QEMU: slirp: information leakage in tcp_emu() due to uninitialized stack variables
Published Jun 3, 2019
5.5
MEDIUMCVSS 3.0
EPSS 0.52%
Description
tcp_emu in slirp/tcp_subr.c (aka slirp/src/tcp_subr.c) in QEMU 3.0.0 uses uninitialized data in an snprintf call, leading to Information disclosure.
Affected products
No data.
No data.
Red Hat Enterprise Linux 6
qemu-kvm-2:0.12.1.2-2.506.el6_10.4
Fixed · RHSA-2019:1650
Red Hat Enterprise Linux 7
qemu-kvm-10:1.5.3-167.el7
Fixed · RHSA-2019:2078
Red Hat Enterprise Linux 8
virt-devel:rhel-8010020190916153839.cdc1202b
Fixed · RHSA-2019:3345
Red Hat Enterprise Linux 8
virt:rhel-8010020190916153839.cdc1202b
Fixed · RHSA-2019:3345
Red Hat OpenStack Platform 10.0 (Newton)
qemu-kvm-rhev-10:2.12.0-33.el7
Fixed · RHSA-2019:2425
Red Hat OpenStack Platform 13.0 (Queens)
qemu-kvm-rhev-10:2.12.0-33.el7
Fixed · RHSA-2019:2425
Red Hat OpenStack Platform 14.0 (Rocky)
qemu-kvm-rhev-10:2.12.0-33.el7
Fixed · RHSA-2019:2425
Red Hat Virtualization 4 for Red Hat Enterprise Linux 7
qemu-kvm-rhev-10:2.12.0-33.el7
Fixed · RHSA-2019:2553
Red Hat Virtualization Engine 4.3
qemu-kvm-rhev-10:2.12.0-33.el7
Fixed · RHSA-2019:2553
Red Hat Enterprise Linux 5
kvm
Will not fix
Red Hat Enterprise Linux 5
xen
Not affected
Red Hat OpenStack Platform 8 (Liberty)
qemu-kvm-rhev
Fix deferred
Red Hat OpenStack Platform 9 (Mitaka)
qemu-kvm-rhev
Fix deferred
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 6 | qemu-kvm-2:0.12.1.2-2.506.el6_10.4 | Fixed | RHSA-2019:1650 |
| Red Hat Enterprise Linux 7 | qemu-kvm-10:1.5.3-167.el7 | Fixed | RHSA-2019:2078 |
| Red Hat Enterprise Linux 8 | virt-devel:rhel-8010020190916153839.cdc1202b | Fixed | RHSA-2019:3345 |
| Red Hat Enterprise Linux 8 | virt:rhel-8010020190916153839.cdc1202b | Fixed | RHSA-2019:3345 |
| Red Hat OpenStack Platform 10.0 (Newton) | qemu-kvm-rhev-10:2.12.0-33.el7 | Fixed | RHSA-2019:2425 |
| Red Hat OpenStack Platform 13.0 (Queens) | qemu-kvm-rhev-10:2.12.0-33.el7 | Fixed | RHSA-2019:2425 |
| Red Hat OpenStack Platform 14.0 (Rocky) | qemu-kvm-rhev-10:2.12.0-33.el7 | Fixed | RHSA-2019:2425 |
| Red Hat Virtualization 4 for Red Hat Enterprise Linux 7 | qemu-kvm-rhev-10:2.12.0-33.el7 | Fixed | RHSA-2019:2553 |
| Red Hat Virtualization Engine 4.3 | qemu-kvm-rhev-10:2.12.0-33.el7 | Fixed | RHSA-2019:2553 |
| Red Hat Enterprise Linux 5 | kvm | Will not fix | n/a |
| Red Hat Enterprise Linux 5 | xen | Not affected | n/a |
| Red Hat OpenStack Platform 8 (Liberty) | qemu-kvm-rhev | Fix deferred | n/a |
| Red Hat OpenStack Platform 9 (Mitaka) | qemu-kvm-rhev | Fix deferred | n/a |
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
1 other source (Red Hat) ▾
CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:C/C:L/I:N/A:N
AV:L/AC:L/Au:N/C:P/I:N/A:N
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 2, 2026.
Score over time
2021–2026- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (15 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 2, 2026 | 0.52% (0.00515) | 41.79th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.52% (0.00515) | 39.55th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.06% (0.00058) | 15.28th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.08% (0.00077) | 35.00th | v3 (v2023.03.01) |
| May 27, 2024 | 0.08% (0.00077) | 32.86th | v3 (v2023.03.01) |
| May 7, 2024 | 0.05% (0.00046) | 16.08th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.05% (0.00046) | 14.06th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.03% (0.01034) | 41.69th | v2 (v2022.01.01) |
| Sep 10, 2022 | 1.03% (0.01034) | 39.91th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.03% (0.01034) | 37.91th | v2 (v2022.01.01) |
| Feb 4, 2022 | 3.62% (0.03625) | 66.63th | v2 (v2022.01.01) |
| Feb 3, 2022 | 7.04% (0.07038) | 83.71th | v1 |
| Jan 6, 2022 | 7.04% (0.07038) | 83.55th | v1 |
| Sep 1, 2021 | 1.66% (0.01659) | 73.96th | v1 |
| Apr 14, 2021 | 1.66% (0.01659) | 0.00th | v1 |
References (11)
- https://access.redhat.com/errata/RHSA-2019:1650 vendor-advisoryx_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2019:2078 vendor-advisoryx_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2019:2425 vendor-advisoryx_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2019:2553 vendor-advisoryx_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2019:3345 vendor-advisoryx_refsource_REDHAT
- https://access.redhat.com/security/cve/CVE-2019-9824 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1678515 Issue Tracking
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RVDHJB2QKXNDU7OFXIHIL5O5VN5QCSZL/ vendor-advisoryx_refsource_FEDORA
- https://lists.gnu.org/archive/html/qemu-devel/2019-03/msg00400.html x_refsource_MISCPatchThird Party Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2019-9824
- https://www.cve.org/CVERecord?id=CVE-2019-9824
| Link | Providers | Tags |
|---|---|---|
| https://access.redhat.com/errata/RHSA-2019:1650 | vendor-advisoryx_refsource_REDHAT | |
| https://access.redhat.com/errata/RHSA-2019:2078 | vendor-advisoryx_refsource_REDHAT | |
| https://access.redhat.com/errata/RHSA-2019:2425 | vendor-advisoryx_refsource_REDHAT | |
| https://access.redhat.com/errata/RHSA-2019:2553 | vendor-advisoryx_refsource_REDHAT | |
| https://access.redhat.com/errata/RHSA-2019:3345 | vendor-advisoryx_refsource_REDHAT | |
| https://access.redhat.com/security/cve/CVE-2019-9824 | Vendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1678515 | Issue Tracking | |
| https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RVDHJB2QKXNDU7OFXIHIL5O5VN5QCSZL/ | vendor-advisoryx_refsource_FEDORA | |
| https://lists.gnu.org/archive/html/qemu-devel/2019-03/msg00400.html | x_refsource_MISCPatchThird Party Advisory | |
| https://nvd.nist.gov/vuln/detail/CVE-2019-9824 | ||
| https://www.cve.org/CVERecord?id=CVE-2019-9824 |
Change history (0)
No recorded changes yet.