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CVE PROGRAM SOURCE RECORD6.5 Medium

CVE-2026-5265

Ovn: ovn: heap over-read in icmp error response generation

Read JSON ↗CVE.org ↗
Status
Published
Published
Updated
Assigning organization
redhat

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.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Red Hat Fast Datapath for Red Hat Enterprise Linux 10

Default version status: affected

  • 0:25.03.2-100.el10fdp to < *unaffected

Red Hat Fast Datapath for Red Hat Enterprise Linux 10

Default version status: affected

  • 0:25.09.2-103.el10fdp to < *unaffected

Red Hat Fast Datapath for Red Hat Enterprise Linux 8

Default version status: affected

  • 0:21.12.0-145.el8fdp to < *unaffected

Red Hat Fast Datapath for Red Hat Enterprise Linux 8

Default version status: affected

  • 0:23.06.4-30.el8fdp to < *unaffected

Red Hat Fast Datapath for Red Hat Enterprise Linux 9

Default version status: affected

  • 0:23.06.4-30.el9fdp to < *unaffected

Red Hat Fast Datapath for Red Hat Enterprise Linux 9

Default version status: affected

  • 0:23.09.6-16.el9fdp to < *unaffected

Red Hat Fast Datapath for Red Hat Enterprise Linux 9

Default version status: affected

  • 0:24.03.7-82.el9fdp to < *unaffected

Red Hat Fast Datapath for Red Hat Enterprise Linux 9

Default version status: affected

  • 0:25.03.2-100.el9fdp to < *unaffected

Red Hat Fast Datapath for Red Hat Enterprise Linux 9

Default version status: affected

  • 0:25.09.2-103.el9fdp to < *unaffected

Red Hat Fast Datapath for RHEL 7

Default version status: affected

Red Hat Fast Datapath for RHEL 7

Default version status: affected

Red Hat Fast Datapath for RHEL 7

Default version status: affected

Red Hat Fast Datapath for RHEL 8

Default version status: affected

Red Hat Fast Datapath for RHEL 8

Default version status: affected

Red Hat Fast Datapath for RHEL 8

Default version status: affected

Red Hat Fast Datapath for RHEL 8

Default version status: affected

Red Hat Fast Datapath for RHEL 8

Default version status: affected

Red Hat Fast Datapath for RHEL 8

Default version status: affected

Red Hat Fast Datapath for RHEL 8

Default version status: affected

Red Hat Fast Datapath for RHEL 8

Default version status: affected

Red Hat Fast Datapath for RHEL 9

Default version status: affected

Red Hat Fast Datapath for RHEL 9

Default version status: affected

Red Hat Fast Datapath for RHEL 9

Default version status: affected

Red Hat Fast Datapath for RHEL 9

Default version status: affected

Red Hat Fast Datapath for RHEL 9

Default version status: affected

Red Hat Fast Datapath for RHEL 9

Default version status: affected

Red Hat Fast Datapath for RHEL 9

Default version status: affected

References