CVE-2026-98237net: wwan: mhi_wwan_mbim: guard against a cyclic NDP chain
- —Not scoredno CVSS score yet
- 0.17%Exploitation in 30 daysEPSS · top 93% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
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.
Timeline
ID reserved
By Linux
- 11 days later
· 11 days later
Published
- 13 days later
· 13 days later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
No CVSS score yet: neither the CNA, CISA nor NVD has scored this CVE. NVD status: Received.
- EPSS (exploitation in 30 days)
- 0.17% · top 93% of all CVEs (14 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: Not scored.
Affected products
- affected aa730a9905b7b079ef2fffdab7f15dbb842f5c7c – < 3ed36ee1b29b028f6bc2ebe100152f61a33df05a
- affected aa730a9905b7b079ef2fffdab7f15dbb842f5c7c – < e4b2c7b50d4f4aa1ddfff731b136d65f65b2b526
- affected aa730a9905b7b079ef2fffdab7f15dbb842f5c7c – < 19b5e8dd884a530d04482e1a8e547f43cad17ed7
- affected aa730a9905b7b079ef2fffdab7f15dbb842f5c7c – < 24ade82d6d993274e99c2c6998848751c35292e7
- affected aa730a9905b7b079ef2fffdab7f15dbb842f5c7c – < 8dad70ff7e25cbcfbcb5101fdbf36d98003eb653
- affected aa730a9905b7b079ef2fffdab7f15dbb842f5c7c – < 829fec45122da58d77a55a3b7ca514dafab98e77
- affected aa730a9905b7b079ef2fffdab7f15dbb842f5c7c – < 5d063822ac5184939c1ed377a339a01d8ae814e8
- affected 5.15
- unaffected < 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.*
- unaffected 6.18.54 – ≤ 6.18.*
- unaffected 7.2.8 – ≤ 7.2.*
- unaffected 7.3 – ≤ *
References
References7
- https://git.kernel.org/stable/c/3ed36ee1b29b028f6bc2ebe100152f61a33df05a (opens in a new tab)
- https://git.kernel.org/stable/c/e4b2c7b50d4f4aa1ddfff731b136d65f65b2b526 (opens in a new tab)
- https://git.kernel.org/stable/c/19b5e8dd884a530d04482e1a8e547f43cad17ed7 (opens in a new tab)
- https://git.kernel.org/stable/c/24ade82d6d993274e99c2c6998848751c35292e7 (opens in a new tab)
- https://git.kernel.org/stable/c/8dad70ff7e25cbcfbcb5101fdbf36d98003eb653 (opens in a new tab)
- https://git.kernel.org/stable/c/829fec45122da58d77a55a3b7ca514dafab98e77 (opens in a new tab)
- https://git.kernel.org/stable/c/5d063822ac5184939c1ed377a339a01d8ae814e8 (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2026-93165 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2026-98237)Record last updated .