Security readout for executives and security teams
Plain-English summary
This is a Linux kernel AMDGPU driver reliability bug. A local authenticated user could trigger a NULL pointer dereference in a GPU memory-management path, causing system availability impact such as a kernel crash. The public record does not show data theft, privilege escalation, or confirmed exploitation.
Executive priority
Treat as routine but time-bound kernel maintenance. The main business risk is local denial of service on AMDGPU-equipped Linux systems, not data compromise. Prioritize shared or production Linux systems where local users can run workloads.
Technical view
The issue is CWE-476 in drm/amdgpu. When CPU-based page table updates leave VM update fence pointers unused, NULL may later be passed to dma_fence_wait(). The fix installs a stub fence instead of NULL. CVSS 3.1 is 5.5, local, low complexity, low privileges, no confidentiality or integrity impact, high availability impact.
Likely exposure
Exposure is mainly Linux systems using the AMDGPU kernel driver on affected kernel versions or affected stable branch commits. Systems without AMDGPU usage are less likely to be practically exposed. The source bundle does not provide distribution package mappings.
Exploitation context
The CVE is not listed as KEV in the supplied bundle. Available evidence supports a local availability-impact scenario requiring low privileges and no user interaction. No cited source in the bundle confirms active exploitation or a public exploit.
Researcher notes
The record identifies the fix pattern but not distribution-specific package names. Validate against upstream stable commits and downstream backports. Avoid overstating exploitability: the evidence supports local crash potential through a NULL dereference, with no confirmed exploitation in the supplied sources.
Mitigation direction
- Apply kernel updates containing the referenced stable fixes.
- Prioritize AMD GPU systems, shared workstations, and multi-user Linux hosts.
- Check Linux distribution advisories for backported AMDGPU fixes.
- If patching is delayed, reduce untrusted local access where practical.
Validation and detection
- Inventory Linux hosts using the AMDGPU driver.
- Compare running kernel builds against vendor advisories and referenced stable commits.
- Confirm updated kernels are booted, not only installed.
- Review crash reports for AMDGPU NULL dereference symptoms.
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-476: 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-2023-53248 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/78b25110eb8c6990f7f5096bc0136c12a2b4cc99CVE reference, Linux
- https://git.kernel.org/stable/c/aa9e9ba5748c524eb0925a2ef6984b78793646d6CVE reference, Linux
- https://git.kernel.org/stable/c/187916e6ed9d0c3b3abc27429f7a5f8c936bd1f0CVE 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.
NULL Pointer Dereference
NULL Pointer Dereference represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.