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 dis
Noroxi assessment
Priority: Monitor (action score 22/100)
- The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
- Probability of exploitation in the next 30 days: 0.51% (FIRST EPSS).
- Someone with local access to the system can trigger it. A low-privileged account is enough. No user action is required. No special conditions are required; it is repeatable.
- Fixed version: libiscsi (AlmaLinux:8) 1.18.0-8.module_el8.5.0+2608+72063365, 1.18.0-8.module_el8.3.0+2048+e7a0a3ea, 1.18.0-8.module_el8.6.0+2880+7d9e3703; libiscsi-devel (AlmaLinux:8) 1.18.0-8.module_el8.5.0+2608+72063365, 1.18.0-8.module_el8.3.0+2048+e7a0a3ea, 1.18.0-8.module_el8.6.0+2880+7d9e3703; libiscsi-utils (AlmaLinux:8) 1.18.0-8.module_el8.6.0+2880+7d9e3703, 1.18.0-8.module_el8.5.0+2608+72063365, 1.18.0-8.module_el8.3.0+2048+e7a0a3ea.
Low priority for now. Upgrade to libiscsi (AlmaLinux:8) 1.18.0-8.module_el8.5.0+2608+72063365, 1.18.0-8.module_el8.3.0+2048+e7a0a3ea, 1.18.0-8.module_el8.6.0+2880+7d9e3703; libiscsi-devel (AlmaLinux:8) 1.18.0-8.module_el8.5.0+2608+72063365, 1.18.0-8.module_el8.3.0+2048+e7a0a3ea, 1.18.0-8.module_el8.6.0+2880+7d9e3703; libiscsi-utils (AlmaLinux:8) 1.18.0-8.module_el8.6.0+2880+7d9e3703, 1.18.0-8.module_el8.5.0+2608+72063365, 1.18.0-8.module_el8.3.0+2048+e7a0a3ea or later.
Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it
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.
- BDU:2019-02736
- ALSA-2019:3345
- DLA-1781-1
- DSA-4454-1
- openSUSE-SU-2019:1405-1
- RHSA-2019:1650
- RHSA-2019:2078
- RHSA-2019:2425
- RHSA-2019:2553
- RHSA-2019:3345
- RLSA-2019:3345
- SUSE-SU-2019:0825-1
- SUSE-SU-2019:0827-1
- SUSE-SU-2019:0891-1
- SUSE-SU-2019:0921-1
- SUSE-SU-2019:1238-1
- SUSE-SU-2019:1239-1
- SUSE-SU-2019:1268-1
- SUSE-SU-2019:1269-1
- SUSE-SU-2019:1272-1
- Published
- Jun 3, 2019
- Updated
- Jun 16, 2026
- EPSS
- 0.5% · 42th percentile
- CWE
- CWE-908
Report tools
Action score
22
Monitor
Low priority for now.
- CVSS
- 22 / 40 · 5.5 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 0 / 30 · 0.5%
Get told when this record changes
- Not in KEV: no record of exploitation in the wild
- No public exploit code on record
- A fix has been released
If any of these changes, we'll tell you in the daily email digest.
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Noroxi analysis
What does it mean in your environment?
The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.
We use this product, ask for helpAffected systems
Is your version affected?
Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.
| Vendor | Product | CPE |
|---|---|---|
| qemu | qemu | cpe:2.3:a:qemu:qemu |
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- qemu qemu3.0.0
Package-level exposure
OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.
| Ecosystem | Package | Affected range | Fix |
|---|---|---|---|
| AlmaLinux:8 | libiscsi | before 1.18.0-8.module_el8.5.0+2608+72063365 | 1.18.0-8.module_el8.5.0+2608+72063365 |
| AlmaLinux:8 | libiscsi | before 1.18.0-8.module_el8.3.0+2048+e7a0a3ea | 1.18.0-8.module_el8.3.0+2048+e7a0a3ea |
| AlmaLinux:8 | libiscsi | before 1.18.0-8.module_el8.6.0+2880+7d9e3703 | 1.18.0-8.module_el8.6.0+2880+7d9e3703 |
| AlmaLinux:8 | libiscsi-devel | before 1.18.0-8.module_el8.5.0+2608+72063365 | 1.18.0-8.module_el8.5.0+2608+72063365 |
| AlmaLinux:8 | libiscsi-devel | before 1.18.0-8.module_el8.3.0+2048+e7a0a3ea | 1.18.0-8.module_el8.3.0+2048+e7a0a3ea |
| AlmaLinux:8 | libiscsi-devel | before 1.18.0-8.module_el8.6.0+2880+7d9e3703 | 1.18.0-8.module_el8.6.0+2880+7d9e3703 |
| AlmaLinux:8 | libiscsi-utils | before 1.18.0-8.module_el8.6.0+2880+7d9e3703 | 1.18.0-8.module_el8.6.0+2880+7d9e3703 |
| AlmaLinux:8 | libiscsi-utils | before 1.18.0-8.module_el8.5.0+2608+72063365 | 1.18.0-8.module_el8.5.0+2608+72063365 |
| AlmaLinux:8 | libiscsi-utils | before 1.18.0-8.module_el8.3.0+2048+e7a0a3ea | 1.18.0-8.module_el8.3.0+2048+e7a0a3ea |
| AlmaLinux:8 | netcf | before 0.2.8-12.module_el8.5.0+2608+72063365 | 0.2.8-12.module_el8.5.0+2608+72063365 |
| AlmaLinux:8 | netcf | before 0.2.8-12.module_el8.3.0+2048+e7a0a3ea | 0.2.8-12.module_el8.3.0+2048+e7a0a3ea |
| AlmaLinux:8 | netcf | before 0.2.8-12.module_el8.6.0+2880+7d9e3703 | 0.2.8-12.module_el8.6.0+2880+7d9e3703 |
| AlmaLinux:8 | netcf-devel | before 0.2.8-12.module_el8.3.0+2048+e7a0a3ea | 0.2.8-12.module_el8.3.0+2048+e7a0a3ea |
| AlmaLinux:8 | netcf-devel | before 0.2.8-12.module_el8.6.0+2880+7d9e3703 | 0.2.8-12.module_el8.6.0+2880+7d9e3703 |
| AlmaLinux:8 | netcf-devel | before 0.2.8-12.module_el8.5.0+2608+72063365 | 0.2.8-12.module_el8.5.0+2608+72063365 |
| AlmaLinux:8 | netcf-libs | before 0.2.8-12.module_el8.3.0+2048+e7a0a3ea | 0.2.8-12.module_el8.3.0+2048+e7a0a3ea |
| AlmaLinux:8 | netcf-libs | before 0.2.8-12.module_el8.5.0+2608+72063365 | 0.2.8-12.module_el8.5.0+2608+72063365 |
| AlmaLinux:8 | netcf-libs | before 0.2.8-12.module_el8.6.0+2880+7d9e3703 | 0.2.8-12.module_el8.6.0+2880+7d9e3703 |
| AlmaLinux:8 | sgabios | before 1:0.20170427git-3.module_el8.3.0+2048+e7a0a3ea | 1:0.20170427git-3.module_el8.3.0+2048+e7a0a3ea |
| AlmaLinux:8 | sgabios | before 1:0.20170427git-3.module_el8.5.0+2608+72063365 | 1:0.20170427git-3.module_el8.5.0+2608+72063365 |
| AlmaLinux:8 | sgabios-bin | before 1:0.20170427git-3.module_el8.5.0+2608+72063365 | 1:0.20170427git-3.module_el8.5.0+2608+72063365 |
| AlmaLinux:8 | sgabios-bin | before 1:0.20170427git-3.module_el8.6.0+2880+7d9e3703 | 1:0.20170427git-3.module_el8.6.0+2880+7d9e3703 |
| Debian:12 | qemu | before 1:3.1+dfsg-6 | 1:3.1+dfsg-6 |
| Debian:12 | slirp4netns | before 0.3.1-1 | 0.3.1-1 |
+96
Same product
qemu: all recordsOther highest-scoring records for the same primary product.
- CVE-2019-12928The QMP migrate command in QEMU version 4.0.0 and earlier is vulnerable to OS command injection, which allows the remote attacker to achieve46Plan
- CVE-2015-8556Local privilege escalation vulnerability in the Gentoo QEMU package before 2.5.0-r1.44Plan
- CVE-2017-15118A stack-based buffer overflow vulnerability was found in NBD server implementation in qemu before 2.11 allowing a client to request an expor43Plan
- CVE-2022-36648The hardware emulation in the of_dpa_cmd_add_l2_flood of rocker device model in QEMU, as used in 7.0.0 and earlier, allows remote attackers 41Plan
- CVE-2017-16845hw/input/ps2.c in Qemu does not validate 'rptr' and 'count' values during guest migration, leading to out-of-bounds access.41Plan
- CVE-2016-7161Heap-based buffer overflow in the .receive callback of xlnx.xps-ethernetlite in QEMU (aka Quick Emulator) allows attackers to execute arbitr41Plan
Remediation
Which version to upgrade to
Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.
| Product / package | Fixed version | Source |
|---|---|---|
| almalinux:libiscsi | 1.18.0-8.module_el8.6.0+2880+7d9e3703 · AlmaLinux:8 | Package registry (OSV) |
| almalinux:libiscsi-devel | 1.18.0-8.module_el8.6.0+2880+7d9e3703 · AlmaLinux:8 | Package registry (OSV) |
| almalinux:libiscsi-utils | 1.18.0-8.module_el8.3.0+2048+e7a0a3ea · AlmaLinux:8 | Package registry (OSV) |
| almalinux:netcf | 0.2.8-12.module_el8.5.0+2608+72063365 · AlmaLinux:8 | Package registry (OSV) |
| almalinux:netcf-devel | 0.2.8-12.module_el8.3.0+2048+e7a0a3ea · AlmaLinux:8 | Package registry (OSV) |
| almalinux:netcf-libs | 0.2.8-12.module_el8.6.0+2880+7d9e3703 · AlmaLinux:8 | Package registry (OSV) |
| almalinux:sgabios | 1:0.20170427git-3.module_el8.5.0+2608+72063365 · AlmaLinux:8 | Package registry (OSV) |
| almalinux:sgabios-bin | 1:0.20170427git-3.module_el8.5.0+2608+72063365 · AlmaLinux:8 | Package registry (OSV) |
| debian:qemu | 1:3.1+dfsg-6 · Debian:12 | Package registry (OSV) |
| debian:slirp4netns | 0.3.1-1 · Debian:12 | Package registry (OSV) |
| opensuse:qemu | 2.11.2-lp150.7.22.1 · openSUSE:Leap 15.0 | Package registry (OSV) |
| red hat:qemu-guest-agent | 2:0.12.1.2-2.506.el6_10.4 · Red Hat:enterprise_linux:6::client | Package registry (OSV) |
| red hat:qemu-img | 2:0.12.1.2-2.506.el6_10.4 · Red Hat:enterprise_linux:6::client | Package registry (OSV) |
| red hat:qemu-img-rhev | 10:2.12.0-33.el7 · Red Hat:openstack:10::el7 | Package registry (OSV) |
| red hat:qemu-kvm | 2:0.12.1.2-2.506.el6_10.4 · Red Hat:enterprise_linux:6::client | Package registry (OSV) |
| red hat:qemu-kvm-common | 10:1.5.3-167.el7 · Red Hat:enterprise_linux:7::client | Package registry (OSV) |
| red hat:qemu-kvm-common-rhev | 10:2.12.0-33.el7 · Red Hat:openstack:10::el7 | Package registry (OSV) |
| red hat:qemu-kvm-debuginfo | 2:0.12.1.2-2.506.el6_10.4 · Red Hat:enterprise_linux:6::client | Package registry (OSV) |
| red hat:qemu-kvm-rhev | 10:2.12.0-33.el7 · Red Hat:openstack:10::el7 | Package registry (OSV) |
| red hat:qemu-kvm-rhev-debuginfo | 10:2.12.0-33.el7 · Red Hat:openstack:10::el7 | Package registry (OSV) |
| red hat:qemu-kvm-tools | 2:0.12.1.2-2.506.el6_10.4 · Red Hat:enterprise_linux:6::client | Package registry (OSV) |
| red hat:qemu-kvm-tools-rhev | 10:2.12.0-33.el7 · Red Hat:openstack:10::el7 | Package registry (OSV) |
| red hat:SLOF | 0:20171214-6.gitfa98132.module+el8.1.0+4066+0f1aadab · Red Hat:enterprise_linux:8::appstream | Package registry (OSV) |
| rocky linux:libiscsi | 0:1.18.0-8.module+el8.7.0+1084+97b81f61 · Rocky Linux:8 | Package registry (OSV) |
| rocky linux:netcf | 0:0.2.8-12.module+el8.7.0+1084+97b81f61 · Rocky Linux:8 | Package registry (OSV) |
| rocky linux:sgabios | 1:0.20170427git-3.module+el8.7.0+1084+97b81f61 · Rocky Linux:8 | Package registry (OSV) |
| suse:kvm | 1.4.2-60.24.1 · SUSE:Linux Enterprise Server 11 SP4-LTSS | Package registry (OSV) |
| suse:qemu | 2.11.2-5.13.1 · SUSE:Linux Enterprise Desktop 12 SP4 | Package registry (OSV) |
| suse:xen | 4.5.5_28-22.58.1 · SUSE:Linux Enterprise Server for SAP Applications 12 SP1 | Package registry (OSV) |
Exploit status
No known public exploit
No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.
Research context
For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.
Timeline
From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.
No dated events beyond publication.
FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).
Patch and commit links
Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.
No commit or PR link among the references.
Credits
All researchersFinders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.
No credits in the CNA record.
Variant candidates
Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.
No nightly-computed relations.
Chain candidates
An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.
—
Bug bounty scope
No known public program.
Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).
Technical details
Attack conditions
- Someone with local access to the system can trigger it.
- A low-privileged account is enough.
- No user action is required.
- No special conditions are required; it is repeatable.
If successful
- Confidentiality
- high · data can be read
- Integrity
- none
- Availability
- none
- Attack vector
- Local
- Attack complexity
- Low
- Privileges required
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality impact
- High
- Integrity impact
- None
- Availability impact
- None
Weakness class (CWE)
CWE-908 · Use of Uninitialized ResourceCVSS vector
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
nvd-primary
Attack context
MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.
MITRE has no CAPEC/ATT&CK mapping for this CWE.
Change log
- Fix✗ → ✓
For records you follow, these changes also arrive as notifications. →
References
Show all references (6 more)Show less
- access.redhat.com/errata/RHSA-2019:2078
- access.redhat.com/errata/RHSA-2019:2425
- access.redhat.com/errata/RHSA-2019:2553
- access.redhat.com/errata/RHSA-2019:3345
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RVDHJB2QKXNDU7OFXIHIL5O5VN5QCSZL/
- lists.gnu.org/archive/html/qemu-devel/2019-03/msg00400.html
Vendor advisories and official records. Exploit/PoC links are deliberately left out.