTE: this issue affects multiple supported ve
Bugzilla
CVE-2020-15469 QEMU: MMIO ops null pointer dereference may lead to DoS
bugzilla·2020-07-02·CVSS 2.3
CVE-2020-15469 [LOW] CVE-2020-15469 QEMU: MMIO ops null pointer dereference may lead to DoS
CVE-2020-15469 QEMU: MMIO ops null pointer dereference may lead to DoS
A NULL pointer dereference issue was found in various system emulators of QEMU. It could occur while performing MMIO r/w operations, in case the respective handler function is not defined. A privileged guest user able to invoke MMIO operation may use this flaw to crash the QEMU process on the host resulting in DoS scenario.
Upstream patch(es):
-> https://lists.gnu.org/archive/html/qemu-devel/2020-06/msg09961.html
Reference:
-> https://www.openwall.com/lists/oss-security/2020/07/02/1
Discussion:
Acknowledgments:
Name: Lei Sun
---
Created qemu tracking bugs for this issue:
Affects: fedora-all [bug 1853156]
Created xen tracking bugs for this issue:
Affects: fedora-all [bug 1853157]
---
Statement:
In Red Hat
Bugzilla
CVE-2020-15469 xen: QEMU: MMIO ops null pointer dereference may lead to DoS [fedora-all]
bugzilla·2020-07-02·CVSS 2.3
CVE-2020-15469 [LOW] CVE-2020-15469 xen: QEMU: MMIO ops null pointer dereference may lead to DoS [fedora-all]
CVE-2020-15469 xen: QEMU: MMIO ops null pointer dereference may lead to DoS [fedora-all]
This is an automatically created tracking bug! It was created to ensure
that one or more security vulnerabilities are fixed in affected versions
of fedora-all.
For comments that are specific to the vulnerability please use bugs filed
against the "Security Response" product referenced in the "Blocks" field.
For more information see:
http://fedoraproject.org/wiki/Security/TrackingBugs
When submitting as an update, use the fedpkg template provided in the next
comment(s). This will include the bug IDs of this tracking bug as well as
the relevant top-level CVE bugs.
Please also mention the CVE IDs being fixed in the RPM changelog and the
fedpkg commit message.
NOTE: this issue affects multiple support
http://www.openwall.com/lists/oss-security/2020/07/02/1https://lists.debian.org/debian-lts-announce/2021/02/msg00024.htmlhttps://lists.debian.org/debian-lts-announce/2022/09/msg00008.htmlhttps://lists.gnu.org/archive/html/qemu-devel/2020-06/msg09961.htmlhttp://www.openwall.com/lists/oss-security/2020/07/02/1https://lists.debian.org/debian-lts-announce/2021/02/msg00024.htmlhttps://lists.debian.org/debian-lts-announce/2022/09/msg00008.htmlhttps://lists.gnu.org/archive/html/qemu-devel/2020-06/msg09961.html
2020-07-02
Published