Security readout for executives and security teams
Plain-English summary
A Linux kernel flaw can crash affected s390 systems when a PCI device is unexpectedly removed. The kernel may retain and use invalid memory while changing the device’s IOMMU domain. The supplied assessment rates it high severity, but exposure depends on the s390 architecture and surprise PCI hot-unplug conditions.
Executive priority
Prioritize affected s390 systems that permit local untrusted access or operational PCI hot-unplug. Remediate through supported kernel updates on a high-priority schedule. Other architectures are not identified as affected in the supplied evidence, so validate scope before broader emergency action.
Technical view
During surprise PCI hot-unplug, attaching the default IOMMU domain can fail because the platform no longer recognizes the removed device. The resulting NULL domain pointer and use-after-free condition can crash the kernel. The referenced correction implements a blocking domain that safely handles the removed device, although the source notes a remaining warning.
Likely exposure
Likely exposure is limited to affected Linux kernel versions on s390 systems where PCI devices can be surprise hot-unplugged. The supplied CVSS vector describes a local, low-complexity attack requiring low privileges and no user interaction. Exact distribution-specific exposure is not established by the bundle.
Exploitation context
The supplied record does not list this CVE in KEV and provides no evidence of active exploitation or a public exploit. A crash is documented; broader confidentiality and integrity consequences are represented in the 7.8 CVSS assessment but are not demonstrated in the supplied sources.
Researcher notes
CWE-416 applies. The failure path begins when default-domain attachment cannot recognize an already removed PCI device, leaving unsafe domain state. The blocking domain prevents the documented use-after-free crash. The source acknowledges a warning remains when DMA ownership changes are attempted on the blocked device; its security significance is not established.
Mitigation direction
- Check the system or distribution vendor’s advisory for affected and corrected kernel packages.
- Apply a vendor-supported kernel containing the referenced s390 IOMMU blocking-domain correction.
- Restrict unnecessary local access to affected s390 systems until remediation is complete.
- Avoid surprise PCI hot-unplug where operationally feasible pending remediation.
Validation and detection
- Inventory Linux kernel versions and identify systems using the s390 architecture.
- Compare installed kernels with vendor advisories and the referenced stable kernel commits.
- Confirm the remediated kernel is running after installation and reboot.
- Review kernel logs for IOMMU, PCI hot-unplug, NULL-pointer, or use-after-free warnings.
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
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-2024-53232 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
- 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
2 official scoresWe 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:H1.85.9LinuxCVSS: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
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/3be34fa1cdbf180c1a948cfededfdf2cdc497199CVE reference, Linux
- https://git.kernel.org/stable/c/bd89d94f3ea6fdaee983cbc69226a00b9bde6d59CVE reference, Linux
- https://git.kernel.org/stable/c/ecda483339a5151e3ca30d6b82691ef6f1d17912CVE 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.