xen/netfront: drop RX packets with a short Ethernet header (Linux Linux)
At a glance
- Source
- NVD
- EPSS
- EPSS 0.22 % · percentile 12 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- Linux
- NVD status
- Received
Description
In the Linux kernel, the following vulnerability has been resolved: xen/netfront: drop RX packets with a short Ethernet header handle_incoming_queue() pulls pull_to bytes into the head before calling eth_type_trans(). pull_to is the length of the first RX slot, capped at RX_COPY_THRESHOLD, and that length comes from the backend. Nothing checks it against ETH_HLEN. If the first slot is shorter than ETH_HLEN and more slots follow, the head ends up shorter than an Ethernet header while skb->len is longer, and eth_type_trans() BUG()s in __skb_pull(). If the whole packet is shorter than ETH_HLEN, eth_type_trans() reads the header past the end of the data instead. Pull at least ETH_HLEN, and drop the packet if that fails, which also drops packets too short to hold an Ethernet header. This also checks the return value of the pull, which was ignored.
References
- https://git.kernel.org/stable/c/fd5481dd75ea879c53c17882cbb065ad3bd6b766
- https://git.kernel.org/stable/c/9cb8813d157b4d15103d3b34c635620f36df4173
- https://git.kernel.org/stable/c/57508819da8dc1cf5a2c3b64570aa02cc5ae28b6
- https://git.kernel.org/stable/c/0542d213253eec18785a24b603b28bd385dfe4a5
- https://git.kernel.org/stable/c/236a17caebcff31f75bec5ff4136bde2de944e40
- https://git.kernel.org/stable/c/72d2f54367895d6e236b9857892e2e6b6036e067
- https://git.kernel.org/stable/c/e2b721bc30f40ffa7ccc36a56d4e8990b8c0538e
- https://git.kernel.org/stable/c/089e58805c452e52179482b1025a8e309a57f801
- http://xenbits.xen.org/xsa/advisory-522.html
- http://www.openwall.com/lists/oss-security/2026/10/09/3
European references
- ENISA EUVD · EUVD-2026-95525
- GCVE · GCVE-0-2026-98375
CERT-FR advisories
- CERTFR-2026-AVI-1375 — Multiples vulnérabilités dans le noyau Linux de Debian LTS · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1374 — Multiples vulnérabilités dans le noyau Linux de Debian · cert.ssi.gouv.fr
Affected products
| Product | Versions |
|---|---|
| Linux · Linux | affected 0d160211965b79de989cf2d170985abeb8da5ec6 < fd5481dd75ea879c53c17882cbb065ad3bd6b766 ; affected 0d160211965b79de989cf2d170985abeb8da5ec6 < 9cb8813d157b4d15103d3b34c635620f36df4173 ; affected 0d160211965b79de989cf2d170985abeb8da5ec6 < 57508819da8dc1cf5a2c3b64570aa02cc5ae28b6 ; affected 0d160211965b79de989cf2d170985abeb8da5ec6 < 0542d213253eec18785a24b603b28bd385dfe4a5 ; affected 0d160211965b79de989cf2d170985abeb8da5ec6 < 236a17caebcff31f75bec5ff4136bde2de944e40 ; affected 0d160211965b79de989cf2d170985abeb8da5ec6 < 72d2f54367895d6e236b9857892e2e6b6036e067 |
| Linux · Linux | affected 2.6.23 ; unaffected 0 < 2.6.23 ; unaffected 5.10.273 ≤ 5.10.* ; unaffected 5.15.224 ≤ 5.15.* ; unaffected 6.1.191 ≤ 6.1.* ; unaffected 6.6.160 ≤ 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 |