Security readout for executives and security teams
Plain-English summary
CVE-2023-53581 is a Linux kernel bug in the mlx5e network driver. A race condition can cause double removal of an internal flow entry and crash the system. Business impact is mainly availability risk on hosts using affected Mellanox/NVIDIA mlx5 networking features.
Executive priority
Treat as a targeted availability issue, not a broad internet-facing emergency based on current evidence. Prioritize network-intensive Linux hosts using mlx5 adapters, especially production virtualization, storage, or cloud nodes where a kernel crash has high operational impact.
Technical view
The issue is in net/mlx5e flow deletion handling. The NOT_READY flag was checked before taking uplink_priv->unready_flows_lock, allowing concurrent workqueue removal from unready_flows and a later double-removal. The kernel fix moves the flag check inside the mutex-protected section.
Likely exposure
Exposure appears limited to Linux systems using the mlx5/mlx5e driver with relevant traffic-control offload flow handling. Generic Linux hosts without this driver or feature path are less likely exposed. Confirm against kernel version, enabled modules, hardware, and distribution backports.
Exploitation context
The source describes a crash triggered through a race during flow removal. It includes a kernel trace involving tc/netlink, but does not document public exploitation. CISA KEV status is false in the provided data.
Researcher notes
No CVSS, CWE, or active exploitation evidence is provided. The affected-version data is incomplete in the bundle; use the upstream commits and distribution advisories to map exact exposure. The described impact is kernel crash from a locking race, with no source-backed privilege-escalation claim.
Mitigation direction
- Update to a vendor kernel containing the referenced stable fixes.
- Check distribution advisories for backported fixes before relying on upstream version numbers.
- If updating is delayed, review vendor guidance for mlx5e or TC offload workarounds.
- Prioritize systems using mlx5 hardware and traffic-control offload features.
Validation and detection
- Inventory Linux kernels and identify mlx5/mlx5e module usage.
- Check whether installed kernels include the referenced upstream stable commits.
- Review crash logs for mlx5e_tc_del_fdb_flow or unready_flows-related traces.
- Confirm remediation using vendor package changelogs or kernel commit metadata.
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-2023-53581 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/30c281a77fb1b2d362030ea243dd663201d62a21CVE reference, Linux
- https://git.kernel.org/stable/c/82ac62d76a000871004f534ad294e763e966d3b0CVE reference, Linux
- https://git.kernel.org/stable/c/e962fd5933ebc767ce2a1cf7b7c85035b5a5d04cCVE reference, Linux
- https://git.kernel.org/stable/c/f7ceedd1d124217a67ed1a67bbd7a7b1288705e3CVE reference, Linux
- https://git.kernel.org/stable/c/65e64640e97c0f223e77f9ea69b5a46186b93470CVE 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.