Security readout for executives and security teams
Plain-English summary
CVE-2022-50868 is a Linux kernel bug in the AMD hardware random number generator driver. The issue is a missing PCI device reference release, which can leak kernel object references. Public sources do not provide CVSS, real-world impact, or evidence of active exploitation, so urgency is mainly tied to normal kernel hygiene and exposure to affected Linux versions.
Executive priority
Treat as a routine kernel patching item unless vendor guidance raises severity. There is no cited evidence of active exploitation or business-critical impact, but affected Linux systems should still receive normal security maintenance.
Technical view
The Linux kernel hwrng amd driver used for_each_pci_dev(), which increments the returned pci_dev reference. When the loop exits with pdev still set, the driver must call pci_dev_put(). The fix adds the missing pci_dev_put() on normal and error paths. The CVE record lists multiple Linux kernel version ranges and stable backport commits.
Likely exposure
Systems running affected Linux kernel versions with the AMD hwrng driver code present may be exposed. The source bundle lists Linux kernels from 2.6.18 through several stable series as affected, with fixes represented by kernel stable commits. Distribution-specific exposure may differ based on backports.
Exploitation context
No public source in the bundle reports active exploitation, and the CVE is not marked KEV. The described flaw is a kernel reference-count leak, not a directly documented remote code execution issue. Exploitability and practical impact are not established in the provided sources.
Researcher notes
The record is sparse: no CVSS, CWE, exploit discussion, or distribution advisories are included. Analysis should center on kernel commit lineage and downstream backports. Avoid assuming impact beyond the documented PCI device reference-count leak.
Mitigation direction
- Identify Linux kernel versions in use across servers, appliances, and images.
- Check your Linux distribution advisory for CVE-2022-50868 status and backported fixes.
- Update to a kernel build containing the referenced stable commits or vendor-equivalent fix.
- Prioritize routine kernel maintenance where AMD hwrng-capable systems are present.
Validation and detection
- Compare running kernel versions against vendor security advisories for this CVE.
- Confirm the kernel package changelog includes the hwrng amd pci_dev_put fix.
- For custom kernels, verify the relevant stable commit is applied.
- Track exceptions for systems unable to receive kernel updates promptly.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
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-2022-50868 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
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.
CVSS and timeline data
No CVSS vectors or timeline events were available in the normalized CVE source material.
Source materials
- CVE List V5 sourceCVE List V5
- https://git.kernel.org/stable/c/f1c97f72ffd504f49882774e2ab689d982dc7afcCVE reference
- https://git.kernel.org/stable/c/526c316948819d3ecd2bb20fe5e2580c51a1b760CVE reference
- https://git.kernel.org/stable/c/e246f5eff26055bdcb61a2cc99c50af72a19680fCVE reference
- https://git.kernel.org/stable/c/1199f8e02941b326c60ab71a63002b7c80e38212CVE reference
- https://git.kernel.org/stable/c/5998e5c30e839f73e62cb29e0d9617b0d16ccba3CVE reference
- https://git.kernel.org/stable/c/2b79a5e560779b35e1164d57ae35c48b43373082CVE reference
- https://git.kernel.org/stable/c/cb348c7908631dd9f60083a0a1542eab055d3edfCVE reference
- https://git.kernel.org/stable/c/2e10ecd012ae2b2a374b34f307e9bc1e6096c03dCVE reference
- https://git.kernel.org/stable/c/ecadb5b0111ea19fc7c240bb25d424a94471eb7dCVE reference
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.