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CVE-2022-48938
CDC-NCM: avoid overflow in sanity checking
Medium5.5EPSS 0.21%
- Published
- Updated
- Reserved
- Assigned by
- Linux
Description
In the Linux kernel, the following vulnerability has been resolved: CDC-NCM: avoid overflow in sanity checking A broken device may give an extreme offset like 0xFFF0 and a reasonable length for a fragment. In the sanity check as formulated now, this will create an integer overflow, defeating the sanity check. Both offset and offset + len need to be checked in such a manner that no overflow can occur. And those quantities should be unsigned.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 3.1 | Medium5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
- EPSS (exploitation in 30 days)
- 0.21% · top 88% of all CVEs (6 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: partial
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The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.5.
Weakness
Affected products
- affected 4ca8b8855264cf1439cdab3da7049bd1e3c2a9e6 – < a612395c7631918e0e10ea48b9ce5ab4340f26a6
- affected a270ca35a9499b58366d696d3290eaa4697a42db – < 9957fbf34f52a4d8945d1bf39aae400ef9a11246
- affected 0fa81b304a7973a499f844176ca031109487dd31 – < 69560efa001397ebb8dc1c3e6a3ce00302bb9f7f
- affected 0fa81b304a7973a499f844176ca031109487dd31 – < 49909c9f8458cacb5b241106cba65aba5a6d8f4c
- affected 0fa81b304a7973a499f844176ca031109487dd31 – < 7b737e47b87589031f0d4657f6d7b0b770474925
- affected 0fa81b304a7973a499f844176ca031109487dd31 – < 8d2b1a1ec9f559d30b724877da4ce592edc41fdc
- affected 8cf7db86a8984ffa3a3388a8df12bc0aa4c79bd7
- affected 4.19.285 – < 4.19.323
- affected 5.4.245 – < 5.4.285
- affected 4.14.317 – < 4.15
- affected 5.7
- unaffected < 5.7
- unaffected 4.19.323 – ≤ 4.19.*
- unaffected 5.4.285 – ≤ 5.4.*
- unaffected 5.10.103 – ≤ 5.10.*
- unaffected 5.15.26 – ≤ 5.15.*
- unaffected 5.16.12 – ≤ 5.16.*
- unaffected 5.17 – ≤ *
References (6)
- https://git.kernel.org/stable/c/a612395c7631918e0e10ea48b9ce5ab4340f26a6 (opens in a new tab)
- https://git.kernel.org/stable/c/9957fbf34f52a4d8945d1bf39aae400ef9a11246 (opens in a new tab)
- https://git.kernel.org/stable/c/69560efa001397ebb8dc1c3e6a3ce00302bb9f7f (opens in a new tab)
- https://git.kernel.org/stable/c/49909c9f8458cacb5b241106cba65aba5a6d8f4c (opens in a new tab)
- https://git.kernel.org/stable/c/7b737e47b87589031f0d4657f6d7b0b770474925 (opens in a new tab)
- https://git.kernel.org/stable/c/8d2b1a1ec9f559d30b724877da4ce592edc41fdc (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)
- 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://trackcve.app/cve/CVE-2022-48938)Record last updated .