DEBIAN-CVE-2026-5265

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Source
https://security-tracker.debian.org/tracker/CVE-2026-5265
Import Source
https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-5265.json
JSON Data
https://api.osv.dev/v1/vulns/DEBIAN-CVE-2026-5265
Upstream
  • CVE-2026-5265
Published
2026-04-24T13:16:21Z
Modified
2026-09-14T17:03:18Z
Severity
  • 6.5 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:H CVSS Calculator
Summary
[none]
Details

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

Affected packages

Debian:12 / ovn

Package

Name
ovn
Purl
pkg:deb/debian/ovn?arch=source&distro=bookworm

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

23.*
23.03.0-1
23.03.0-2
23.03.0-3
23.03.1-1~deb12u1
23.03.1-1~deb12u2
23.09.0-1
23.09.0-2
24.*
24.03.0~git20240205.ebb7076-1
24.03.0-1
24.03.1-1
24.03.1-2
24.03.2-1
24.03.2-2
24.09.0-1
25.*
25.03.0~git20250216.7c69af7-1
25.03.0~git20250216.7c69af7-2
25.03.0-1
25.09.0-1
25.09.0-2
25.09.0-3
26.*
26.03.0~git20260216.b543a88-1
26.03.0~git20260216.b543a88-2
26.03.0~git20260216.b543a88-3
26.03.0~git20260216.b543a88-4
26.03.0-1
26.03.0-2
26.03.0-3
26.03.0-4
26.03.0-5
26.03.0-6
26.03.1-1
26.03.2-1
26.09.0~git20260819.c60a7af-1

Ecosystem specific 

{
    "urgency":  "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-5265.json"

Debian:13 / ovn

Package

Name
ovn
Purl
pkg:deb/debian/ovn?arch=source&distro=trixie

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

25.*
25.03.0-1
25.09.0-1
25.09.0-2
25.09.0-3
26.*
26.03.0~git20260216.b543a88-1
26.03.0~git20260216.b543a88-2
26.03.0~git20260216.b543a88-3
26.03.0~git20260216.b543a88-4
26.03.0-1
26.03.0-2
26.03.0-3
26.03.0-4
26.03.0-5
26.03.0-6
26.03.1-1
26.03.2-1
26.09.0~git20260819.c60a7af-1

Ecosystem specific 

{
    "urgency":  "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-5265.json"

Debian:14 / ovn

Package

Name
ovn
Purl
pkg:deb/debian/ovn?arch=source&distro=forky

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
26.03.0-4

Affected versions

25.*
25.03.0-1
25.09.0-1
25.09.0-2
25.09.0-3
26.*
26.03.0~git20260216.b543a88-1
26.03.0~git20260216.b543a88-2
26.03.0~git20260216.b543a88-3
26.03.0~git20260216.b543a88-4
26.03.0-1
26.03.0-2
26.03.0-3

Ecosystem specific 

{
    "urgency":  "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-5265.json"