๐Ÿ›ก๏ธ CVE-2026-5265
๐ŸŸก CVSS 6.5 โ€” Medium โœ… No Known Exploit CWE-130 NVD
6.5
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

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.

Details

Severity MEDIUM
CVSS Score 6.5
CVSS Vector CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:H
CWE CWE-130
Public Exploit โœ… No
Source NVD
Published 2026-04-24
Updated 2026-06-02
Modified 2026-06-01
Fix URL N/A

Affected Packages

Software From version Fixed in
unknown โ€” โ€”

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