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NVD / CVE Program· CNA Linux

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

Noroxi assessment

Priority: Monitor (action score 31/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.22% (FIRST EPSS).
  • Someone with local access to the system can trigger it. A low-privileged account is enough. No user action is required. No special conditions are required; it is repeatable.
  • Fixed version: Linux Linux 26e427ac85c2b8d0d108cc80b6de34d33e2780c4, 381583845d19cb4bd21c8193449385f3fefa9caf, 3af7d60e9a6c17d6d41c4341f8020511887d372d.

Low priority for now. Upgrade to Linux Linux 26e427ac85c2b8d0d108cc80b6de34d33e2780c4, 381583845d19cb4bd21c8193449385f3fefa9caf, 3af7d60e9a6c17d6d41c4341f8020511887d372d or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

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().

HighCVSS 7.8 · v3.1—No exploit Fix available
Published
Jun 18, 2025
Updated
Aug 5, 2026
EPSS
0.2% · 13th percentile

Report tools

JSON

Action score

31

Monitor

Low priority for now.

CVSS
31 / 40 · 7.8 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.2%

CNA vs NVD score

NVD
7.8
CNA · Linux
7.8
agree

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

If any of these changes, we'll tell you in the daily email digest.

Follow CVE-2022-50156

When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
linuxlinux kernel

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • linux linux kernel4.15.1 and later · before 4.19.256
  • linux linux kernel4.20 and later · before 5.4.211
  • linux linux kernel5.5 and later · before 5.10.137
  • linux linux kernel5.11 and later · before 5.15.61
  • linux linux kernel5.16 and later · before 5.18.18
  • linux linux kernel5.19 and later · before 5.19.2
  • linux linux kernel4.15

Versions reported by the vendor

Affected version ranges reported by the assigning authority (Linux). Independent of NVD's CPE analysis and usually ahead of it.

  • Linux Linux

    • 4.15affected
    • 542134c0375b5ca2b1d18490c02b8a20bfdd8d74 and later · before 3af7d60e9a6c17d6d41c4341f8020511887d372daffected · git
    • 542134c0375b5ca2b1d18490c02b8a20bfdd8d74 and later · before 519ff31a6ddd87aa4905bd9bf3b92e8b88801614affected · git
    • 542134c0375b5ca2b1d18490c02b8a20bfdd8d74 and later · before ebda3d6b004bb6127a66a616524a2de152302ca7affected · git
    • 542134c0375b5ca2b1d18490c02b8a20bfdd8d74 and later · before 8489a20ac481b08c0391608d81ed3796d373cfdfaffected · git
    • 542134c0375b5ca2b1d18490c02b8a20bfdd8d74 and later · before e7028944e61014ae915e7fb74963d3835f2f761aaffected · git
    • 542134c0375b5ca2b1d18490c02b8a20bfdd8d74 and later · before 26e427ac85c2b8d0d108cc80b6de34d33e2780c4affected · git
    • 542134c0375b5ca2b1d18490c02b8a20bfdd8d74 and later · before 381583845d19cb4bd21c8193449385f3fefa9cafaffected · git
    • before 4.15not affected · semver
    • 4.19.256 and later · up to and including 4.19.*not affected · semver

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 6.0.2-16.0.2-1

Same product

linux: all records

Other highest-scoring records for the same primary product.

  • CVE-2026-31431crypto: algif_aead - Revert to operating out-of-placeKEV
    90Now
  • CVE-2022-0847A flaw was found in the way the "flags" member of the new pipe buffer structure was lacking proper initialization in copy_page_to_iter_pipe KEV
    89Now
  • CVE-2021-22555Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACEKEV
    85Now

Published before and after this one in the same product

  • ← EarlierCVE-2022-50154Jun 18, 2025 · PCI: mediatek-gen3: Fix refcount leak in mtk_pcie_init_irq_domains()
    22Monitor
  • ← EarlierCVE-2022-50155Jun 18, 2025 · mtd: parsers: ofpart: Fix refcount leak in bcm4908_partitions_fw_offset
    22Monitor
  • Later →CVE-2022-50157Jun 18, 2025 · PCI: microchip: Fix refcount leak in mc_pcie_init_irq_domains()
    22Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
Linux Linux26e427ac85c2b8d0d108cc80b6de34d33e2780c4Vendor (CNA)
Linux Linux381583845d19cb4bd21c8193449385f3fefa9cafVendor (CNA)
Linux Linux3af7d60e9a6c17d6d41c4341f8020511887d372dVendor (CNA)
Linux Linux519ff31a6ddd87aa4905bd9bf3b92e8b88801614Vendor (CNA)
Linux Linux8489a20ac481b08c0391608d81ed3796d373cfdfVendor (CNA)
Linux Linuxe7028944e61014ae915e7fb74963d3835f2f761aVendor (CNA)
Linux Linuxebda3d6b004bb6127a66a616524a2de152302ca7Vendor (CNA)
debian:linux6.0.2-1 · Debian:12Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

No history yet (it accumulates with the daily EPSS job).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • Someone with local access to the system can trigger it.
  • A low-privileged account is enough.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
high · data can be read
Integrity
high · data or configuration can be modified
Availability
high · the service can be disrupted
Attack vector
Local
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
Unchanged
Confidentiality impact
High
Integrity impact
High
Availability impact
High

Weakness class (CWE)

CWE-787 · Out-of-bounds Write

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

nvd-primary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

Change log

  1. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Show all references (6 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records