7.8

CVE-2022-50156: HID: cp2112: prevent a buffer overflow in cp2112_xfer()

Modified
AliasesUBUNTU-CVE-2022-50156DEBIAN-CVE-2022-50156
Published 18-06-2025Last modified 05-08-2026

Vulnerability summary

CVE-2022-50156 is a high (CVSS 7.8) Out-of-bounds Write vulnerability in linux. EPSS estimates a 0.23% chance of exploitation in the next 30 days, higher than 13.3% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 7.8, local access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
7.8/10
010
High · v3.1 (CVE.org)
EPSS score
0.23%
0%100%
Low · +0.01 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 7 · Related 6
RHSA-2023:2458SUSE-SU-2025:02264-1SUSE-SU-2025:02308-1SUSE-SU-2025:02320-1SUSE-SU-2025:02321-1SUSE-SU-2025:02322-1

Timeline

  1. 18-06-2025
    PublishedVulnerability first disclosed.
  2. 05-08-2026
    Last modifiedVulnerability information updated.

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().

CVSS metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

0.23%

Chance of exploitation in the next 30 days

Percentile

13%

Versus all other CVEs

30-day change

Increase +0.01 pp

From 0.22% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.

Ubuntu110 products
  • linux< 4.15.0-197.208 | < 5.4.0-132.148 | < 5.15.0-53.59
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-aws< 4.15.0-1143.155 | < 5.4.0-1089.97 | < 5.15.0-1023.27
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Linux2 products
  • linux≥ 542134c0375b5ca2b1d18490c02b8a20bfdd8d74, < 3af7d60e9a6c17d6d41c4341f8020511887d372d | ≥ 542134c0375b5ca2b1d18490c02b8a20bfdd8d74, < 519ff31a6ddd87aa4905bd9bf3b92e8b88801614 | ≥ 542134c0375b5ca2b1d18490c02b8a20bfdd8d74, < ebda3d6b004bb6127a66a616524a2de152302ca7 | ≥ 542134c0375b5ca2b1d18490c02b8a20bfdd8d74, < 8489a20ac481b08c0391608d81ed3796d373cfdf | ≥ 542134c0375b5ca2b1d18490c02b8a20bfdd8d74, < e7028944e61014ae915e7fb74963d3835f2f761a | ≥ 542134c0375b5ca2b1d18490c02b8a20bfdd8d74, < 26e427ac85c2b8d0d108cc80b6de34d33e2780c4 | ≥ 542134c0375b5ca2b1d18490c02b8a20bfdd8d74, < 381583845d19cb4bd21c8193449385f3fefa9caf | 4.15
  • linux_kernel≥ 4.15.1, < 4.19.256 | ≥ 4.20, < 5.4.211 | ≥ 5.5, < 5.10.137 | ≥ 5.11, < 5.15.61 | ≥ 5.16, < 5.18.18 | ≥ 5.19, < 5.19.2 | 4.15 | 4.15:rc6 | 4.15:rc7 | 4.15:rc8 | 4.15:rc9
Debian1 product
  • linux< 6.0.2-1

3 vendors · 113 products

References

10 links