Security readout for executives and security teams
Plain-English summary
CVE-2026-64050 is a Linux kernel flaw in the msm DPU display driver cleanup path. A local low-privileged user could potentially trigger use-after-free behavior during driver teardown, risking kernel-level confidentiality, integrity, and availability impact. The sources identify kernel fixes but do not show active exploitation.
Executive priority
Treat as high priority for Linux endpoints or devices with exposed local user access and affected display drivers. It is not currently evidenced as internet-exploitable or actively exploited, but kernel use-after-free impact justifies timely remediation.
Technical view
The issue occurs because drm/msm/dpu mixed devm-managed and drmm-managed lifetimes. WB connector data allocated with devm_kzalloc() could be freed while userspace still holds a DRM device reference, leaving later connector interaction exposed to use-after-free. The fix changes dpu_writeback_init() to use drmm-managed allocation consistently.
Likely exposure
Exposure is most likely on Linux systems running affected kernels with the drm/msm/dpu driver enabled or loaded. The provided version data references affected Linux kernel lines including 6.18, 6.18.34, 7.0.11, and 7.1, but distro package mapping requires vendor verification.
Exploitation context
The CVSS vector is local, low complexity, low privileges, and no user interaction. The CVE is not marked KEV, and the provided sources do not report active exploitation or public exploit availability.
Researcher notes
Key uncertainty is affected-version normalization: the source bundle lists commits and kernel versions but no distro-specific package names. Analysis should focus on the msm DPU writeback connector lifetime mismatch and whether downstream kernels carried the vulnerable allocation pattern.
Mitigation direction
- Update to a kernel containing the referenced stable fixes.
- Check Linux distribution advisories for backported kernel package status.
- Prioritize systems where untrusted local users can access affected graphics devices.
- Limit local account access on shared systems until patched.
- Track vendor guidance if your kernel is custom or downstream-patched.
Validation and detection
- Inventory kernel versions and compare against vendor fixed packages.
- Confirm whether the drm/msm/dpu driver is built, loaded, or reachable.
- Verify patched kernels include the referenced stable commits or equivalent backports.
- Review logs for unexpected DRM driver teardown or graphics subsystem crashes.
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.
CVE-2026-64050 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.
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:H1.85.9LinuxVulnerability 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.
Source materials
- CVE List V5 sourceCVE List V5
- https://git.kernel.org/stable/c/ff58e5ef1b46ce614af048d2d04986df05ffab90CVE reference, Linux
- https://git.kernel.org/stable/c/95048a12f48c627bc2ccc4d84f87640630ba2bdbCVE reference, Linux
- https://git.kernel.org/stable/c/c0c70a11365cba7fba25a77463582bcec0f7846eCVE 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.