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CVE-2019-15890

26
FAUCET Score

CVE-2019-15890 is a use-after-free vulnerability in libslirp 4.0.0, specifically within the ip_reass function in ip_input.c, which also affects QEMU 4.1.0. This flaw carries a high severity CVSS score of 7.5, indicating it can be exploited remotely with low attack complexity, potentially leading to a denial of service. There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
4.0.0CPE matchmatch criteria
cpe:2.3:a:libslirp_project:libslirp:4.0.0:-:*:*:*:*:*:*
4.1.0CPE matchmatch criteria
cpe:2.3:a:qemu:qemu:4.1.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.5HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
4.03%
Probability of exploitation in next 30 days
EPSS Percentile
89.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0403 is in the 81st percentile among its peer group of 51,485 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (13)

redhatpatch availablevia redhat_api
Product: Advanced Virtualization for RHEL 8.2.1Fixed in: virt:8.2-8020120200707202843.11e3e113
View patch
redhatpatch availablevia redhat_api
Product: Advanced Virtualization for RHEL 8.2.1Fixed in: virt-devel:8.2-8020120200707202843.11e3e113
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: qemu-kvm-2:0.12.1.2-2.506.el6_10.6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7 ExtrasFixed in: slirp4netns-0:0.3.0-8.el7_7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: container-tools:rhel8-8010120200116121758.53d07e52
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: virt-devel:rhel-8030020200909014558.30b713e6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: virt:rhel-8030020200909014558.30b713e6
View patch
redhatvendor investigatingvia redhat_api
Product: Red Hat OpenStack Platform 10 (Newton)Fixed in: qemu-kvm-rhev
redhatvendor investigatingvia redhat_api
Product: Red Hat OpenStack Platform 13 (Queens)Fixed in: qemu-kvm-rhev
redhatno patchvia redhat_api
Product: Red Hat Enterprise Linux 8 Advanced VirtualizationFixed in: qemu-kvm
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: qemu-kvm
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: qemu-kvm-ma
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: qemu-kvm-rhev

Vendor Advisories (1)

redhatCVE-2019-15890Moderate

QEMU: Slirp: use-after-free during packet reassembly

Aug 25, 2019

References

lists.opensuse.org / opensuse-security-announce/2019-11/msg00034.html
access.redhat.com / errata/RHSA-2020:0775
gitlab.freedesktop.org / slirp/libslirp/commit/c5927943
PatchThird Party Advisory
lists.debian.org / debian-lts-announce/2019/09/msg00021.html
seclists.org / bugtraq/2020/Feb/0
usn.ubuntu.com / 4191-1
usn.ubuntu.com / 4191-2
debian.org / security/2020/dsa-4616
openwall.com / lists/oss-security/2019/09/06/3
Mailing ListPatchThird Party Advisory