CVE-2026-5265 (GCVE-0-2026-5265)
Vulnerability from cvelistv5
Published
2026-04-24 12:25
Modified
2026-06-01 03:10
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-130 - Improper Handling of Length Parameter Inconsistency
Summary
When generating an ICMP Destination Unreachable or Packet Too Big response, the handler copies a portion of the original packet into the ICMP error body using the IP header's self-declared total length (ip_tot_len for IPv4, ip6_plen for IPv6) without validating it against the actual packet buffer size. A VM can send a short packet with an inflated IP length field that triggers an ICMP error (e.g., by hitting a reject ACL), causing ovn-controller to read heap memory beyond the valid packet data and include it in the ICMP response sent back to the VM.
References
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Impacted products
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| Red Hat | Fast Datapath for Red Hat Enterprise Linux 10 |
Unaffected: 0:25.03.2-100.el10fdp < * cpe:/o:redhat:enterprise_linux:10::fastdatapath |
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
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