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CVE-2019-3812

QEMU, through version 2.10 and through version 3.1.0, is vulnerable to an out-of-bounds read of...

4.4 MediumFix available

QEMU, through version 2.10 and through version 3.1.0, is vulnerable to an out-of-bounds read of up to 128 bytes in the hw/i2c/i2c-ddc.c:i2c_ddc() function. A local attacker with permission to execute i2c commands could exploit this to read stack memory of the qemu process on the host.

Attack profile

How easy it is to exploit

Attack vector
Local
Complexity
Low
Privileges needed
High
User interaction
None

What an attacker can affect

Confidentiality
High
Integrity
None
Availability
None

Exploit likelihood

0.43%Down 0.7 points since Apr 14, 2021
90%50%10%1%

What each source reports

CVE List Score used 4.4

QEMU, through version 2.10 and through version 3.1.0, is vulnerable to an out-of-bounds read of up to 128 bytes in the hw/i2c/i2c-ddc.c:i2c_ddc() function. A local attacker with permission to execute i2c commands could exploit this to read stack memory of the qemu process on the host.

Record
CVE-2019-3812
CVSS 3.0
4.4 MediumCVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N
Weakness
CWE-119
Updated
2026-11-02
EUVDEUVD-2019-13435 4.4

QEMU, through version 2.10 and through version 3.1.0, is vulnerable to an out-of-bounds read of up to 128 bytes in the hw/i2c/i2c-ddc.c:i2c_ddc() function. A local attacker with permission to execute i2c commands could exploit this to read stack memory of the qemu process on the host.

Record
EUVD-2019-13435
CVSS 3.0
4.4 MediumCVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N
Updated
2026-11-03
GitHub AdvisoriesGHSA-4mh7-g8hh-qp2p 5.5

QEMU, through version 2.10 and through version 3.1.0, is vulnerable to an out-of-bounds read of...

QEMU, through version 2.10 and through version 3.1.0, is vulnerable to an out-of-bounds read of up to 128 bytes in the hw/i2c/i2c-ddc.c:i2c_ddc() function. A local attacker with permission to execute i2c commands could exploit this to read stack memory of the qemu process on the host.

Record
GHSA-4mh7-g8hh-qp2p
CVSS 3.0
5.5 MediumCVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Weakness
CWE-119, CWE-125
Updated
2026-11-02
NVD 4.4

QEMU, through version 2.10 and through version 3.1.0, is vulnerable to an out-of-bounds read of up to 128 bytes in the hw/i2c/i2c-ddc.c:i2c_ddc() function. A local attacker with permission to execute i2c commands could exploit this to read stack memory of the qemu process on the host.

Record
CVE-2019-3812
CVSS 3.0
4.4 MediumCVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N
CVSS 3.0
5.5 MediumCVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
CVSS 2.0
2.1 LowAV:L/AC:L/Au:N/C:P/I:N/A:N
Weakness
CWE-119, CWE-125
Updated
2026-11-02
OSV 5.5

QEMU, through version 2.10 and through version 3.1.0, is vulnerable to an out-of-bounds read of up to 128 bytes in the hw/i2c/i2c-ddc.c:i2c_ddc() function. A local attacker with permission to execute i2c commands could exploit this to read stack memory of the qemu process on the host.

Record
CVE-2019-3812
CVSS 3.0
5.5 MediumCVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Updated
2026-11-02
OSVDEBIAN-CVE-2019-3812 5.5

QEMU, through version 2.10 and through version 3.1.0, is vulnerable to an out-of-bounds read of up to 128 bytes in the hw/i2c/i2c-ddc.c:i2c_ddc() function. A local attacker with permission to execute i2c commands could exploit this to read stack memory of the qemu process on the host.

Record
DEBIAN-CVE-2019-3812
CVSS 3.0
5.5 MediumCVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Updated
2026-11-02
Show 5 moreShow less
OSVUBUNTU-CVE-2019-3812 5.5

QEMU, through version 2.10 and through version 3.1.0, is vulnerable to an out-of-bounds read of up to 128 bytes in the hw/i2c/i2c-ddc.c:i2c_ddc() function. A local attacker with permission to execute i2c commands could exploit this to read stack memory of the qemu process on the host.

Record
UBUNTU-CVE-2019-3812
CVSS 3.0
5.5 MediumCVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
CVSS 3.0
4.4 MediumCVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N
Updated
2026-11-02
OSVopenSUSE-SU-2019:1405-1 No score

Security update for qemu

This update for qemu fixes the following issues:

Security issues fixed:

  • CVE-2019-9824: Fixed an information leak in slirp (bsc#1129622)
  • CVE-2019-8934: Added method to specify whether or not to expose certain ppc64 host information, which can be considered a security issue (bsc#1126455)
  • CVE-2019-3812: Fixed OOB memory access and information leak in virtual monitor interface (bsc#1125721)
  • CVE-2018-20815: Fix DOS possibility in device tree processing (bsc#1130675)
  • Adjust fix for CVE-2019-8934 (bsc#1126455) to match the latest upstream adjustments for the same. Basically now the security fix is to provide a dummy host-model and host-serial value, which overrides getting that value from the host
  • CVE-2018-12126 CVE-2018-12127 CVE-2018-12130 CVE-2019-11091: Added x86 cpu feature 'md-clear' (bsc#1111331)

Other bugs fixed:

  • Use a new approach to handling the file input to -smbios option, which accepts either legacy or per-spec formats regardless of the machine type.

This update was imported from the SUSE:SLE-15:Update update project.

Record
openSUSE-SU-2019:1405-1
Updated
2026-11-02
OSVSUSE-SU-2019:1238-1 No score

Security update for qemu

This update for qemu fixes the following issues:

  • CVE-2019-9824: Fixed an information leak in slirp (bsc#1129622)
  • CVE-2019-8934: Added method to specify whether or not to expose certain ppc64 host information, which can be considered a security issue (bsc#1126455)
  • CVE-2019-3812: Fixed OOB memory access and information leak in virtual monitor interface (bsc#1125721)
  • CVE-2018-20815: Fix DOS possibility in device tree processing (bsc#1130675)
  • Adjust fix for CVE-2019-8934 (bsc#1126455) to match the latest upstream adjustments for the same. Basically now the security fix is to provide a dummy host-model and host-serial value, which overrides getting that value from the host
  • CVE-2018-12126 CVE-2018-12127 CVE-2018-12130 CVE-2019-11091: Added x86 cpu feature 'md-clear' (bsc#1111331)

Other bugs fixed:

  • Use a new approach to handling the file input to -smbios option, which accepts either legacy or per-spec formats regardless of the machine type.
  • Drop the 'ampersand 0x25 shift altgr' line in pt-br keymap file (bsc#1129962)
Record
SUSE-SU-2019:1238-1
Updated
2026-11-02
OSVSUSE-SU-2019:1239-1 No score

Security update for qemu

This update for qemu fixes the following issues:

Security issues fixed:

  • CVE-2019-9824: Fixed an information leak in slirp (bsc#1129622)
  • CVE-2019-8934: Added method to specify whether or not to expose certain ppc64 host information, which can be considered a security issue (bsc#1126455)
  • CVE-2019-3812: Fixed OOB memory access and information leak in virtual monitor interface (bsc#1125721)
  • CVE-2018-20815: Fix DOS possibility in device tree processing (bsc#1130675)
  • Adjust fix for CVE-2019-8934 (bsc#1126455) to match the latest upstream adjustments for the same. Basically now the security fix is to provide a dummy host-model and host-serial value, which overrides getting that value from the host
  • CVE-2018-12126 CVE-2018-12127 CVE-2018-12130 CVE-2019-11091: Added x86 cpu feature 'md-clear' (bsc#1111331)

Other bugs fixed:

  • Use a new approach to handling the file input to -smbios option, which accepts either legacy or per-spec formats regardless of the machine type.
Record
SUSE-SU-2019:1239-1
Updated
2026-11-02
OSVUSN-3923-1 No score

qemu vulnerabilities

Michael Hanselmann discovered that QEMU incorrectly handled the Media Transfer Protocol (MTP). An attacker inside the guest could use this issue to read or write arbitrary files and cause a denial of service, or possibly execute arbitrary code. This issue only affected Ubuntu 18.10. (CVE-2018-16867)

Michael Hanselmann discovered that QEMU incorrectly handled the Media Transfer Protocol (MTP). An attacker inside the guest could use this issue to read arbitrary files, contrary to expectations. This issue only affected Ubuntu 18.04 LTS and Ubuntu 18.10. (CVE-2018-16872)

Zhibin Hu discovered that QEMU incorrectly handled the Plan 9 File System support. An attacker inside the guest could use this issue to cause QEMU to crash, resulting in a denial of service. (CVE-2018-19489)

Li Quang and Saar Amar discovered multiple issues in the QEMU PVRDMA device. An attacker inside the guest could use these issues to cause a denial of service, or possibly execute arbitrary code. This issue only affected Ubuntu 18.10. These issues were resolved by disabling PVRDMA support in Ubuntu 18.10. (CVE-2018-20123, CVE-2018-20124, CVE-2018-20125, CVE-2018-20126, CVE-2018-20191, CVE-2018-20216)

Michael Hanselmann discovered that QEMU incorrectly handled certain i2c commands. A local attacker could possibly use this issue to read QEMU process memory. This issue only affected Ubuntu 18.04 LTS and Ubuntu 18.10. (CVE-2019-3812)

It was discovered that QEMU incorrectly handled the Slirp networking back-end. An attacker inside the guest could use this issue to cause QEMU to crash, resulting in a denial of service, or possibly execute arbitrary code on the host. In the default installation, when QEMU is used with libvirt, attackers would be isolated by the libvirt AppArmor profile. (CVE-2019-6778)

Record
USN-3923-1
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
qemu
Debian:12
 before 1:3.1+dfsg-5
1:3.1+dfsg-5
qemu
Debian:13
 before 1:3.1+dfsg-5
1:3.1+dfsg-5
qemu
Debian:14
 before 1:3.1+dfsg-5
1:3.1+dfsg-5
qemu
Debian:9
From an advisory covering 12 CVEs
 before 1:2.8+dfsg-6+deb9u6, plus listed versions
1:2.8+dfsg-61:2.8+dfsg-6+deb9u11:2.8+dfsg-6+deb9u21:2.8+dfsg-6+deb9u31:2.8+dfsg-6+deb9u41:2.8+dfsg-6+deb9u5
1:2.8+dfsg-6+deb9u6
qemu
SUSE:Linux Enterprise Desktop 12 SP4
From an advisory covering 8 CVEs
 before 2.11.2-5.13.1
2.11.2-5.13.1
qemu
SUSE:Linux Enterprise Server 12 SP4
From an advisory covering 8 CVEs
 before 2.11.2-5.13.1
2.11.2-5.13.1
qemu
SUSE:Linux Enterprise Server for SAP Applications 12 SP4
From an advisory covering 8 CVEs
 before 2.11.2-5.13.1
2.11.2-5.13.1
qemu
SUSE:Linux Enterprise Module for Basesystem 15
From an advisory covering 8 CVEs
 before 2.11.2-9.25.1
2.11.2-9.25.1
qemu
SUSE:Linux Enterprise Module for Server Applications 15
From an advisory covering 8 CVEs
 before 2.11.2-9.25.1
2.11.2-9.25.1
qemu
Ubuntu:18.04:LTS
 before 1:2.11+dfsg-1ubuntu7.12, plus listed versions
1:2.10+dfsg-0ubuntu31:2.10+dfsg-0ubuntu41:2.10+dfsg-0ubuntu51:2.11+dfsg-1ubuntu11:2.11+dfsg-1ubuntu2
Show 14 moreShow less
1:2.11+dfsg-1ubuntu41:2.11+dfsg-1ubuntu51:2.11+dfsg-1ubuntu61:2.11+dfsg-1ubuntu71:2.11+dfsg-1ubuntu7.11:2.11+dfsg-1ubuntu7.21:2.11+dfsg-1ubuntu7.31:2.11+dfsg-1ubuntu7.41:2.11+dfsg-1ubuntu7.51:2.11+dfsg-1ubuntu7.61:2.11+dfsg-1ubuntu7.71:2.11+dfsg-1ubuntu7.81:2.11+dfsg-1ubuntu7.91:2.11+dfsg-1ubuntu7.10
1:2.11+dfsg-1ubuntu7.12
Show 4 moreShow less
Affected packages
PackageAffectedFixed
qemu
Ubuntu:14.04:LTS
From an advisory covering 4 CVEs
 before 2.0.0+dfsg-2ubuntu1.45, plus listed versions
1.5.0+dfsg-3ubuntu51.5.0+dfsg-3ubuntu61.6.0+dfsg-2ubuntu11.6.0+dfsg-2ubuntu21.6.0+dfsg-2ubuntu3
Show 45 moreShow less
1.6.0+dfsg-2ubuntu41.7.0+dfsg-2ubuntu11.7.0+dfsg-2ubuntu21.7.0+dfsg-2ubuntu31.7.0+dfsg-2ubuntu41.7.0+dfsg-2ubuntu51.7.0+dfsg-2ubuntu71.7.0+dfsg-2ubuntu81.7.0+dfsg-2ubuntu91.7.0+dfsg-3ubuntu1~ppa11.7.0+dfsg-3ubuntu11.7.0+dfsg-3ubuntu21.7.0+dfsg-3ubuntu31.7.0+dfsg-3ubuntu41.7.0+dfsg-3ubuntu51.7.0+dfsg-3ubuntu61.7.0+dfsg-3ubuntu72.0.0~rc1+dfsg-0ubuntu12.0.0~rc1+dfsg-0ubuntu22.0.0~rc1+dfsg-0ubuntu32.0.0~rc1+dfsg-0ubuntu3.12.0.0+dfsg-2ubuntu12.0.0+dfsg-2ubuntu1.12.0.0+dfsg-2ubuntu1.22.0.0+dfsg-2ubuntu1.32.0.0+dfsg-2ubuntu1.52.0.0+dfsg-2ubuntu1.62.0.0+dfsg-2ubuntu1.72.0.0+dfsg-2ubuntu1.82.0.0+dfsg-2ubuntu1.92.0.0+dfsg-2ubuntu1.102.0.0+dfsg-2ubuntu1.112.0.0+dfsg-2ubuntu1.132.0.0+dfsg-2ubuntu1.142.0.0+dfsg-2ubuntu1.152.0.0+dfsg-2ubuntu1.162.0.0+dfsg-2ubuntu1.172.0.0+dfsg-2ubuntu1.182.0.0+dfsg-2ubuntu1.192.0.0+dfsg-2ubuntu1.202.0.0+dfsg-2ubuntu1.212.0.0+dfsg-2ubuntu1.222.0.0+dfsg-2ubuntu1.242.0.0+dfsg-2ubuntu1.252.0.0+dfsg-2ubuntu1.26
2.0.0+dfsg-2ubuntu1.45
qemu
Ubuntu:16.04:LTS
From an advisory covering 4 CVEs
 before 1:2.5+dfsg-5ubuntu10.36, plus listed versions
1:2.3+dfsg-5ubuntu91:2.3+dfsg-5ubuntu101:2.4+dfsg-4ubuntu11:2.4+dfsg-4ubuntu21:2.4+dfsg-4ubuntu3
Show 40 moreShow less
1:2.4+dfsg-5ubuntu31:2.5+dfsg-1ubuntu21:2.5+dfsg-1ubuntu31:2.5+dfsg-1ubuntu41:2.5+dfsg-1ubuntu51:2.5+dfsg-5ubuntu11:2.5+dfsg-5ubuntu21:2.5+dfsg-5ubuntu41:2.5+dfsg-5ubuntu61:2.5+dfsg-5ubuntu71:2.5+dfsg-5ubuntu101:2.5+dfsg-5ubuntu10.11:2.5+dfsg-5ubuntu10.21:2.5+dfsg-5ubuntu10.31:2.5+dfsg-5ubuntu10.41:2.5+dfsg-5ubuntu10.51:2.5+dfsg-5ubuntu10.61:2.5+dfsg-5ubuntu10.71:2.5+dfsg-5ubuntu10.81:2.5+dfsg-5ubuntu10.91:2.5+dfsg-5ubuntu10.101:2.5+dfsg-5ubuntu10.111:2.5+dfsg-5ubuntu10.131:2.5+dfsg-5ubuntu10.141:2.5+dfsg-5ubuntu10.151:2.5+dfsg-5ubuntu10.161:2.5+dfsg-5ubuntu10.201:2.5+dfsg-5ubuntu10.211:2.5+dfsg-5ubuntu10.221:2.5+dfsg-5ubuntu10.241:2.5+dfsg-5ubuntu10.251:2.5+dfsg-5ubuntu10.261:2.5+dfsg-5ubuntu10.281:2.5+dfsg-5ubuntu10.291:2.5+dfsg-5ubuntu10.301:2.5+dfsg-5ubuntu10.311:2.5+dfsg-5ubuntu10.321:2.5+dfsg-5ubuntu10.331:2.5+dfsg-5ubuntu10.341:2.5+dfsg-5ubuntu10.35
1:2.5+dfsg-5ubuntu10.36
qemu
Ubuntu:18.04:LTS
From an advisory covering 4 CVEs
 before 1:2.11+dfsg-1ubuntu7.12, plus listed versions
1:2.10+dfsg-0ubuntu31:2.10+dfsg-0ubuntu41:2.10+dfsg-0ubuntu51:2.11+dfsg-1ubuntu11:2.11+dfsg-1ubuntu2
Show 14 moreShow less
1:2.11+dfsg-1ubuntu41:2.11+dfsg-1ubuntu51:2.11+dfsg-1ubuntu61:2.11+dfsg-1ubuntu71:2.11+dfsg-1ubuntu7.11:2.11+dfsg-1ubuntu7.21:2.11+dfsg-1ubuntu7.31:2.11+dfsg-1ubuntu7.41:2.11+dfsg-1ubuntu7.51:2.11+dfsg-1ubuntu7.61:2.11+dfsg-1ubuntu7.71:2.11+dfsg-1ubuntu7.81:2.11+dfsg-1ubuntu7.91:2.11+dfsg-1ubuntu7.10
1:2.11+dfsg-1ubuntu7.12
qemu
openSUSE:Leap 15.0
From an advisory covering 8 CVEs
 before 2.11.2-lp150.7.22.1
2.11.2-lp150.7.22.1

History

History
RecordedChangedSources
affected, facts
aliasesEUVD
first indexedCVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2019-3812 is a medium vulnerability (CVSS 4.4) in Qemu, published February 19, 2019. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.43%, the 37th percentile. Fixed in qemu 1:3.1+dfsg-5.

References

Show 38 moreShow less
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Left out here: 17 versions. The JSON record has them.

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