Security readout for executives and security teams
Plain-English summary
This is a Linux kernel USB host-controller suspend crash. On platforms such as NXP/Freescale i.MX8QM, enabling USB remote wakeup and then suspending can cause the kernel to access xHCI registers after clocks are gated. The main business impact is reliability and possible local impact, not confirmed remote compromise.
Executive priority
Address in normal kernel maintenance unless affected devices show suspend crashes or operate in safety-critical environments. For embedded products, prioritize validation because repeated suspend failures can create availability incidents and support costs. No source provided evidence of active exploitation.
Technical view
The xhci-plat suspend path can call xhci_disable_hub_port_wake after runtime suspend has gated the parent device clock. The cited fix resumes the controller before suspend so register access occurs while the clock is enabled. The CVSS vector is local, low complexity, low privileges, no user interaction, with low confidentiality, integrity, and availability impact.
Likely exposure
Exposure is most plausible on Linux systems using xhci-plat where runtime suspend, system suspend, and USB remote wake are enabled. The report specifically cites i.MX8QM. General fleet exposure depends on kernel build, platform driver use, power-domain behavior, and whether vendor kernels include the stable fixes.
Exploitation context
The bundle does not cite KEV listing or public exploitation. CVSS marks attack vector local and privileges required low. Treat this as a local reliability and hardening issue unless vendor telemetry or incident evidence shows crashes during suspend with remote wake enabled.
Researcher notes
The root cause is an ordering flaw between runtime suspend clock gating and system suspend register access. The fix resumes the device before suspend. The record lacks CWE mapping and provides limited affected-version detail, so confirm against kernel stable commits and downstream vendor patches.
Mitigation direction
- Update to a kernel or vendor build containing the referenced stable xhci-plat fixes.
- Check vendor advisories for platform-specific backports and suspend or remote-wake guidance.
- Prioritize embedded or appliance fleets that rely on suspend and USB wake behavior.
- Avoid assuming a generic configuration workaround unless the platform vendor documents one.
Validation and detection
- Inventory Linux versions and vendor kernel branches on systems using USB xHCI platform controllers.
- Confirm whether the referenced stable commits are present or backported.
- Review kernel logs for suspend-time xHCI crashes or synchronous external aborts.
- Lab-test suspend and resume on representative affected hardware after patching.
- Verify remote-wake requirements before changing any power-management settings.
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
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CVE-2022-48761 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
- Medium
- CVSS
- 5.3 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
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:L/I:L/A:L1.83.4CISA-ADPVulnerability scoring details
Base CVSS 3.1 score
5.3MediumVector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
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/20c51a4c52208f98e27308c456a1951778f41fa5CVE reference, Linux
- https://git.kernel.org/stable/c/d5755832a1e47f5d8773f0776e211ecd4e02da72CVE reference, Linux
- https://git.kernel.org/stable/c/8b05ad29acb972850ad795fa850e814b2e758b83CVE reference, Linux
- https://git.kernel.org/stable/c/9df478463d9feb90dae24f183383961cf123a0ecCVE 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.