Security readout for executives and security teams
Plain-English summary
This is a Linux kernel denial-of-service flaw in the Qualcomm MSM graphics driver. On systems without an IOMMU, the driver can dereference a null pointer and crash the kernel. Business impact is primarily availability loss, not data theft or privilege escalation based on the provided CVSS and sources.
Executive priority
Treat as a targeted availability risk. Patch affected Linux fleets through normal kernel maintenance, with higher priority for embedded or device fleets using Qualcomm MSM graphics where local users or untrusted workloads exist.
Technical view
The kernel fix adds checks before using the MSM DRM address-space pointer, which can remain null on no-IOMMU platforms such as msm8974. The CVSS vector is local, low complexity, low privilege, no user interaction, unchanged scope, and high availability impact only.
Likely exposure
Exposure appears limited to Linux systems running affected kernel versions with the drm/msm driver on hardware or configurations without IOMMU. The source bundle lists Linux kernel versions around 5.18 and stable fix commits, but provides no distro-specific package mapping.
Exploitation context
The provided data does not show active exploitation, and KEV is false. Exploitation would require local access with low privileges according to the CVSS vector. The documented outcome is kernel availability impact through null pointer dereference, not confidentiality or integrity compromise.
Researcher notes
Evidence is narrow but coherent: CWE-476, CVSS 5.5, and kernel commits fixing unchecked use of a nullable address-space pointer. No exploit details, proof of exploitation, or downstream advisory coverage are included in the provided bundle.
Mitigation direction
- Update to a kernel containing the referenced stable fixes.
- Check Linux distribution advisories for backported fixed kernel packages.
- Prioritize systems using Qualcomm MSM DRM on no-IOMMU platforms.
- If patching is delayed, review vendor-supported options to avoid the affected driver path.
Validation and detection
- Inventory kernels and identify systems running affected 5.18-era builds.
- Check whether drm/msm is present and relevant on deployed hardware.
- Confirm vendor kernel packages include the referenced upstream fixes.
- Track remediation through rebooted kernel version, not package installation alone.
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-2022-49499 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/f09937e80f9bc792965476c9a528f26c8fdc9179CVE reference, Linux
- https://git.kernel.org/stable/c/36a1d1bda77e1851bddfa9cf4e8ada94476dbaffCVE 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.