Security readout for executives and security teams
Plain-English summary
CVE-2024-35927 is a Linux kernel DRM issue that can cause suspend failure on systems whose graphics driver does not initialize connector polling, such as the cited Hyper-V DRM case. The business impact is availability: affected hosts may fail power-state transitions rather than leak data or allow privilege escalation.
Executive priority
Treat as routine but time-bound kernel maintenance for affected Linux fleets. It is not sourced as remotely exploitable or actively exploited, but it can disrupt availability where suspend/resume is operationally important.
Technical view
The fix adds checks before disabling DRM output polling in drm_kms_helper_poll_disable() and avoids suspend/resume helper calls when polling is uninitialized. The cited stack trace shows a kernel warning during systemd-sleep through hyperv_drm, drm_mode_config_helper_suspend(), and drm_kms_helper_poll_disable(). CVSS is 5.5, local, low complexity, low privileges, availability high.
Likely exposure
Exposure is most plausible on Linux systems using DRM drivers that skip connector polling initialization, with Hyper-V DRM specifically cited. The bundle identifies Linux kernel version and commit ranges but does not provide distribution-specific package names.
Exploitation context
The provided sources do not show active exploitation, and KEV is false. The CVSS vector requires local access with low privileges and no user interaction. Evidence supports a local availability problem during suspend/resume paths, not remote compromise.
Researcher notes
Focus validation on the DRM KMS helper suspend/resume path and drivers without connector polling initialization. The source bundle includes stable commit references but incomplete distro-level applicability, so map fixes through downstream vendor kernels before declaring exposure closed.
Mitigation direction
- Update to a vendor kernel containing the referenced stable DRM polling checks.
- Check distribution advisories for fixed package versions matching your kernel stream.
- Prioritize Hyper-V Linux guests or systems using DRM suspend/resume paths.
- Avoid inventing workarounds; follow Linux distribution or kernel vendor guidance.
Validation and detection
- Inventory Linux kernel versions and compare against vendor fixed builds.
- Check whether affected systems load hyperv_drm or similar DRM drivers.
- Review logs for suspend failures involving drm_kms_helper_poll_disable or __flush_work warnings.
- Confirm patched kernels include the referenced stable commits.
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-2024-35927 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/3d1b47e3a935abd4f258a945db87e7267ff4079cCVE reference, Linux
- https://git.kernel.org/stable/c/18451798f4a4e7418b9fad7e7dd313fe84b1f545CVE reference, Linux
- https://git.kernel.org/stable/c/5abffb66d12bcac84bf7b66389c571b8bb6e82bdCVE reference, Linux
- https://git.kernel.org/stable/c/786c27982a39d79cc753f84229eb5977ac8ef1c1CVE reference, CVE · x_transferred
- https://git.kernel.org/stable/c/4ad8d57d902fbc7c82507cfc1b031f3a07c3de6eCVE reference, CVE · x_transferred
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.