3.5
Low
CVE-2026-115449 Libslirp: libslirp: icmp echo reply length desynchronization leaks host ip to guest
Description
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.
CVSS 3.1 detail
Vector CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:N/A:NExploitable remotely over the network, with an ordinary account and without any user action; the impact on data or service is limited.
- Attack vector
- Network
- Attack complexity
- High
- Privileges required
- Low
- Interaction
- None
- Scope
- Changed
- Confidentiality
- Low
- Integrity
- None
- Availability
- None
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| Red Hat Enterprise Linux 10 | Versions not published | |
| Red Hat Enterprise Linux 8 | Versions not published | |
| Red Hat Enterprise Linux 9 | Versions not published | |
| Red Hat OpenShift Container Platform 4 | Versions not published |
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Not rated