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CVE Record

CVE-2025-37755: net: libwx: handle page_pool_dev_alloc_pages error

In the Linux kernel, the following vulnerability has been resolved: net: libwx: handle page_pool_dev_alloc_pages error page_pool_dev_alloc_pages could return NULL. There was a WARN_ON(!page) but it would still proceed to use the NULL pointer and then crash. This is similar to commit 001ba0902046 ("net: fec: handle page_pool_dev_alloc_pages error"). This is found by our static analysis tool KNighter.

HighCVSS 7.5Not KEV-listedUpdated
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Glexia's TakeAutomated analysishigh

Security readout for executives and security teams

Plain-English summary

A Linux network-driver error can crash an affected system when a memory-page allocation fails. The documented impact is loss of availability, not data theft or modification. Business risk is concentrated in systems that use the affected libwx networking code.

Executive priority

Treat as an expedited availability risk for critical or externally reachable Linux systems using libwx. Confirm actual driver use before emergency action, then patch through supported distribution channels. The supplied evidence does not justify claims of active attacks or confidentiality impact.

Technical view

The libwx receive path failed to stop when page_pool_dev_alloc_pages returned NULL. Despite a warning check, execution continued and dereferenced the NULL page, causing a kernel crash. The issue was found through static analysis and resolved by referenced Linux stable commits.

Likely exposure

Potential exposure includes systems running listed affected Linux releases from 6.3 through 6.15 that use the libwx networking code. The supplied version data includes an unexplained “0” entry and does not map each release to a fixing commit, so distribution-specific status must be confirmed.

Exploitation context

The CVSS 3.1 score is 7.5 with network reachability, low complexity, and availability-only impact. The bundle does not establish how a remote party would force the allocation failure. KEV is false, and no supplied source reports active exploitation or a public exploit.

Researcher notes

The failure condition is a NULL return from page_pool_dev_alloc_pages followed by continued use. Source material identifies five stable commits but provides no branch-to-commit mapping here. The affected-version list is ambiguous, so authoritative distribution advisories and package backport records are necessary for precise exposure decisions.

Mitigation direction

  • Install a vendor-supported kernel containing the applicable referenced stable fix.
  • Check distribution security guidance for corrected package versions and backports.
  • Prioritize exposed or availability-critical systems that actively use libwx networking.
  • Use redundancy and recovery controls until affected kernels can be updated.

Validation and detection

  • Inventory kernel versions and compare them with vendor-specific affected and fixed package information.
  • Determine whether each system loads or depends on the libwx networking code.
  • Confirm installed kernel sources or package changelogs contain the applicable fixing commit.
  • Review kernel logs for related allocation warnings, NULL dereferences, panics, or unexpected reboots.
  • After updating, verify the corrected kernel is running and networking remains stable.
Prepared
Confidence
medium
Sources
7

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

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CVE-2025-37755 mapping review

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Vulnerability profileCVE Program record
Severity
High
CVSS
7.5 (3.1)
Known Exploited
No
Published

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

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.

1CVSS vectors
3Timeline events
0ADP providers
6Source links

CVSS vector scores

1 official score

We 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.

ScoreVersionSeverityVectorExploitImpactSource
7.5CVSS 3.1HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H3.93.6Linux

Vulnerability scoring details

Base CVSS 3.1 score

7.5High
CVSS 3.1 vector shape for CVE-2025-37755Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector
NetworkAdjacentLocalPhysical
Attack Complexity
LowHigh
Privileges Required
NoneLowHigh
User Interaction
NoneRequired
Scope
ChangedUnchanged
Confidentiality Impact
HighLowNone
Integrity Impact
HighLowNone
Availability Impact
HighLowNone

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
LinuxLinux3c47e8ae113a68da47987750d9896e325d0aeedd, 3c47e8ae113a68da47987750d9896e325d0aeedd, 3c47e8ae113a68da47987750d9896e325d0aeedd, 3c47e8ae113a68da47987750d9896e325d0aeedd, 3c47e8ae113a68da47987750d9896e325d0aeeddunaffected
LinuxLinux6.3, 0, 6.6.88, 6.12.24, 6.13.12, 6.14.3, 6.15affected
Weakness

CWE details

No CWE listed

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