Security readout for executives and security teams
Plain-English summary
This is a Linux kernel KVM memory leak bug. If part of KVM coalesced MMIO cleanup fails, the kernel may leave an allocated device object behind. The source does not show code execution, privilege escalation, or active exploitation. Business urgency is mainly for Linux virtualization hosts that expose or rely on KVM.
Executive priority
Treat as routine kernel hygiene unless you operate shared or multi-tenant KVM infrastructure. There is no supplied evidence of active exploitation or severe impact, but unpatched virtualization hosts should still move through normal kernel update cycles.
Technical view
The resolved flaw is in KVM coalesced MMIO handling. kvm_io_bus_unregister_dev() may fail without destroying the target device, and the old path did not free that object. The supplied trace shows a leak from kvm_vm_ioctl_register_coalesced_mmio() through KVM VM ioctl handling. Stable kernel commits implement cleanup when unregistration fails.
Likely exposure
Most relevant to Linux systems using KVM virtualization, especially hosts on affected kernel branches or unpatched downstream builds. The source bundle lists Linux as affected and provides fixed stable commits, but does not identify specific distributions or packaged kernel versions.
Exploitation context
The record is not in KEV, and the supplied sources do not claim active exploitation. Evidence is a syzkaller-style memory leak report and kernel fix references. The bundle does not establish remote reachability, privilege requirements, or a practical denial-of-service threshold.
Researcher notes
Analysis should focus on the failure path in coalesced MMIO registration and whether downstream trees backported the cleanup. The source bundle only supports a memory leak conclusion; avoid expanding impact without vendor or kernel maintainer evidence.
Mitigation direction
- Apply Linux kernel updates containing the referenced stable KVM fix.
- Check your distribution kernel advisory for CVE-2023-54024 coverage.
- Prioritize KVM virtualization hosts and systems allowing VM management access.
- Track vendor guidance if running custom or long-term kernel builds.
Validation and detection
- Inventory Linux kernel versions on KVM-capable hosts.
- Confirm whether installed kernels include one of the referenced stable commits.
- Review distro CVE notes for fixed package versions.
- Check whether KVM modules and VM management interfaces are in use.
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-2023-54024 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/10c2a20d73e99463e69b7e92706791656adc16d7CVE reference, Linux
- https://git.kernel.org/stable/c/76a9886e1b61ce5592df5ae78a19ed30399ae189CVE reference, Linux
- https://git.kernel.org/stable/c/999439fd5da5a76253e2f2c37b94204f47d75491CVE reference, Linux
- https://git.kernel.org/stable/c/ccf6a7fb1aedb1472e1241ee55e4d26b68f8d066CVE reference, Linux
- https://git.kernel.org/stable/c/fb436dd6914325075f07d19851ab277b7a693ae7CVE reference, Linux
- https://git.kernel.org/stable/c/b1cb1fac22abf102ffeb29dd3eeca208a3869d54CVE 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.