net: wwan: mhi_wwan_mbim: guard against a cyclic NDP chain (Linux Linux)
At a glance
- Source
- NVD
- EPSS
- EPSS 0.17 % · percentile 7 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- Linux
- NVD status
- Received
Description
In the Linux kernel, the following vulnerability has been resolved: net: wwan: mhi_wwan_mbim: guard against a cyclic NDP chain The NDP traversal in mhi_mbim_rx() only stops when wNextNdpIndex is zero. Nothing requires the offsets to advance, so a modem that points an NDP at itself, or at an earlier NDP, keeps the loop spinning forever on one CPU. Break out when the next NDP offset is not larger than the current one. Verified in a QEMU guest with a fault injector feeding the driver's receive callback an NTB whose single NDP points at itself: the unpatched driver spins in mhi_mbim_rx() with one CPU pinned at 100% and the thread never returns. With this check the loop terminates within one iteration. Changes in v2: move the non-increasing check to the wNextNdpIndex retrieval site, as suggested by Loic Poulain, instead of tracking the previous offset in a separate variable.
References
- https://git.kernel.org/stable/c/3ed36ee1b29b028f6bc2ebe100152f61a33df05a
- https://git.kernel.org/stable/c/e4b2c7b50d4f4aa1ddfff731b136d65f65b2b526
- https://git.kernel.org/stable/c/19b5e8dd884a530d04482e1a8e547f43cad17ed7
- https://git.kernel.org/stable/c/24ade82d6d993274e99c2c6998848751c35292e7
- https://git.kernel.org/stable/c/8dad70ff7e25cbcfbcb5101fdbf36d98003eb653
- https://git.kernel.org/stable/c/829fec45122da58d77a55a3b7ca514dafab98e77
- https://git.kernel.org/stable/c/5d063822ac5184939c1ed377a339a01d8ae814e8
European references
- ENISA EUVD · EUVD-2026-93165
- GCVE · GCVE-0-2026-98237
CERT-FR advisories
- CERTFR-2026-AVI-1385 — Multiples vulnérabilités dans les produits VMware · cert.ssi.gouv.fr
- 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 aa730a9905b7b079ef2fffdab7f15dbb842f5c7c < 3ed36ee1b29b028f6bc2ebe100152f61a33df05a ; affected aa730a9905b7b079ef2fffdab7f15dbb842f5c7c < e4b2c7b50d4f4aa1ddfff731b136d65f65b2b526 ; affected aa730a9905b7b079ef2fffdab7f15dbb842f5c7c < 19b5e8dd884a530d04482e1a8e547f43cad17ed7 ; affected aa730a9905b7b079ef2fffdab7f15dbb842f5c7c < 24ade82d6d993274e99c2c6998848751c35292e7 ; affected aa730a9905b7b079ef2fffdab7f15dbb842f5c7c < 8dad70ff7e25cbcfbcb5101fdbf36d98003eb653 ; affected aa730a9905b7b079ef2fffdab7f15dbb842f5c7c < 829fec45122da58d77a55a3b7ca514dafab98e77 |
| Linux · Linux | affected 5.15 ; unaffected 0 < 5.15 ; unaffected 5.15.222 ≤ 5.15.* ; unaffected 6.1.189 ≤ 6.1.* ; unaffected 6.6.158 ≤ 6.6.* ; unaffected 6.12.112 ≤ 6.12.* |
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 |