Security readout for executives and security teams
Plain-English summary
This is a Linux kernel denial-of-service issue in a Qualcomm PHY driver. On affected systems, a runtime resume path can dereference a NULL pointer and crash kernel functionality, potentially disrupting device availability. It is not described as enabling data theft or code execution.
Executive priority
Treat this as a targeted availability risk, not a broad remote compromise. Patch during normal kernel maintenance unless exposed assets are business-critical embedded or edge systems where local disruption would cause operational impact.
Technical view
The qcom-qmp-combo PHY driver used the wrong PCS_USB base when no PCS_USB offset was provided. Platforms such as SC7180 can hit a NULL pointer dereference during runtime resume. The CVE maps to CWE-476 and CVSS 5.5 with local, low-privilege, availability-only impact.
Likely exposure
Exposure is most likely on Linux systems using the Qualcomm qcom-qmp-combo PHY driver, especially platforms without a PCS_USB offset such as SC7180. The source bundle identifies Linux 6.0-related affected ranges and stable kernel commits as references, but distribution backport status must be checked separately.
Exploitation context
The CVE is not listed as KEV, and the provided sources do not claim active exploitation. The CVSS vector indicates local access with low privileges, no user interaction, and high availability impact only.
Researcher notes
The key condition is the runtime resume path on platforms lacking a PCS_USB offset. Validate fixes by source or vendor backport evidence, not version strings alone, because Linux distributors often backport stable fixes without changing major kernel versions.
Mitigation direction
- Update to a vendor or distribution kernel containing the referenced stable fixes.
- Check device and SoC exposure for Qualcomm qcom-qmp-combo PHY usage.
- Prioritize affected mobile, embedded, or edge systems where uptime matters.
- If patch status is unclear, follow kernel or distribution vendor guidance.
Validation and detection
- Inventory kernel versions across Qualcomm-based Linux systems.
- Confirm whether qcom-qmp-combo is present and active on target hardware.
- Review vendor changelogs for the referenced stable commits.
- Test runtime suspend and resume behavior in a controlled environment.
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.
CWE-476: 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-2022-49848 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
- 5.5 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/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:N/I:N/A:H1.83.6CISA-ADPVulnerability scoring details
Base CVSS 3.1 score
5.5MediumVector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/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/c559a8b5cfa3db196ced0257b288f17027621348CVE reference, Linux
- https://git.kernel.org/stable/c/04948e757148f870a31f4887ea2239403f516c3cCVE 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.
NULL Pointer Dereference
NULL Pointer Dereference represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.