CVE catalog
CVE-2026-5265
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 lengt
- Severity
- High · CVSS 7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 0.63% · Oct 25, 2026
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.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | ovn | sid | 26.03.1-1 | fixed |
| Debian | ovn | trixie | 25.03.0-1 | vulnerable |
| Debian | ovn | bookworm | 23.03.1-1~deb12u2 | vulnerable |
| Cpe | ovn | Not reported | Not reported | vulnerable |
| Suse | openvswitch | linux enterprise high performance computing 15 sp4-espos | 2.14.2-150400.24.35.1 | fixed |
| Suse | openvswitch | linux enterprise high performance computing 15 sp4-ltss | 2.14.2-150400.24.35.1 | fixed |
| Suse | openvswitch | linux enterprise server 15 sp4-ltss | 2.14.2-150400.24.35.1 | fixed |
| Suse | openvswitch | linux enterprise server 15 sp5-ltss | 2.14.2-150400.24.35.1 | fixed |
| Suse | openvswitch | linux enterprise server for sap applications 15 sp4 | 2.14.2-150400.24.35.1 | fixed |
| Suse | openvswitch | linux enterprise server for sap applications 15 sp5 | 2.14.2-150400.24.35.1 | fixed |
| Suse | openvswitch | linux enterprise server 15 sp6-ltss | 3.1.7-150600.33.15.1 | fixed |
| Suse | openvswitch | linux enterprise server for sap applications 15 sp6 | 3.1.7-150600.33.15.1 | fixed |
| Suse | openvswitch3 | linux enterprise micro 5.5 | 3.1.7-150500.3.31.1 | fixed |
| Suse | openvswitch3 | linux enterprise high performance computing 15 sp5-espos | 3.1.7-150500.3.31.1 | fixed |
| Suse | openvswitch3 | linux enterprise high performance computing 15 sp5-ltss | 3.1.7-150500.3.31.1 | fixed |
| Suse | openvswitch3 | linux enterprise server 15 sp5-ltss | 3.1.7-150500.3.31.1 | fixed |
| Suse | openvswitch3 | linux enterprise server for sap applications 15 sp5 | 3.1.7-150500.3.31.1 | fixed |
| Suse | openvswitch | linux enterprise module for package hub 15 sp7 | 3.5.4-150700.41.18.1 | fixed |
| Suse | openvswitch | linux enterprise module for server applications 15 sp7 | 3.5.4-150700.41.18.1 | fixed |
| Suse | openvswitch | linux micro 6.0 | 3.1.7-6.1 | fixed |
| Opensuse | openvswitch | tumbleweed | 3.7.1-34.1 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | ovn | source | sid | 26.03.0-4 | not yet assigned | Not reported | [1134486] |
| Debian | ovn | source | trixie | (unfixed) | not yet assigned | Not reported | [1134486] |
| Debian | ovn | source | bookworm | (unfixed) | not yet assigned | Not reported | [1134486] |
| Suse | openvswitch | rpm | linux enterprise high performance computing 15 sp4-espos | 2.14.2-150400.24.35.1 | Not reported | SUSE-SU-2026:2481-1 | Not reported |
| Suse | openvswitch | rpm | linux enterprise high performance computing 15 sp4-ltss | 2.14.2-150400.24.35.1 | Not reported | SUSE-SU-2026:2481-1 | Not reported |
| Suse | openvswitch | rpm | linux enterprise server 15 sp4-ltss | 2.14.2-150400.24.35.1 | Not reported | SUSE-SU-2026:2481-1 | Not reported |
| Suse | openvswitch | rpm | linux enterprise server 15 sp5-ltss | 2.14.2-150400.24.35.1 | Not reported | SUSE-SU-2026:2481-1 | Not reported |
| Suse | openvswitch | rpm | linux enterprise server for sap applications 15 sp4 | 2.14.2-150400.24.35.1 | Not reported | SUSE-SU-2026:2481-1 | Not reported |
| Suse | openvswitch | rpm | linux enterprise server for sap applications 15 sp5 | 2.14.2-150400.24.35.1 | Not reported | SUSE-SU-2026:2481-1 | Not reported |
| Suse | openvswitch | rpm | linux enterprise server 15 sp6-ltss | 3.1.7-150600.33.15.1 | Not reported | SUSE-SU-2026:2475-1 | Not reported |
| Suse | openvswitch | rpm | linux enterprise server for sap applications 15 sp6 | 3.1.7-150600.33.15.1 | Not reported | SUSE-SU-2026:2475-1 | Not reported |
| Suse | openvswitch3 | rpm | linux enterprise micro 5.5 | 3.1.7-150500.3.31.1 | Not reported | SUSE-SU-2026:2476-1 | Not reported |
| Suse | openvswitch3 | rpm | linux enterprise high performance computing 15 sp5-espos | 3.1.7-150500.3.31.1 | Not reported | SUSE-SU-2026:2476-1 | Not reported |
| Suse | openvswitch3 | rpm | linux enterprise high performance computing 15 sp5-ltss | 3.1.7-150500.3.31.1 | Not reported | SUSE-SU-2026:2476-1 | Not reported |
| Suse | openvswitch3 | rpm | linux enterprise server 15 sp5-ltss | 3.1.7-150500.3.31.1 | Not reported | SUSE-SU-2026:2476-1 | Not reported |
| Suse | openvswitch3 | rpm | linux enterprise server for sap applications 15 sp5 | 3.1.7-150500.3.31.1 | Not reported | SUSE-SU-2026:2476-1 | Not reported |
| Suse | openvswitch | rpm | linux enterprise module for package hub 15 sp7 | 3.5.4-150700.41.18.1 | Not reported | SUSE-SU-2026:2463-1 | Not reported |
| Suse | openvswitch | rpm | linux enterprise module for server applications 15 sp7 | 3.5.4-150700.41.18.1 | Not reported | SUSE-SU-2026:2463-1 | Not reported |
| Suse | openvswitch | rpm | linux micro 6.0 | 3.1.7-6.1 | Not reported | SUSE-SU-2026:22105-1 | Not reported |
| Opensuse | openvswitch | rpm | tumbleweed | 3.7.1-34.1 | Not reported | OPENSUSE-SU-2026:10956-1 | Not reported |
Notes
[trixie] ovn: Minor issue [bookworm] ovn: Minor issue; bounded heap over-read in pinctrl ICMP error generation
OpenFactory catalog packages
[Debian 12 (Bookworm)]
- [ovn-central]Affected
Source package: [ovn]
Details (2)
23.03.1-1~deb12u2· amd64 · bookwormAffected
nvd · ovn · debian · bookworm; nvd · ovn · debian · 12
23.03.1-1~deb12u2· arm64 · bookwormAffected
nvd · ovn · debian · bookworm; nvd · ovn · debian · 12
- [ovn-common]Affected
Source package: [ovn]
Details (2)
23.03.1-1~deb12u2· amd64 · bookwormAffected
nvd · ovn · debian · bookworm; nvd · ovn · debian · 12
23.03.1-1~deb12u2· arm64 · bookwormAffected
nvd · ovn · debian · bookworm; nvd · ovn · debian · 12
- [ovn-controller-vtep]Affected
Source package: [ovn]
Details (2)
23.03.1-1~deb12u2· amd64 · bookwormAffected
nvd · ovn · debian · bookworm; nvd · ovn · debian · 12
23.03.1-1~deb12u2· arm64 · bookwormAffected
nvd · ovn · debian · bookworm; nvd · ovn · debian · 12
- [ovn-doc]Affected
Source package: [ovn]
Details (2)
23.03.1-1~deb12u2· all · bookwormAffected
nvd · ovn · debian · bookworm; nvd · ovn · debian · 12
23.03.1-1~deb12u2· all · bookwormAffected
nvd · ovn · debian · bookworm; nvd · ovn · debian · 12
- [ovn-docker]Affected
Source package: [ovn]
Details (2)
23.03.1-1~deb12u2· amd64 · bookwormAffected
nvd · ovn · debian · bookworm; nvd · ovn · debian · 12
23.03.1-1~deb12u2· arm64 · bookwormAffected
nvd · ovn · debian · bookworm; nvd · ovn · debian · 12
- [ovn-host]Affected
Source package: [ovn]
Details (2)
23.03.1-1~deb12u2· amd64 · bookwormAffected
nvd · ovn · debian · bookworm; nvd · ovn · debian · 12
23.03.1-1~deb12u2· arm64 · bookwormAffected
nvd · ovn · debian · bookworm; nvd · ovn · debian · 12
- [ovn-ic]Affected
Source package: [ovn]
Details (2)
23.03.1-1~deb12u2· amd64 · bookwormAffected
nvd · ovn · debian · bookworm; nvd · ovn · debian · 12
23.03.1-1~deb12u2· arm64 · bookwormAffected
nvd · ovn · debian · bookworm; nvd · ovn · debian · 12
- [ovn-ic-db]Affected
Source package: [ovn]
Details (2)
23.03.1-1~deb12u2· amd64 · bookwormAffected
nvd · ovn · debian · bookworm; nvd · ovn · debian · 12
23.03.1-1~deb12u2· arm64 · bookwormAffected
nvd · ovn · debian · bookworm; nvd · ovn · debian · 12
[Debian 13 (Trixie)]
- [ovn-central]Affected
Source package: [ovn]
Details (2)
25.03.0-1· amd64 · trixieAffected
nvd · ovn · debian · 13
25.03.0-1· arm64 · trixieAffected
nvd · ovn · debian · 13
- [ovn-common]Affected
Source package: [ovn]
Details (2)
25.03.0-1· amd64 · trixieAffected
nvd · ovn · debian · 13
25.03.0-1· arm64 · trixieAffected
nvd · ovn · debian · 13
- [ovn-controller-vtep]Affected
Source package: [ovn]
Details (2)
25.03.0-1· amd64 · trixieAffected
nvd · ovn · debian · 13
25.03.0-1· arm64 · trixieAffected
nvd · ovn · debian · 13
- [ovn-doc]Affected
Source package: [ovn]
Details (2)
25.03.0-1· all · trixieAffected
nvd · ovn · debian · 13
25.03.0-1· all · trixieAffected
nvd · ovn · debian · 13
- [ovn-docker]Affected
Source package: [ovn]
Details (2)
25.03.0-1· amd64 · trixieAffected
nvd · ovn · debian · 13
25.03.0-1· arm64 · trixieAffected
nvd · ovn · debian · 13
- [ovn-host]Affected
Source package: [ovn]
Details (2)
25.03.0-1· amd64 · trixieAffected
nvd · ovn · debian · 13
25.03.0-1· arm64 · trixieAffected
nvd · ovn · debian · 13
- [ovn-ic]Affected
Source package: [ovn]
Details (2)
25.03.0-1· amd64 · trixieAffected
nvd · ovn · debian · 13
25.03.0-1· arm64 · trixieAffected
nvd · ovn · debian · 13
- [ovn-ic-db]Affected
Source package: [ovn]
Details (2)
25.03.0-1· amd64 · trixieAffected
nvd · ovn · debian · 13
25.03.0-1· arm64 · trixieAffected
nvd · ovn · debian · 13
[openSUSE Tumbleweed]
- [libopenvswitch-3_7-0]Unknown
Source package: [openvswitch]
Details (1)
3.7.1-36.1· x86_64 · tumbleweedUnknown · Fixed:
3.7.1-34.1Version impact unknown
nvd · openvswitch · opensuse · tumbleweed
- [libovn-26_03-0]Unknown
Source package: [openvswitch]
Details (1)
26.03.2-36.1· x86_64 · tumbleweedUnknown · Fixed:
3.7.1-34.1Version impact unknown
nvd · openvswitch · opensuse · tumbleweed
- [openvswitch-devel]Unknown
Source package: [openvswitch]
Details (1)
3.7.1-36.1· x86_64 · tumbleweedUnknown · Fixed:
3.7.1-34.1Version impact unknown
nvd · openvswitch · opensuse · tumbleweed
- [openvswitch-doc]Unknown
Source package: [openvswitch]
Details (1)
3.7.1-36.1· noarch · tumbleweedUnknown · Fixed:
3.7.1-34.1Version impact unknown
nvd · openvswitch · opensuse · tumbleweed
Observed:
References
- [http://www.openwall.com/lists/oss-security/2026/04/20/2]
- [http://www.openwall.com/lists/oss-security/2026/04/20/4]
- [https://access.redhat.com/errata/RHSA-2026:11694]
- [https://access.redhat.com/errata/RHSA-2026:11695]
- [https://access.redhat.com/errata/RHSA-2026:11696]
- [https://access.redhat.com/errata/RHSA-2026:11698]
- [https://access.redhat.com/errata/RHSA-2026:11700]
- [https://access.redhat.com/errata/RHSA-2026:11701]
- [https://access.redhat.com/errata/RHSA-2026:11702]
- [https://access.redhat.com/errata/RHSA-2026:22110]
- [https://access.redhat.com/errata/RHSA-2026:22111]
- [https://access.redhat.com/security/cve/CVE-2026-5265]
- [https://bugzilla.redhat.com/show_bug.cgi?id=2453458]
- [https://ftp.suse.com/pub/projects/security/csaf/suse-su-2026_23188-1.json]
- [https://nvd.nist.gov/vuln/detail/CVE-2026-5265]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2026-5265]
- [https://osv.dev/vulnerability/SUSE-SU-2026:22105-1]
- [https://osv.dev/vulnerability/SUSE-SU-2026:2463-1]
- [https://osv.dev/vulnerability/SUSE-SU-2026:2475-1]
- [https://osv.dev/vulnerability/SUSE-SU-2026:2476-1]
- [https://osv.dev/vulnerability/SUSE-SU-2026:2481-1]
- [https://osv.dev/vulnerability/openSUSE-SU-2026:10956-1]
- [https://security-tracker.debian.org/tracker/CVE-2026-5265]
- [https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-5265.json]
- [https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-1315.json]
[CERT-Bund public advisories] · [Debian Security Tracker] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX]