LiveActive security incident?Get immediate response
CVE Record

CVE-2025-71137: octeontx2-pf: fix "UBSAN: shift-out-of-bounds error"

In the Linux kernel, the following vulnerability has been resolved: octeontx2-pf: fix "UBSAN: shift-out-of-bounds error" This patch ensures that the RX ring size (rx_pending) is not set below the permitted length. This avoids UBSAN shift-out-of-bounds errors when users passes small or zero ring sizes via ethtool -G.

UnknownCVSS not scoredNot KEV-listedUpdated
Discuss exposureBack to CVEs
Glexia's TakeAutomated analysisunknown

Security readout for executives and security teams

Plain-English summary

CVE-2025-71137 is a Linux kernel driver flaw where an invalid network ring size can trigger an internal undefined-behavior check. The source describes a fix, but gives no CVSS score, CWE, confirmed impact, or exploitation evidence. Treat it as a kernel maintenance issue until vendor advisories clarify severity.

Executive priority

Schedule normal kernel patching, with earlier action for systems using the affected network driver in production. Current evidence does not support emergency response, but kernel defects can carry operational risk when tied to specific hardware paths.

Technical view

The issue is in the Linux kernel octeontx2-pf driver. The RX ring size was not constrained to the permitted minimum, so small or zero ring sizes supplied through ethtool ring configuration could cause UBSAN shift-out-of-bounds errors. Stable kernel commits enforce the minimum allowed RX ring size.

Likely exposure

Exposure appears limited to Linux systems running affected kernel versions with the octeontx2-pf network driver path in use. The bundle lists Linux kernel versions as affected but does not provide distribution package names, hardware inventory guidance, or downstream vendor status.

Exploitation context

The bundle does not show CISA KEV listing, public exploitation, exploit availability, or attack preconditions. It only states that small or zero RX ring sizes passed through ethtool trigger the UBSAN condition. Do not assume remote exploitation from the provided evidence.

Researcher notes

Evidence is sparse: no CVSS, CWE, exploit status, or detailed impact is provided. Analysis should focus on the driver boundary, minimum RX ring-size enforcement, affected kernel ranges, and whether downstream vendors backported the stable commits under different package versions.

Mitigation direction

  • Apply vendor kernel updates containing the referenced stable fixes.
  • Prioritize systems using the octeontx2-pf driver or matching hardware.
  • Check Linux distribution advisories for packaged kernel backports.
  • Avoid unsupported RX ring-size settings until patched.
  • Track CVE updates for CVSS, CWE, and downstream status.

Validation and detection

  • Inventory Linux kernel versions against the affected version list.
  • Identify systems loading or built with the octeontx2-pf driver.
  • Confirm installed kernels include the referenced stable commits or vendor backports.
  • Review kernel logs for UBSAN shift-out-of-bounds reports in this driver.
  • Verify distribution advisories before declaring remediation complete.
Prepared
Confidence
medium
Sources
9

Public sources used

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

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 · low confidence lookup

CVE-2025-71137 mapping review

Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.

Open ATT&CK lookup
Vulnerability profileCVE Program record
Severity
Unknown
CVSS
Not scored
Known Exploited
No
Published
Official CVE source material

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.

0CVSS vectors
3Timeline events
0ADP providers
8Source links

Vulnerability timeline

Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.

  1. CVE reservedCVE Program

    The CVE ID was reserved by the assigning CNA.

  2. CVE publishedCVE Program

    The CVE record was published.

  3. CVE updatedCVE Program

    The CVE record metadata indicates this as the latest update time.

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
LinuxLinuxd45d8979840d9c9ac93d3fe8cfc8e794b7228445, d45d8979840d9c9ac93d3fe8cfc8e794b7228445, d45d8979840d9c9ac93d3fe8cfc8e794b7228445, d45d8979840d9c9ac93d3fe8cfc8e794b7228445, d45d8979840d9c9ac93d3fe8cfc8e794b7228445, d45d8979840d9c9ac93d3fe8cfc8e794b7228445, d45d8979840d9c9ac93d3fe8cfc8e794b7228445unaffected
LinuxLinux5.6, 0, 5.10.248, 5.15.198, 6.1.160, 6.6.120, 6.12.64, 6.18.4, 6.19affected
Weakness

CWE details

No CWE listed

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.