CVE-2023-52931: drm/i915: Avoid potential vm use-after-free
In the Linux kernel, the following vulnerability has been resolved:
drm/i915: Avoid potential vm use-after-free
Adding the vm to the vm_xa table makes it visible to userspace, which
could try to race with us to close the vm. So we need to take our extra
reference before putting it in the table.
(cherry picked from commit 99343c46d4e2b34c285d3d5f68ff04274c2f9fb4)
Security readout for executives and security teams
Plain-English summary
This is a Linux kernel flaw in the Intel i915 graphics driver. A local user could potentially trigger a use-after-free condition by racing virtual memory handling, creating risk to confidentiality, integrity, and availability on affected Linux systems.
Executive priority
Treat as high priority where affected Linux endpoints or shared systems use Intel i915 graphics. It is not described as remotely exploitable, but local privilege and stability impacts can still create material operational risk.
Technical view
CVE-2023-52931 is a CWE-416 use-after-free in drm/i915 VM handling. The source says a VM became visible to userspace before an extra reference was taken, allowing a race with VM close. CVSS 3.1 is 7.8 with local, low-complexity, low-privilege exploitation characteristics.
Likely exposure
Exposure is most likely on Linux systems running affected kernel versions with the drm/i915 driver in use, especially Intel GPU workstations, laptops, and multi-user Linux environments. The source does not identify specific distributions or downstream package versions.
Exploitation context
The provided bundle does not show CISA KEV listing or cited evidence of active exploitation. The CVSS vector indicates local authenticated access is required, with no user interaction, and potential high impact across confidentiality, integrity, and availability.
Researcher notes
The core issue is reference ordering around publishing the VM into vm_xa. Evidence is limited to the CVE description, CVSS data, and Linux stable commit references. No exploit details, distribution mapping, or confirmed exploitation are provided in the bundle.
Mitigation direction
Upgrade to a vendor-supported kernel containing the cited stable fixes.
Check your Linux distribution advisory for exact fixed package versions.
Prioritize multi-user systems and endpoints with Intel i915 graphics enabled.
Limit unnecessary local shell access until patched.
Do not rely on unverified third-party patch guidance.
Validation and detection
Inventory Linux kernel versions across affected assets.
Confirm whether drm/i915 is present and used on each system.
Compare installed kernels against vendor advisories and the cited stable commits.
Review local-user exposure on shared workstations and developer systems.
Track remediation through kernel package update records.
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Potential ATT&CK relevance
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 · low confidence lookup
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.
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.
1CVSS vectors
3Timeline events
1ADP providers
3Source links
SSVC decision data
CISA-ADPCISA Coordinator
Timestamp
Version
2.0.3
Exploitation: noneAutomatable: noTechnical Impact: total
CVSS vector scores
1 official score
We 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.
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
CWE-416 · source CWE mapping
Use After Free
Use After Free represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.