Security readout for executives and security teams
Plain-English summary
A Linux network-switch driver can trust an invalid hardware interface identifier and read beyond an internal ports array during interrupt processing. Systems using the DPAA2 switch driver may crash or expose adjacent kernel memory. The supplied assessment rates it high severity, but exploitation requires local access, privileges, and difficult conditions.
Executive priority
Treat as a targeted high-priority kernel update for DPAA2-based networking systems, not an estate-wide emergency. Inventory affected appliances and hosts promptly, then patch through supported vendor channels. Escalate systems allowing untrusted local users or providing critical network services. No active exploitation is established by the supplied evidence.
Technical view
The dpaa2-switch IRQ handler extracts a 16-bit if_id from a hardware status register and indexes ethsw->ports[] without confirming it is below sw_attr.num_ifs. Values up to 65535 can therefore cause an out-of-bounds read in kernel interrupt context. The stable fixes add the missing bounds check, matching existing receive-path validation.
Likely exposure
Exposure is limited to Linux systems running an affected kernel with the DPAA2 switch driver and relevant hardware active. The supplied record lists affected versions across several stable branches, but its version data is insufficient to define every vulnerable build reliably. General Linux installations without this driver or hardware are unlikely to be exposed.
Exploitation context
The CVSS vector indicates a local, low-privilege, high-complexity path without user interaction. CISA KEV status is false, and the supplied sources provide no evidence of active exploitation or a public exploit. Although the CVSS impact metrics are high, the description specifically establishes only a potential out-of-bounds read.
Researcher notes
The fix checks if_id before ethsw->ports[] access in interrupt context. The source bundle repeats one hash and provides ambiguous affected-version boundaries, so distribution-specific backport status must be verified. Do not infer exploitability beyond the documented potential read; the bundle contains no crash trace, proof of concept, root-cause reachability analysis, or demonstrated confidentiality, integrity, or availability outcome.
Mitigation direction
- Identify systems using the DPAA2 switch driver and affected kernel branches.
- Install a vendor-supported kernel containing the applicable upstream stable fix.
- Prioritize exposed multi-user or appliance systems where local access is less controlled.
- If immediate updating is impossible, consult vendor guidance about safely disabling unused DPAA2 switch functionality.
Validation and detection
- Record each system's kernel build, distribution, hardware platform, and loaded driver state.
- Confirm whether the dpaa2-switch driver and relevant DPAA2 switch hardware are active.
- Compare vendor kernel changelogs against CVE-2026-23180 or the supplied stable commits.
- After updating, verify the running kernel includes the bounds-check fix.
- Monitor kernel logs for DPAA2 switch faults or unexplained crashes.
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-2026-23180 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 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:L/AC:H/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.
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:H/PR:L/UI:N/S:U/C:H/I:H/A:H15.9LinuxVulnerability scoring details
Base CVSS 3.1 score
7HighVector: CVSS:3.1/AV:L/AC:H/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.
Source materials
- CVE List V5 sourceCVE List V5
- https://git.kernel.org/stable/c/77611cab5bdfff7a070ae574bbfba20a1de99d1bCVE reference, Linux
- https://git.kernel.org/stable/c/34b56c16efd61325d80bf1d780d0e176be662f59CVE reference, Linux
- https://git.kernel.org/stable/c/f89e33c9c37f0001b730e23b3b05ab7b1ecface2CVE reference, Linux
- https://git.kernel.org/stable/c/2447edc367800ba914acf7ddd5d250416b45fb31CVE reference, Linux
- https://git.kernel.org/stable/c/1b381a638e1851d8cfdfe08ed9cdbec5295b18c9CVE reference, Linux
- https://git.kernel.org/stable/c/31a7a0bbeb006bac2d9c81a2874825025214b6d8CVE 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.