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Fencer Vulns
high 7.5

CVE-2019-15890 json

libslirp 4.0.0, as used in QEMU 4.1.0, has a use-after-free in ip_reass in ip_input.c.

published 2019-09-06 7 y ago modified 2026-06-17 4 mo ago also EUVD-2019-6801

cvss
7.5
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
4.0%
EPSS 4.0% chance of exploitation in 30 days, percentile 90%
public exploits
0
none known

Summary

libslirp 4.0.0, as used in QEMU 4.1.0, has a use-after-free in ip_reass in ip_input.c.

Patch / fix

  • qemu Debian 14, Debian 13, Debian 12 1:4.1-2
  • slirp4netns Debian 14, Debian 13, Debian 12 0.4.1-1

debian advisories DEBIAN-CVE-2019-15890

  • qemu Ubuntu 16.04 LTS 1:2.5+dfsg-5ubuntu10.42
  • qemu Ubuntu 18.04 LTS 1:2.11+dfsg-1ubuntu7.20
  • qemu Ubuntu 20.04 LTS 1:4.2-1ubuntu1
  • qemu Ubuntu Pro 14.04 LTS 2.0.0+dfsg-2ubuntu1.47

ubuntu advisories UBUNTU-CVE-2019-15890

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • SLOF advanced virtualization 8.2 20191022-3.git899d9883.module+el8.2.0+5449+efc036dd
  • hivex advanced virtualization 8.2 1.3.18-20.module+el8.2.0+5588+63a201c3
  • netcf advanced virtualization 8.2 0.2.8-12.module+el8.2.0+4793+b09dd2fb
  • swtpm advanced virtualization 8.2 0.2.0-2.20200127gitff5a83b.module+el8.2.0+5579+d71178e0
  • libnbd advanced virtualization 8.2 1.2.2-1.module+el8.2.0+5644+32ac38d4
  • nbdkit advanced virtualization 8.2 1.16.2-4.module+el8.2.1+6710+effcb1df
  • libtpms advanced virtualization 8.2 0.7.0-1.20191018gitdc116933b7.module+el8.2.0+4793+b09dd2fb
  • libvirt advanced virtualization 8.2 6.0.0-25.module+el8.2.1+7154+47ffd890

red hat advisories RHBA-2020:3172RHSA-2020:0775RHSA-2020:0889RHSA-2020:0348RHSA-2020:4676

  • qemu SLES for SAP 12 SP4, SLES 12 SP4-LTSS, OpenStack Cloud Crowbar 9 +1 more 2.11.2-5.32.1
  • qemu SLE Module for Server Applications 15 SP3, SLE Module for Basesystem 15 SP3 5.2.0-17.1
  • qemu SLES for SAP 15 SP1, SLES 15 SP1-LTSS, SLES 15 SP1-BCL +7 more 3.1.1.1-9.27.2
  • qemu SLES for SAP 15, SLES 15-LTSS, SLE High Performance Computing 15-LTSS +1 more 2.11.2-9.46.1
  • qemu SLES for SAP 12 SP3, SLES 12 SP3-LTSS, SLES 12 SP3-BCL +3 more 2.9.1-6.50.1
  • qemu SLE Module for Server Applications 15 SP2, SLE Module for Basesystem 15 SP2, SLE Micro 5.0 4.2.1-11.19.2
  • qemu SLES for SAP 12 SP5, SLES 12 SP5 3.1.1.1-51.1
  • qemu SLES 12 SP2-BCL 2.6.2-41.65.1

suse advisories SUSE-SU-2021:1947-1SUSE-SU-2021:1942-1SUSE-SU-2021:1918-1SUSE-SU-2021:1895-1SUSE-SU-2021:1894-1SUSE-SU-2021:1893-1

  • qemu openSUSE Tumbleweed 6.1.0-32.1
  • qemu openSUSE Leap 15.2 4.2.1-lp152.9.16.2
  • qemu-testsuite openSUSE Leap 15.2 4.2.1-lp152.9.16.7
  • qemu-linux-user openSUSE Leap 15.2 4.2.1-lp152.9.16.1
  • qemu openSUSE Leap 15.3 5.2.0-17.1
  • qemu openSUSE Leap 15.1 3.1.1.1-lp151.7.6.1
  • qemu-linux-user openSUSE Leap 15.1 3.1.1.1-lp151.7.6.1

opensuse advisories openSUSE-SU-2024:11287-1openSUSE-SU-2021:1043-1openSUSE-SU-2021:1942-1openSUSE-SU-2019:2510-1

  • hivex AlmaLinux 8 1.3.18-20.module_el8.3.0+2048+e7a0a3ea
  • netcf AlmaLinux 8 0.2.8-12.module_el8.5.0+2608+72063365
  • netcf AlmaLinux 8 0.2.8-12.module_el8.6.0+2880+7d9e3703
  • netcf AlmaLinux 8 0.2.8-12.module_el8.3.0+2048+e7a0a3ea
  • libnbd AlmaLinux 8 1.2.2-1.module_el8.5.0+2608+72063365
  • libnbd AlmaLinux 8 1.2.2-1.module_el8.3.0+2048+e7a0a3ea
  • nbdkit AlmaLinux 8 1.16.2-4.module_el8.5.0+2608+72063365
  • libvirt AlmaLinux 8 6.0.0-28.module_el8.3.0+2048+e7a0a3ea

almalinux advisories ALSA-2020:4676ALSA-2020:0348

  • hivex Rocky Linux 8 1.3.18-20.module+el8.4.0+534+4680a14e
  • netcf Rocky Linux 8 0.2.8-12.module+el8.7.0+1084+97b81f61
  • netcf Rocky Linux 8 0.2.8-12.module+el8.4.0+534+4680a14e
  • netcf Rocky Linux 8 0.2.8-12.module+el8.6.0+847+b490afdd
  • libnbd Rocky Linux 8 1.2.2-1.module+el8.4.0+534+4680a14e
  • nbdkit Rocky Linux 8 1.16.2-4.module+el8.4.0+534+4680a14e
  • seabios Rocky Linux 8 1.13.0-2.module+el8.4.0+534+4680a14e
  • sgabios Rocky Linux 8 1:0.20170427git-3.module+el8.7.0+1084+97b81f61

rocky linux advisories RLSA-2020:4676RLSA-2020:0348

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2019-15890 updated cvss 5.6

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

  • Red Hat Enterprise Linux 5 kvm
    affected: no fix planned “Out of support scope”
  • Red Hat Enterprise Linux 7 qemu-img, qemu-kvm, libcacard, qemu-img-ma, qemu-kvm-ma, qemu-kvm-rhev, +6 more
    affected: no fix planned “Will not fix”
  • Red Hat Enterprise Linux 8 slirp4netns
    affected: no fix planned “Out of support scope”
  • Red Hat Enterprise Linux 8 Advanced Virtualization qemu-img, qemu-kvm, qemu-kiwi, qemu-kvm-core, qemu-kvm-tests, qemu-kvm-common, +9 more
    affected: no fix available
  • Red Hat OpenStack Platform 10 (Newton) qemu-img-rhev, qemu-kvm-rhev, qemu-kvm-tools-rhev, qemu-kvm-common-rhev Red Hat OpenStack Platform 13 (Queens) qemu-img-rhev, qemu-kvm-rhev, qemu-kvm-tools-rhev, qemu-kvm-common-rhev
    affected: no fix available “Fix deferred”
  • Red Hat OpenStack Platform 14 (Rocky) qemu-img-rhev, qemu-kvm-rhev, qemu-kvm-tools-rhev, qemu-kvm-common-rhev
    affected: no fix planned “Out of support scope”
  • Red Hat Advanced Virtualization CodeReady Builder for RHEL 8.2.1 libnbd 1.2.2-1.module+el8.2.0+5644+32ac38d4, netcf 0.2.8-12.module+el8.2.0+4793+b09dd2fb, hivex 1.3.18-20.module+el8.2.0+5588+63a201c3, nbdfuse 1.2.2-1.module+el8.2.0+5644+32ac38d4, libvirt 6.0.0-25.module+el8.2.1+7154+47ffd890, seabios 1.13.0-2.module+el8.2.1+7284+aa32a2c4, +45 more Red Hat Advanced Virtualization for RHEL 8.2.1 libnbd 1.2.2-1.module+el8.2.0+5644+32ac38d4, netcf 0.2.8-12.module+el8.2.0+4793+b09dd2fb, hivex 1.3.18-20.module+el8.2.0+5588+63a201c3, nbdfuse 1.2.2-1.module+el8.2.0+5644+32ac38d4, nbdkit 1.16.2-4.module+el8.2.1+6710+effcb1df, libvirt 6.0.0-25.module+el8.2.1+7154+47ffd890, +96 more
    fixed: vendor fix RHBA-2020:3172
  • Red Hat CodeReady Linux Builder (v. 8) libnbd 1.2.2-1.module+el8.3.0+7353+9de0a3cc, netcf 0.2.8-12.module+el8.1.0+4066+0f1aadab, hivex 1.3.18-20.module+el8.3.0+6423+e4cb6418, nbdfuse 1.2.2-1.module+el8.3.0+7353+9de0a3cc, libvirt 6.0.0-28.module+el8.3.0+7827+5e65edd7, seabios 1.13.0-2.module+el8.3.0+7353+9de0a3cc, +39 more
    fixed: vendor fix RHSA-2020:4676
show 4 more
  • Red Hat Enterprise Linux 7 Extras slirp4netns 0.3.0-8.el7_7
    fixed: vendor fix RHSA-2020:0889
  • Red Hat Enterprise Linux AppStream (v. 8) udica 0.2.1-2.module+el8.1.1+4975+482d6f5d, conmon 2.0.6-1.module+el8.1.1+5259+bcdd613a, libnbd 1.2.2-1.module+el8.3.0+7353+9de0a3cc, netcf 0.2.8-12.module+el8.1.0+4066+0f1aadab, podman 1.6.4-2.module+el8.1.1+5363+bf8ff1af, hivex 1.3.18-20.module+el8.3.0+6423+e4cb6418, +108 more
    fixed: vendor fix RHSA-2020:0348
  • Red Hat Enterprise Linux Desktop (v. 6) qemu-img 0.12.1.2-2.506.el6_10.6, qemu-kvm 0.12.1.2-2.506.el6_10.6, qemu-kvm-tools 0.12.1.2-2.506.el6_10.6, qemu-guest-agent 0.12.1.2-2.506.el6_10.6 Red Hat Enterprise Linux HPC Node (v. 6) qemu-img 0.12.1.2-2.506.el6_10.6, qemu-kvm 0.12.1.2-2.506.el6_10.6, qemu-kvm-tools 0.12.1.2-2.506.el6_10.6, qemu-guest-agent 0.12.1.2-2.506.el6_10.6 Red Hat Enterprise Linux Server (v. 6) qemu-img 0.12.1.2-2.506.el6_10.6, qemu-kvm 0.12.1.2-2.506.el6_10.6, qemu-kvm-tools 0.12.1.2-2.506.el6_10.6, qemu-guest-agent 0.12.1.2-2.506.el6_10.6 Red Hat Enterprise Linux Workstation (v. 6) qemu-img 0.12.1.2-2.506.el6_10.6, qemu-kvm 0.12.1.2-2.506.el6_10.6, qemu-kvm-tools 0.12.1.2-2.506.el6_10.6, qemu-guest-agent 0.12.1.2-2.506.el6_10.6
    fixed: vendor fix RHSA-2020:0775
  • Red Hat Enterprise Linux 5 xen Red Hat OpenShift Container Platform 4 slirp4netns
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

3.99% chance of exploitation in the next 30 days, higher than 90% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD 2.0 5.0 AV:N/AC:L/Au:N/C:N/I:N/A:P

Classification

Weakness

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.