CVE-2019-15890: libslirp_project libslirp Use After Free
Vulnerability summary
CVE-2019-15890 is a high (CVSS 7.5) Use After Free vulnerability in libslirp_project libslirp. EPSS estimates a 3.99% chance of exploitation in the next 30 days, higher than 90.5% of scored vulnerabilities.
Severe, CVSS 7.5 (NVD); no exploitation reported by the 5 checked sources; EPSS 4% (FIRST, 03-11-2026)
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 33 · Related 26Timeline
- 06-09-2019PublishedVulnerability first disclosed.
- 05-08-2024Last modifiedVulnerability information updated.
Description
libslirp 4.0.0, as used in QEMU 4.1.0, has a use-after-free in ip_reass in ip_input.c.
CVSS metrics
4 scores · 3 sources · 2 versions- OSV · UbuntuEcosystem advisory · calculated7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- OSV · DebianEcosystem advisory · calculated7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS trend
Probability
3.99%
Chance of exploitation in the next 30 days
Percentile
91%
Versus all other CVEs
30-day change
No change 0.00 pp
From 3.99% on 04-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Known conditions: network-reachable, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.
Ubuntu11 products
- androidAll versions (No fix recorded)
- basilisk2All versions (No fix recorded)
- bochsAll versions (No fix recorded)
- fs-uaeAll versions (No fix recorded)
- ns3All versions (No fix recorded)
Debian2 products
- qemu< 1:4.1-2
- slirp4netns< 0.4.1-1
Libslirp_project1 product
- libslirp4.0.0
Qemu1 product
- qemu4.1.0
4 vendors · 15 products
References
15 links- www.openwall.com/lists/oss-security/2019/09/06/3X Refsource CONFIRMMailing ListPatchThird Party AdvisoryREPORT
