CVE-2026-72253
netfilter: nf_conntrack_sip: validate skb_dst() before accessing it
HIGH 7.5
At a glance
- Source
- NVD
- EPSS
- EPSS 0.70 % · percentile 53 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- Linux
- NVD status
- Received
Description
In the Linux kernel, the following vulnerability has been resolved: netfilter: nf_conntrack_sip: validate skb_dst() before accessing it tc ingress and openvswitch do not guarantee routing information to be available. These subsystems use the conntrack helper infrastructure, and the SIP helper relies on the skb_dst() to be present if sip_external_media is set to 1 (which is disabled by default as a module parameter). This effectively disables the sip_external_media toggle for these subsystems without resulting in a crash.
References
- https://git.kernel.org/stable/c/7866116a040b3a23fb094e7d8f7ea3d61b3ac70b
- https://git.kernel.org/stable/c/c5ef7228be04518d95591fc5369a9c554b19756d
- https://git.kernel.org/stable/c/0aec339694a56e263d4b22475ff7211d40900830
- https://git.kernel.org/stable/c/e64a48c50a1ff565a98c6a98d82b5b942868e76e
- https://git.kernel.org/stable/c/c199ed687c00841daf60e9d131976958583a8c09
- https://git.kernel.org/stable/c/09755dc62b026076b1d47f83489eb0547c8135e0
- https://git.kernel.org/stable/c/b843a96252f672332837ea2ecb7c8db0acf68e20
- https://git.kernel.org/stable/c/e5e24a365a5e024efef63cc49abb345fbd4852c5
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.1 | HIGH 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H | Linux |
| CVSS 3.1 | HIGH 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H | NVD · 416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Secondary) |
European references
- ENISA EUVD · EUVD-2026-59152
- GCVE · GCVE-0-2026-72253
CERT-FR advisories
- CERTFR-2026-AVI-1385 — Multiples vulnérabilités dans les produits VMware · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1333 — Multiples vulnérabilités dans le noyau Linux d'Ubuntu · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1286 — Multiples vulnérabilités dans le noyau Linux d'Ubuntu · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1163 — Multiples vulnérabilités dans le noyau Linux de Debian LTS · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1069 — Multiples vulnérabilités dans le noyau Linux de Debian LTS · cert.ssi.gouv.fr
Affected products
| Product | Versions |
|---|---|
| Linux · Linux | affected cae3a2627520c3795b54533c5328b77af3405dbe < 7866116a040b3a23fb094e7d8f7ea3d61b3ac70b ; affected cae3a2627520c3795b54533c5328b77af3405dbe < c5ef7228be04518d95591fc5369a9c554b19756d ; affected cae3a2627520c3795b54533c5328b77af3405dbe < 0aec339694a56e263d4b22475ff7211d40900830 ; affected cae3a2627520c3795b54533c5328b77af3405dbe < e64a48c50a1ff565a98c6a98d82b5b942868e76e ; affected cae3a2627520c3795b54533c5328b77af3405dbe < c199ed687c00841daf60e9d131976958583a8c09 ; affected cae3a2627520c3795b54533c5328b77af3405dbe < 09755dc62b026076b1d47f83489eb0547c8135e0 |
| Linux · Linux | affected 4.3 ; unaffected 0 < 4.3 ; unaffected 5.10.266 ≤ 5.10.* ; unaffected 5.15.217 ≤ 5.15.* ; unaffected 6.1.184 ≤ 6.1.* ; unaffected 6.6.148 ≤ 6.6.* |
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| CERT-FR (ANSSI) | Licence Ouverte / Etalab 2.0 |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |