CVE-2022-50156HID: cp2112: prevent a buffer overflow in cp2112_xfer()
- 7.8HighCVSS base score
- 0.23%Exploitation in 30 daysEPSS · top 87% 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: HID: cp2112: prevent a buffer overflow in cp2112_xfer() Smatch warnings: drivers/hid/hid-cp2112.c:793 cp2112_xfer() error: __memcpy() 'data->block[1]' too small (33 vs 255) drivers/hid/hid-cp2112.c:793 cp2112_xfer() error: __memcpy() 'buf' too small (64 vs 255) The 'read_length' variable is provided by 'data->block[0]' which comes from user and it(read_length) can take a value between 0-255. Add an upper bound to 'read_length' variable to prevent a buffer overflow in memcpy().
Timeline
ID reserved
By Linux
Published
- 14 months later
· 14 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
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| LinuxCNA (assigner) | 3.1 | High7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| NVDNVD · Modified | 3.1 | High7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 0.23% · top 87% of all CVEs (13 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.8.
Affected products
- affected 542134c0375b5ca2b1d18490c02b8a20bfdd8d74 – < 3af7d60e9a6c17d6d41c4341f8020511887d372d
- affected 542134c0375b5ca2b1d18490c02b8a20bfdd8d74 – < 519ff31a6ddd87aa4905bd9bf3b92e8b88801614
- affected 542134c0375b5ca2b1d18490c02b8a20bfdd8d74 – < ebda3d6b004bb6127a66a616524a2de152302ca7
- affected 542134c0375b5ca2b1d18490c02b8a20bfdd8d74 – < 8489a20ac481b08c0391608d81ed3796d373cfdf
- affected 542134c0375b5ca2b1d18490c02b8a20bfdd8d74 – < e7028944e61014ae915e7fb74963d3835f2f761a
- affected 542134c0375b5ca2b1d18490c02b8a20bfdd8d74 – < 26e427ac85c2b8d0d108cc80b6de34d33e2780c4
- affected 542134c0375b5ca2b1d18490c02b8a20bfdd8d74 – < 381583845d19cb4bd21c8193449385f3fefa9caf
- affected 4.15
- unaffected < 4.15
- unaffected 4.19.256 – ≤ 4.19.*
- unaffected 5.4.211 – ≤ 5.4.*
- unaffected 5.10.137 – ≤ 5.10.*
- unaffected 5.15.61 – ≤ 5.15.*
- unaffected 5.18.18 – ≤ 5.18.*
- unaffected 5.19.2 – ≤ 5.19.*
- unaffected 6.0 – ≤ *
References
References7
- https://git.kernel.org/stable/c/3af7d60e9a6c17d6d41c4341f8020511887d372d (opens in a new tab)
- https://git.kernel.org/stable/c/519ff31a6ddd87aa4905bd9bf3b92e8b88801614 (opens in a new tab)
- https://git.kernel.org/stable/c/ebda3d6b004bb6127a66a616524a2de152302ca7 (opens in a new tab)
- https://git.kernel.org/stable/c/8489a20ac481b08c0391608d81ed3796d373cfdf (opens in a new tab)
- https://git.kernel.org/stable/c/e7028944e61014ae915e7fb74963d3835f2f761a (opens in a new tab)
- https://git.kernel.org/stable/c/26e427ac85c2b8d0d108cc80b6de34d33e2780c4 (opens in a new tab)
- https://git.kernel.org/stable/c/381583845d19cb4bd21c8193449385f3fefa9caf (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-2022-55421 (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-2022-50156)Record last updated .