Security readout for executives and security teams
Plain-English summary
This is a Linux kernel use-after-free in the MSM/DPU display driver path. A local low-privileged user could potentially trigger serious impact on confidentiality, integrity, and availability, according to the CVSS vector. The source bundle does not show public exploitation or CISA KEV listing.
Executive priority
Treat as high priority for affected Linux fleets, especially shared or user-accessible systems. Business urgency depends on whether the MSM/DPU display driver path is present. Patch through normal kernel update channels after validation and regression testing.
Technical view
The resolved bug sets the VBIF hardware config pointer to NULL to avoid use-after-free during PM runtime resume. The crash trace reaches dpu_vbif_init_memtypes and dpu_runtime_resume during MSM DRM teardown/resume behavior. It is classified as CWE-416 with CVSS 3.1 score 7.8.
Likely exposure
Exposure is most likely on Linux systems using affected kernel versions with the drm/msm/disp/dpu1 display stack. The source lists Linux as affected and names versions including 4.19, 4.19.247, 5.4.198, 5.10.121, 5.15.46, 5.17.14, 5.18.3, and 5.19.
Exploitation context
No active exploitation is evidenced in the provided sources, and KEV is false. The CVSS vector indicates local attack, low complexity, low privileges required, and no user interaction. The bundle provides a kernel crash trace and fixed stable commits, but no exploit details.
Researcher notes
The evidence supports a kernel use-after-free fixed in stable commits, but the bundle does not prove exploitability beyond the CVSS assessment. Focus analysis on PM runtime resume, MSM DRM teardown, and whether downstream kernels carried the vulnerable commit before the listed fixes.
Mitigation direction
- Update affected Linux kernels through the appropriate vendor or distribution channel.
- Confirm the deployed kernel includes the relevant stable fix commits.
- Prioritize systems where untrusted users can run local code.
- Track vendor advisories if your kernel is downstream or device-specific.
- Do not rely on KEV absence as proof of safety.
Validation and detection
- Inventory kernel versions across Linux hosts and device images.
- Check whether systems use the drm/msm/disp/dpu1 display path.
- Compare kernel source or package changelogs against cited stable commits.
- Review kernel logs for matching dpu_runtime_resume crash traces.
- Confirm vulnerability scanner findings against vendor kernel advisories.
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-416: 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-2022-49489 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
- 7.8 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/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:H/A:H1.85.9CISA-ADPVulnerability scoring details
Base CVSS 3.1 score
7.8HighVector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/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/aa4cb188988dc6f1b3f4917d4dbc452150a5d871CVE reference, Linux
- https://git.kernel.org/stable/c/ef10d0c68e8608848cd58fca2589685718426607CVE reference, Linux
- https://git.kernel.org/stable/c/134760263f6441741db0b2970e7face6b34b6d1cCVE reference, Linux
- https://git.kernel.org/stable/c/ef4bdaac7cb5416f236613ed9337ff0ea8ee329bCVE reference, Linux
- https://git.kernel.org/stable/c/97ac682b6f7d36be5d934f86c9911066540a68f1CVE reference, Linux
- https://git.kernel.org/stable/c/5b0adf5cbf3b74721e4e4c4e0cadc91b8df8bcc2CVE reference, Linux
- https://git.kernel.org/stable/c/fa5186b279ecf44b14fb435540d2065be91cb1edCVE 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.