CVE-2026-115449 (GCVE-0-2026-115449)

Vulnerability from cvelistv5 – Published: 2026-10-22 21:20 – Updated: 2026-10-23 15:00
VLAI
Title
Libslirp: libslirp: icmp echo reply length desynchronization leaks host ip to guest
Summary
A flaw was found in libslirp. When handling ICMP echo requests, the reply length is not updated to match the actual data received from the host. Under specific conditions where the normal ICMP socket is unavailable, this length mismatch causes the host's real IP address to be leaked to the guest in the echo reply, breaking the NAT isolation that user-mode networking is expected to provide.
Severity
3.5 (Low)
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:N/A:N
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-23 14:48 UTC
CWE
  • CWE-200 - Exposure of Sensitive Information to an Unauthorized Actor
Assigner
redhat CNA under the redhat root
CNA scorecard B 82/100 over 1069 records in the last 180 days details
References
URL Tags
https://access.redhat.com/security/cve/CVE-2026-115449 vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2558916 issue-trackingx_refsource_REDHAT
Impacted products
Date Public
2026-10-22 00:00
Credits
Red Hat would like to thank Piyusha Akash for reporting this issue.
Show details on NVD website
To clipboard 

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