LiveActive security incident?Get immediate response
CVE Record

CVE-2022-50623: fpga: prevent integer overflow in dfl_feature_ioctl_set_irq()

In the Linux kernel, the following vulnerability has been resolved: fpga: prevent integer overflow in dfl_feature_ioctl_set_irq() The "hdr.count * sizeof(s32)" multiplication can overflow on 32 bit systems leading to memory corruption. Use array_size() to fix that.

UnknownCVSS not scoredNot KEV-listedUpdated
Discuss exposureBack to CVEs
Glexia's TakeAutomated analysismoderate

Security readout for executives and security teams

Plain-English summary

CVE-2022-50623 is a Linux kernel flaw in FPGA device handling. On 32-bit systems, a size calculation can overflow and cause memory corruption. Business urgency depends on whether your environment runs affected Linux kernels with FPGA DFL functionality exposed. There is no sourced evidence of active exploitation.

Executive priority

Treat as targeted infrastructure hygiene, not an emergency internet-wide issue. Prioritize environments with 32-bit Linux and FPGA usage. If those conditions are absent, schedule normal kernel maintenance while monitoring vendor guidance.

Technical view

The issue is in dfl_feature_ioctl_set_irq(). The calculation hdr.count * sizeof(s32) can overflow on 32-bit systems, leading to memory corruption. The kernel fix uses array_size() for safer allocation sizing. The supplied version data is limited and somewhat ambiguous, so validate against vendor backports and referenced stable commits.

Likely exposure

Most relevant to 32-bit Linux systems using FPGA DFL device support, especially where local users or processes can access the related device ioctl path. Environments without FPGA DFL exposure are less likely to be affected. Confirm with kernel configuration, installed packages, and vendor advisories.

Exploitation context

The sources do not report public exploitation, weaponized exploit availability, or CISA KEV listing. The vulnerable code path appears device-interface dependent and likely local, but the sources do not state precise privilege requirements.

Researcher notes

The CVE record provides a concise kernel commit rationale but no CVSS, CWE, exploit details, or clear privilege model. Version metadata should be handled carefully; rely on distro advisories and the stable kernel commits to determine fixed builds.

Mitigation direction

  • Update to a kernel containing the referenced stable fixes or a vendor backport.
  • Check Linux distribution advisories for CVE-2022-50623 package status.
  • Prioritize 32-bit systems with FPGA DFL support enabled or accessible.
  • Restrict access to FPGA device interfaces where operationally possible.

Validation and detection

  • Inventory Linux kernel versions and architectures across affected assets.
  • Identify systems with FPGA DFL support or related kernel modules enabled.
  • Compare kernel source or vendor changelog against the referenced stable commits.
  • Confirm distribution packages include the integer-overflow fix.
  • Document systems where FPGA device access is unavailable or restricted.
Prepared
Confidence
medium
Sources
7

Public sources used

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.

ATT&CK lookup starting points

Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.

cve · low confidence lookup

CVE-2022-50623 mapping review

Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.

Open ATT&CK lookup
Vulnerability profileCVE Program record
Severity
Unknown
CVSS
Not scored
Known Exploited
No
Published
Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

0CVSS vectors
0Timeline events
0ADP providers
6Source links

CVSS and timeline data

No CVSS vectors or timeline events were available in the normalized CVE source material.

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
LinuxLinux322b598be4d9b9090cda560c4caab78704615ab4, 322b598be4d9b9090cda560c4caab78704615ab4, 322b598be4d9b9090cda560c4caab78704615ab4, 322b598be4d9b9090cda560c4caab78704615ab4, 322b598be4d9b9090cda560c4caab78704615ab4unaffected
LinuxLinux5.9, 0, 5.10.150, 5.15.75, 5.19.17, 6.0.3, 6.1affected
Weakness

CWE details

No CWE listed

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.