CVE catalog
CVE-2026-115449
libslirp: CVE-2026-115449
- Severity
- Low · CVSS 3.5
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:N/A:N - Published
- Source
- [NVD] · [CVE record]
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.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | libslirp | sid | 4.9.5-1 | vulnerable |
| Debian | libslirp | forky | 4.9.5-1 | vulnerable |
| Debian | libslirp | trixie | 4.8.0-1+deb13u1 | vulnerable |
| Debian | libslirp | bookworm | 4.7.0-1 | vulnerable |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | libslirp | source | sid | (unfixed) | not yet assigned | Not reported | Not reported |
| Debian | libslirp | source | forky | (unfixed) | not yet assigned | Not reported | Not reported |
| Debian | libslirp | source | trixie | (unfixed) | not yet assigned | Not reported | Not reported |
| Debian | libslirp | source | bookworm | (unfixed) | not yet assigned | Not reported | Not reported |
OpenFactory catalog packages
[Debian 12 (Bookworm)]
- [libslirp0]Affected
Source package: [libslirp]
Details (2)
4.7.0-1· amd64 · bookwormAffected
dsa · libslirp · debian · bookworm
4.7.0-1· arm64 · bookwormAffected
dsa · libslirp · debian · bookworm
- [libslirp-dev]Affected
Source package: [libslirp]
Details (2)
4.7.0-1· amd64 · bookwormAffected
dsa · libslirp · debian · bookworm
4.7.0-1· arm64 · bookwormAffected
dsa · libslirp · debian · bookworm
Observed: