CVE-2026-115449: Exposure of Sensitive Information to an Unauthorized Actor in Red Hat Red Hat Enterprise Linux 10
Description
CVE-2026-115449 is a vulnerability in libslirp used by Red Hat Enterprise Linux 10. It involves improper handling of ICMP echo requests where the reply length is not updated correctly, potentially leaking the host's real IP address to a guest system. This breaks the expected NAT isolation in user-mode networking. The vulnerability has a low severity score and does not affect integrity or availability.
CVSS v3.1
Score 3.5low
Affected software
Red Hat
Red Hat Enterprise Linux 10
Red Hat
Red Hat Enterprise Linux 8
Red Hat
Red Hat Enterprise Linux 9
Red Hat
Red Hat OpenShift Container Platform 4
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
A flaw in libslirp's handling of ICMP echo requests causes the reply length to be inconsistent with the actual data received from the host. When the normal ICMP socket is unavailable, this mismatch can leak the host's real IP address to the guest via the echo reply, compromising NAT isolation in user-mode networking on Red Hat Enterprise Linux 10.
Potential Impact
The vulnerability can lead to exposure of the host's real IP address to an unauthorized guest system, breaking NAT isolation. The confidentiality impact is limited to information disclosure of the host IP address. There is no impact on integrity or availability.
Mitigation Recommendations
Patch status is not yet confirmed — check the Red Hat advisory at https://access.redhat.com/security/cve/CVE-2026-115449 for current remediation guidance.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- redhat
- Date Reserved
- 2026-10-22T14:40:34.103Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Vendor Advisory Urls
- [{"url":"https://access.redhat.com/security/cve/CVE-2026-115449","vendor":"Red Hat"}]
Threat ID: 6ada80c74d27ba8daa7e63be
Added to database: 10/22/2026, 21:31:51 UTC
Last enriched: 10/22/2026, 21:45:17 UTC
Last updated: 10/22/2026, 21:46:08 UTC
Views: 5
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