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CVE-2025-39858

eth: mlx4: Fix IS_ERR() vs NULL check bug in mlx4_en_create_rx_ring

MEDIUM
5.5
CVSS Score
Published: September 19, 2025 at 03:26 PM UTC
Updated: October 19, 2026 at 09:10 PM UTC
1 product affected across 1 vendorLinux Kernel

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Severity
MEDIUM5.5
Exploit prediction
EPSS 0.1%
SSVC
No known exploit

Description

In the Linux kernel, the following vulnerability has been resolved: eth: mlx4: Fix IS_ERR() vs NULL check bug in mlx4_en_create_rx_ring Replace NULL check with IS_ERR() check after calling page_pool_create() since this function returns error pointers (ERR_PTR). Using NULL check could lead to invalid pointer dereference.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Linux Kernel· Linux
95%
6.15 ≤ v < 6.16.66.156.176.17 rc16.17 rc26.17 rc36.17 rc48533b14b3d65ee666ba31254787c1bdaee56d95a
Vendor states this is fixed in 7b77d8841a98a9f45c8a615222c698df8dec581c (fixed)
Vendor states this is fixed in e580beaf43d563aaf457f1c7f934002355ebfe7b (fixed)
Vendor states this is fixed in 6.15 (unaffected)
Vendor states this is fixed in 6.16.6 (unaffected)
Vendor states this is fixed in 6.17 (unaffected)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (2)

Patch
Source: cverecord
https://git.kernel.org/stable/c/7b77d8841a98a9f45c8a615222c698df8dec581c
Patch
Source: cverecord
https://git.kernel.org/stable/c/e580beaf43d563aaf457f1c7f934002355ebfe7b

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

5.5MEDIUMCISA-ADP
Attack Vector
LOCAL
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-476

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