Security readout for executives and security teams
Plain-English summary
CVE-2024-46831 is a Linux kernel issue described as a use-after-free in a Microchip VCAP KUnit test. The available sources frame it as test-code cleanup, not a demonstrated production attack path. Business urgency is low unless your organization builds, tests, or maintains affected Linux kernel trees.
Executive priority
Handle through normal kernel maintenance unless internal CI or product engineering depends on affected Linux kernel test code. There is no source-backed evidence of active exploitation or a production attack path.
Technical view
The kernel fix removes a use-after-free in the Microchip VCAP KUnit test and relies on the return code from vcap_del_rule. The CVE source lists affected Linux kernel versions or commits, but provides no CVSS, CWE, exploitability details, or runtime impact beyond the KUnit test context.
Likely exposure
Exposure appears most likely in Linux kernel source trees, CI systems, or vendor kernels that include the affected Microchip VCAP KUnit test code. The provided evidence does not establish remote, local privilege, or production runtime exposure.
Exploitation context
The source bundle does not report active exploitation, and KEV is false. No cited source describes public exploit code, attacker prerequisites, or weaponized behavior. Treat exploitation context as unproven based on current evidence.
Researcher notes
The CVE record is sparse. The strongest evidence is the kernel description: a clear use-after-free in a KUnit test fixed by removing the unsafe behavior. Additional impact analysis would require reviewing the linked commits and vendor backport status.
Mitigation direction
- Update affected Linux kernel trees to include the referenced stable fixes.
- Follow your Linux distribution or device vendor advisory for packaged kernels.
- Prioritize kernel CI and source-maintenance environments using KUnit tests.
- Do not infer network exposure without vendor evidence.
Validation and detection
- Inventory Linux kernel versions and source commits in maintained builds.
- Check whether referenced stable commits are present in your kernel tree.
- Review distro or vendor advisories for backported fixes.
- Confirm whether Microchip VCAP KUnit tests run in CI.
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-2024-46831 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.
SSVC decision data
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/b0804c286ccfcf5f5c004d5bf8a54c0508b5e86bCVE reference, Linux
- https://git.kernel.org/stable/c/f7fe95f40c85311c98913fe6ae2c56adb7f767a7CVE reference, Linux
- https://git.kernel.org/stable/c/a3c1e45156ad39f225cd7ddae0f81230a3b1e657CVE 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.