CVE-2026-74679usb: gadget: f_ncm: Use unsigned int for ndp_index
- —Not scoredno CVSS score yet
- 0.18%Exploitation in 30 daysEPSS · top 92% 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: usb: gadget: f_ncm: Use unsigned int for ndp_index The variable ndp_index is declared as a signed integer, but it stores the return value of get_ncm(), which is unsigned. A malicious host can supply a large offset that overflows the signed ndp_index, making it negative. Because ndp_index is compared against unsigned bounds, this negative value bypasses sanity checks and leads to an out-of-bounds read when calculating the address of the NDP block (ntb_ptr + ndp_index). Fix this by changing ndp_index to unsigned int to ensure consistent unsigned comparisons throughout the function.
Timeline
ID reserved
By Linux
- 7 days later
· 7 days later
Published
- 3 months later
· 3 months 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)
- 0.18% · top 92% of all CVEs (14 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: Not scored.
Affected products
- affected 370af734dfaf8336b496b386e194648e097e248a – < 9c8c6825a750fcd3efbe922847ca70ccd5a66857
- affected 370af734dfaf8336b496b386e194648e097e248a – < a1c0deeba4a46481543d6b09c665f758c54c3a1a
- affected 370af734dfaf8336b496b386e194648e097e248a – < d13f650a3485b58c124b3cda45597e8002c9c833
- affected 370af734dfaf8336b496b386e194648e097e248a – < 11413d7ed42174b8f5d8d0b6a25d10dc88239b21
- affected 370af734dfaf8336b496b386e194648e097e248a – < 5b2b3a3229a3f4c493ffdee53aee2f173b6f13b3
- affected 370af734dfaf8336b496b386e194648e097e248a – < d328fdc607fa1bb668ad512e1c918a120f78f337
- affected 370af734dfaf8336b496b386e194648e097e248a – < fc9e54e22845c4da29588ca0986cb7c795b5a262
- affected 370af734dfaf8336b496b386e194648e097e248a – < 6b1c8a9403a26cb0fed7a648916c74dc236da591
- affected 3.17
- unaffected < 3.17
- unaffected 5.10.265 – ≤ 5.10.*
- unaffected 5.15.216 – ≤ 5.15.*
- unaffected 6.1.183 – ≤ 6.1.*
- unaffected 6.6.152 – ≤ 6.6.*
- unaffected 6.12.104 – ≤ 6.12.*
- unaffected 6.18.45 – ≤ 6.18.*
- unaffected 7.1.9 – ≤ 7.1.*
- unaffected 7.2 – ≤ *
References
References8
- https://git.kernel.org/stable/c/9c8c6825a750fcd3efbe922847ca70ccd5a66857 (opens in a new tab)
- https://git.kernel.org/stable/c/a1c0deeba4a46481543d6b09c665f758c54c3a1a (opens in a new tab)
- https://git.kernel.org/stable/c/d13f650a3485b58c124b3cda45597e8002c9c833 (opens in a new tab)
- https://git.kernel.org/stable/c/11413d7ed42174b8f5d8d0b6a25d10dc88239b21 (opens in a new tab)
- https://git.kernel.org/stable/c/5b2b3a3229a3f4c493ffdee53aee2f173b6f13b3 (opens in a new tab)
- https://git.kernel.org/stable/c/d328fdc607fa1bb668ad512e1c918a120f78f337 (opens in a new tab)
- https://git.kernel.org/stable/c/fc9e54e22845c4da29588ca0986cb7c795b5a262 (opens in a new tab)
- https://git.kernel.org/stable/c/6b1c8a9403a26cb0fed7a648916c74dc236da591 (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-2026-64366 (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-2026-74679)Record last updated .