Security readout for executives and security teams
Plain-English summary
CVE-2024-57926 is a Linux kernel use-after-free bug in the MediaTek DRM graphics driver. If an initialization failure leaves a stale pointer behind, the shutdown path can touch freed memory. The CVSS score is high, but the sources describe a local kernel bug and do not report active exploitation.
Executive priority
Treat as high priority for MediaTek Linux fleets and embedded products. It is less urgent for systems without the MediaTek DRM path. Patch through normal kernel or vendor update channels after confirming applicability.
Technical view
In drm/mediatek, mtk_drm_bind assigns per-private drm pointers. If mtk_drm_kms_init fails, drm_dev_put frees the drm object, but shutdown later reaches drm_atomic_helper_shutdown through mtk_drm_shutdown and can dereference the stale pointer. The fix clears private->all_drm_private[i]->drm on the error path.
Likely exposure
Exposure appears limited to Linux kernels with the affected MediaTek DRM driver code, especially MediaTek-based devices or builds enabling that driver. The provided affected-version data is incomplete and should be confirmed against kernel or distro advisories.
Exploitation context
The bundle marks KEV as false and includes no source reporting exploitation in the wild. The evidence is a KASAN use-after-free crash trace during shutdown or reboot after a driver initialization failure, not a public exploit report.
Researcher notes
The root issue is stale pointer lifetime after an error path in mtk_drm_bind and mtk_drm_kms_init. CVSS indicates local, low-privilege impact potential, but the bundle does not prove a practical privilege-escalation path beyond the documented kernel memory-safety fault.
Mitigation direction
- Update affected kernels to releases containing the referenced stable commits.
- Prioritize MediaTek-based systems where the DRM driver is built and used.
- Check Linux distribution or device-vendor advisories for backported fixes.
- Restrict unnecessary local access until affected systems are patched.
Validation and detection
- Inventory Linux kernel versions on MediaTek-based systems.
- Confirm whether the MediaTek DRM driver is enabled or loaded.
- Map installed kernels to vendor advisories or the referenced stable commits.
- Review crash logs for KASAN use-after-free reports in drm_atomic_helper_shutdown.
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
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ATT&CK lookup starting points
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CWE-416: Exact CWE lookup
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Open ATT&CK lookupCVE-2024-57926 mapping review
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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/7083b93e9755d60f0c2bcaa9d064308108280534CVE reference, Linux
- https://git.kernel.org/stable/c/078b2ff7da200b7532398e668eef723ad40fb516CVE reference, Linux
- https://git.kernel.org/stable/c/36684e9d88a2e2401ae26715a2e217cb4295cea7CVE 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.
Use After Free
Use After Free represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.