Security readout for executives and security teams
Plain-English summary
CVE-2022-50366 is a Linux kernel flaw in Intel RAPL power management handling. A local low-privileged user may be able to trigger a kernel error that affects confidentiality and availability. Public sources do not show active exploitation, and CISA KEV status is false in the provided data.
Executive priority
Treat as a priority kernel update for Linux fleets, especially multi-user servers and research or compute systems. It is not presented as internet-exploitable in the sources, but kernel confidentiality and availability impact warrants timely remediation.
Technical view
The issue is in powercap intel_rapl. When a time-window value is smaller than time_unit, ilog2() can return -1, which is cast to u64 and used as an invalid shift exponent. The call path includes rapl_compute_time_window_core, rapl_write_data_raw, set_time_window, and store_constraint_time_window_us.
Likely exposure
Exposure is likely limited to Linux systems running affected kernels with Intel RAPL powercap functionality available. The CVE has local attack vector, low privileges required, and no user interaction. Version mapping should be confirmed against Linux stable commits and distribution advisories.
Exploitation context
The provided sources rate this CVSS 7.1 with local access and low privileges required. No KEV listing or cited public source confirms active exploitation. The known impact is kernel-level confidentiality and availability risk, not remote compromise.
Researcher notes
The source data names CWE-125, but the description centers on a shift-out-of-bounds condition in intel_rapl time-window computation. Affected-version data is not sufficiently clear for precise fleet matching without distribution-specific advisories or kernel commit verification.
Mitigation direction
- Apply kernel updates from your Linux distribution or vendor.
- Confirm the update includes the referenced Linux stable fixes.
- Prioritize shared systems with untrusted local users.
- If patching is delayed, limit unnecessary local user access.
- Monitor vendor advisories for corrected package versions.
Validation and detection
- Inventory Linux kernels and identify Intel RAPL powercap exposure.
- Compare running kernels against vendor fixed-version guidance.
- Check whether referenced stable commits are included in deployed kernels.
- Review kernel logs for related UBSAN or powercap warnings.
- Track remediation through configuration and vulnerability management systems.
Public sources used
- CVE Program
- CVE List V5
- Linux stable commit 42f79dbb9514
- Linux stable commit 3eb0ba70376f
- Linux stable commit 4ebba4338472
- Linux stable commit 49a6ffdaed60
- Linux stable commit 708b9abe1b4a
- Linux stable commit 139bbbd01114
- Linux stable commit 6216b685b8f4
- Linux stable commit 1d94af37565e
- Linux stable commit 2d9354001438
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.
CWE-125: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCVE-2022-50366 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
- High
- CVSS
- 7.1 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
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.
SSVC decision data
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H1.85.2CISA-ADPVulnerability scoring details
Base CVSS 3.1 score
7.1HighVector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
Vulnerability timeline
Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.
- CVE reservedCVE Program
The CVE ID was reserved by the assigning CNA.
- CVE publishedCVE Program
The CVE record was published.
- CVE updatedCVE Program
The CVE record metadata indicates this as the latest update time.
ADP provider summaries
Source materials
- CVE List V5 sourceCVE List V5
- https://git.kernel.org/stable/c/42f79dbb9514f726ff21df25f09cb0693b0b2445CVE reference, Linux
- https://git.kernel.org/stable/c/3eb0ba70376f6ee40fa843fc9cee49269370b0b3CVE reference, Linux
- https://git.kernel.org/stable/c/4ebba43384722adbd325baec3a12c572d94488ebCVE reference, Linux
- https://git.kernel.org/stable/c/49a6ffdaed60f0eb52c198fafebc05994e16e305CVE reference, Linux
- https://git.kernel.org/stable/c/708b9abe1b4a2f050a483db4b7edfc446b13df1fCVE reference, Linux
- https://git.kernel.org/stable/c/139bbbd01114433b80fe59f5e1330615aadf9752CVE reference, Linux
- https://git.kernel.org/stable/c/6216b685b8f48ab7b721a6fd5acbf526b41c13e8CVE reference, Linux
- https://git.kernel.org/stable/c/1d94af37565e4d3c26b0d63428e093a37d5b4c32CVE reference, Linux
- https://git.kernel.org/stable/c/2d93540014387d1c73b9ccc4d7895320df66d01bCVE reference, Linux
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.
Out-of-bounds Read
Out-of-bounds Read represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.