Security readout for executives and security teams
Plain-English summary
This Linux kernel issue is a resource leak in the sprd IOMMU driver. When an IOMMU domain is freed, a DMA buffer used for address mapping was not released. The business risk is likely availability degradation on affected systems, but the sources provide no CVSS score, exploit evidence, or detailed impact scope.
Executive priority
Treat this as a targeted kernel maintenance item, not an emergency, unless affected sprd IOMMU systems support critical workloads or show memory pressure. Prioritize inventory and patch alignment through normal kernel update processes.
Technical view
The vulnerability is in Linux kernel iommu/sprd domain lifecycle handling. During attach, the driver allocates a DMA buffer for an address mapping table; before the fix, that buffer was not released when the IOMMU domain was freed. Kernel stable commits resolve the leak by releasing the DMA buffer.
Likely exposure
Exposure appears limited to Linux kernels using the sprd IOMMU driver on affected kernel versions or commit ranges. The source bundle lists Linux 5.13 through fixed stable versions including 5.15.113, 6.1.81, 6.3.4, and 6.4, but exact downstream vendor impact requires kernel build verification.
Exploitation context
CISA KEV is false, and the provided sources do not claim active exploitation, public exploit code, or remote attackability. The practical concern is memory exhaustion or degraded availability if the affected allocation/free path can be exercised repeatedly on a vulnerable system.
Researcher notes
Evidence is narrow: the record describes a resolved memory leak but gives no CVSS, CWE, proof of exploitation, or attacker prerequisites. Research should focus on whether unprivileged or common device operations can trigger repeated domain attach/free cycles on real affected builds.
Mitigation direction
- Identify systems running kernels with the sprd IOMMU driver enabled or loaded.
- Check Linux stable or downstream vendor guidance for builds containing the referenced fixes.
- Upgrade affected systems to a vendor-supported kernel that includes the DMA buffer release fix.
- Monitor memory pressure on potentially affected systems until patched.
Validation and detection
- Confirm the running kernel version and downstream vendor patch level.
- Check whether the sprd IOMMU driver is built, loaded, or used on the system.
- Review kernel source or package changelog for the referenced stable commits.
- Run normal regression tests for IOMMU-dependent workloads after updating.
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-2023-53801 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
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
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.
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/92c089a931fd3939cd32318cf4f54e69e8f51a19CVE reference, Linux
- https://git.kernel.org/stable/c/8745f3592ee4a7b49ede16ddd3f12a41ecaa23c9CVE reference, Linux
- https://git.kernel.org/stable/c/d0a917fd5e3b3ed9d9306b4260ba684b982da9f3CVE reference, Linux
- https://git.kernel.org/stable/c/9afea57384d4ae7b2034593eac7fa76c7122762aCVE 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.