xfrm: drop ESP-in-TCP packets with no ingress device (Linux Linux)
At a glance
- Source
- NVD
- EPSS
- EPSS 0.19 % · percentile 9 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- Linux
- NVD status
- Received
Description
In the Linux kernel, the following vulnerability has been resolved: xfrm: drop ESP-in-TCP packets with no ingress device ESP-in-TCP receives records through the TCP strparser. handle_esp() restores skb->dev from the saved skb_iif before passing the packet into the XFRM input path. Queued TCP data can be processed after the original ingress device has been removed, for example during veth or net namespace teardown. In that case dev_get_by_index_rcu() returns NULL. The XFRM IPv4 and IPv6 input paths both expect skb->dev to be valid while building the route lookup, so queued ESP-in-TCP data can dereference a NULL device. Drop the packet if the saved ingress device can no longer be resolved. Such a packet can no longer be routed through the normal XFRM receive path, and this preserves the existing behaviour for packets whose ingress device still exists.
References
- https://git.kernel.org/stable/c/239d0f71af09dc2029fd4d730cb24b8c83aaa43a
- https://git.kernel.org/stable/c/f00235f9d12301183d61f75fbe4105506f3e5140
- https://git.kernel.org/stable/c/6af5cdb03819a5ce6e945992635c6c5e91045367
- https://git.kernel.org/stable/c/2dd1609cadff46c4b20ce53b91ab9cce1380456a
- https://git.kernel.org/stable/c/c296d25efbc840be24de83f56d43bc47e714ace9
- https://git.kernel.org/stable/c/328e40aa774b446969c69b654c52a051a95af8a1
- https://git.kernel.org/stable/c/7911e0236616487b89db6bd3ba3f408abd10eb23
- https://git.kernel.org/stable/c/943d95233b8b4a88994e244fcf466f8c403d63f1
- https://git.kernel.org/stable/c/e1d7c5ac1c246ce5775f604515de0a59fbf2116e
European references
- ENISA EUVD · EUVD-2026-71296
- GCVE · GCVE-0-2026-80846
CERT-FR advisories
- CERTFR-2026-AVI-1385 — Multiples vulnérabilités dans les produits VMware · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1372 — Multiples vulnérabilités dans les produits SUSE · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1335 — Multiples vulnérabilités dans le noyau Linux de SUSE · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1289 — Multiples vulnérabilités dans le noyau Linux de Debian LTS · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1253 — Multiples vulnérabilités dans le noyau Linux de Debian · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1163 — Multiples vulnérabilités dans le noyau Linux de Debian LTS · cert.ssi.gouv.fr
Affected products
| Product | Versions |
|---|---|
| Linux · Linux | affected e27cca96cd68fa2c6814c90f9a1cfd36bb68c593 < 239d0f71af09dc2029fd4d730cb24b8c83aaa43a ; affected e27cca96cd68fa2c6814c90f9a1cfd36bb68c593 < f00235f9d12301183d61f75fbe4105506f3e5140 ; affected e27cca96cd68fa2c6814c90f9a1cfd36bb68c593 < 6af5cdb03819a5ce6e945992635c6c5e91045367 ; affected e27cca96cd68fa2c6814c90f9a1cfd36bb68c593 < 2dd1609cadff46c4b20ce53b91ab9cce1380456a ; affected e27cca96cd68fa2c6814c90f9a1cfd36bb68c593 < c296d25efbc840be24de83f56d43bc47e714ace9 ; affected e27cca96cd68fa2c6814c90f9a1cfd36bb68c593 < 328e40aa774b446969c69b654c52a051a95af8a1 |
| Linux · Linux | affected 5.6 ; unaffected 0 < 5.6 ; unaffected 5.10.269 ≤ 5.10.* ; unaffected 5.15.220 ≤ 5.15.* ; unaffected 6.1.187 ≤ 6.1.* ; unaffected 6.6.156 ≤ 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 |