Security readout for executives and security teams
Plain-English summary
CVE-2025-22024 is a Linux kernel NFS server flaw that can crash or disrupt service after listener management is changed in a specific state. The impact is availability, not data theft or privilege escalation based on the supplied sources.
Executive priority
Treat as a routine but real availability risk for NFS infrastructure. Patch through normal kernel maintenance, prioritizing systems where NFS outages would affect production workloads.
Technical view
The bug is a use-after-free in nfsd listener transport management. Removing a listener while no nfsd threads are active can leave another transport list stale, causing refcount warnings and failure when nfsd starts again.
Likely exposure
Linux systems running affected kernel versions with the NFS server enabled are the main concern. The described trigger involves local privileged nfsdctl-style management of NFS listeners, so exposure is more operational than internet-facing.
Exploitation context
The source bundle does not show active exploitation, and KEV is false. The described scenario is local and administrative, tied to NFS listener removal and subsequent server startup.
Researcher notes
Evidence supports CWE-416 and CVSS 5.5 with local access and high availability impact. The source describes the faulty list handling and the fix approach, but distro-specific affected ranges require vendor confirmation.
Mitigation direction
- Apply Linux kernel stable or distribution updates containing the referenced nfsd fixes.
- Prioritize NFS server hosts and appliances built on affected Linux kernels.
- Limit local administrative access to NFS service management until patched.
- Check vendor advisories for exact distro package versions and backports.
Validation and detection
- Inventory Linux hosts running nfsd or exporting NFS shares.
- Map kernel builds to vendor advisories or the referenced stable commits.
- Review kernel logs for refcount or use-after-free warnings around nfsd.
- Confirm NFS listener management behaves normally 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.
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-2025-22024 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/a84c80515ca8a0cdf6d06f1b6ca721224b08453eCVE reference, Linux
- https://git.kernel.org/stable/c/052a34f093fb940a145493d1438e7abbfe507cddCVE reference, Linux
- https://git.kernel.org/stable/c/0f42df0ab2b11ea6b2884bdaf6dbc3be6dde7e82CVE reference, Linux
- https://git.kernel.org/stable/c/d093c90892607be505e801469d6674459e69ab89CVE 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.