libslirp 4.0.0, as used in QEMU 4.1.0, has a use-after-free in ip_reass in ip_input.c.
Priority MEDIUM 40CWE-416Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- Partial Red Hat: 9 fixed, 7 without a fix
Attack profile from CVSS 3.1 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-416 and the CVSS impact.
Summary
libslirp 4.0.0, as used in QEMU 4.1.0, has a use-after-free in ip_reass in ip_input.c.
Why it matters now
EPSS 0.03994 90th percentileScored 2026-11-07
Fix Partial Red Hat: 4 advisoriesRed Hat: 9 fixed, 7 without a fix
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 2
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:libslirp_project:libslirp:4.0.0:-:*:*:*:*:*:* | 4.0.0 | Vulnerable | Libslirp Project |
| cpe:2.3:a:qemu:qemu:4.1.0:*:*:*:*:*:*:* | 4.1.0 | Vulnerable | QEMU |
- cpe:2.3:a:libslirp_project:libslirp:4.0.0:-:*:*:*:*:*:* Versions 4.0.0 Vulnerable ·Libslirp Project
- cpe:2.3:a:qemu:qemu:4.1.0:*:*:*:*:*:*:* Versions 4.1.0 Vulnerable ·QEMU
Remediation
Red Hat 4 advisories
- RHSA-2020:4676 Released 2020-11-04 · Red Hat rating Moderatevirt:rhel and virt-devel:rhel security, bug fix, and enhancement update
- Red Hat CodeReady Linux Builder (v. 8) SLOF-20191022-3.git899d9883.module+el8.3.0+6423+e4cb6418.src::virt-devel:rhel, hivex-1.3.18-20.module+el8.3.0+6423+e4cb6418.i686::virt-devel:rhel, hivex-devel-1.3.18-20.module+el8.3.0+6423+e4cb6418.i686::virt-devel:rhel +47
- Red Hat Enterprise Linux AppStream (v. 8) SLOF-20191022-3.git899d9883.module+el8.3.0+6423+e4cb6418.noarch::virt:rhel, SLOF-20191022-3.git899d9883.module+el8.3.0+6423+e4cb6418.src::virt:rhel, hivex-1.3.18-20.module+el8.3.0+6423+e4cb6418.aarch64::virt:rhel +47
- RHSA-2020:0889 Released 2020-03-17 · Red Hat rating Importantslirp4netns security update
- Red Hat Enterprise Linux 7 Extras slirp4netns-0.3.0-8.el7_7
- RHSA-2020:0775 Released 2020-03-10 · Red Hat rating Importantqemu-kvm security update
- Red Hat Enterprise Linux Desktop (v. 6) qemu-guest-agent-2:0.12.1.2-2.506.el6_10.6, qemu-img-2:0.12.1.2-2.506.el6_10.6, qemu-kvm-2:0.12.1.2-2.506.el6_10.6 +1
- Red Hat Enterprise Linux HPC Node (v. 6) qemu-guest-agent-2:0.12.1.2-2.506.el6_10.6, qemu-img-2:0.12.1.2-2.506.el6_10.6, qemu-kvm-2:0.12.1.2-2.506.el6_10.6 +1
- Red Hat Enterprise Linux Server (v. 6) qemu-guest-agent-2:0.12.1.2-2.506.el6_10.6, qemu-img-2:0.12.1.2-2.506.el6_10.6, qemu-kvm-2:0.12.1.2-2.506.el6_10.6 +1
- Red Hat Enterprise Linux Workstation (v. 6) qemu-guest-agent-2:0.12.1.2-2.506.el6_10.6, qemu-img-2:0.12.1.2-2.506.el6_10.6, qemu-kvm-2:0.12.1.2-2.506.el6_10.6 +1
Show 1 more Red Hat advisories
- RHSA-2020:0348 Released 2020-02-04 · Red Hat rating Importantcontainer-tools:rhel8 security, bug fix, and enhancement update
- Red Hat Enterprise Linux AppStream (v. 8) buildah-1.11.6-4.module+el8.1.1+5259+bcdd613a.aarch64::container-tools:rhel8, buildah-1.11.6-4.module+el8.1.1+5259+bcdd613a.ppc64le::container-tools:rhel8, buildah-1.11.6-4.module+el8.1.1+5259+bcdd613a.s390x::container-tools:rhel8 +47
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux 5 | Affected | No fix planned: Out of support scope |
| Red Hat Enterprise Linux 7 | Affected | No fix planned: Will not fix |
| Red Hat Enterprise Linux 8 | Affected | No fix planned: Out of support scope |
| Red Hat Enterprise Linux 8 Advanced Virtualization | Affected | No fix yet |
| Red Hat OpenStack Platform 10 (Newton) | Affected | No fix yet: Fix deferred |
| Red Hat OpenStack Platform 13 (Queens) | Affected | No fix yet: Fix deferred |
| Red Hat OpenStack Platform 14 (Rocky) | Affected | No fix planned: Out of support scope |
| Advanced Virtualization CodeReady Builder for RHEL 8.2.1 | Fixed | — |
| Advanced Virtualization for RHEL 8.2.1 | Fixed | — |
| Red Hat CodeReady Linux Builder (v. 8) | Fixed | RHSA-2020:4676 |
| Red Hat Enterprise Linux 7 Extras | Fixed | RHSA-2020:0889 |
| Red Hat Enterprise Linux AppStream (v. 8) | Fixed | RHSA-2020:0348, RHSA-2020:4676 |
| Red Hat Enterprise Linux Desktop (v. 6) | Fixed | RHSA-2020:0775 |
| Red Hat Enterprise Linux HPC Node (v. 6) | Fixed | RHSA-2020:0775 |
| Red Hat Enterprise Linux Server (v. 6) | Fixed | RHSA-2020:0775 |
| Red Hat Enterprise Linux Workstation (v. 6) | Fixed | RHSA-2020:0775 |
Not affected: 2 products
- Red Hat Enterprise Linux 5
- Red Hat OpenShift Container Platform 4
Timeline
- 2026-10-02 Threatist record created from CVE-2019-15890
- 2026-10-03 Alias added: GHSA-2237-w692-94pv
References
Patch 2
Sources
- CVE-2019-15890 · CVE Program
- CVE-2019-15890 · NVD
- FIRST EPSS
- GHSA-2237-w692-94pv · GitHub Advisory Database · CC BY 4.0
- CVE-2019-15890 · Red Hat security data · CC BY 4.0
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