What’s Vulnerable › Vulnerabilities

CVE-2025-71313: PCI: endpoint: Add missing NULL check for alloc_workqueue()

• Severity: medium (CVSS 5.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-06-03 · updated 2026-10-30
• Weakness: CWE-476

Description

In the Linux kernel, the following vulnerability has been resolved: PCI: endpoint: Add missing NULL check for alloc_workqueue() alloc_workqueue() can return NULL on memory allocation failure. Without proper error checking, this may lead to a NULL pointer dereference when queue_work() is later called with the NULL workqueue pointer in epf_ntb_epc_init(). Add a NULL check immediately after alloc_workqueue() and return -ENOMEM on failure to prevent the driver from loading with an invalid workqueue pointer.

Affected products

• Linux kernel: from 5.12 before 6.19.4 — fixed in 6.19.4
• Linux: 5.12 — fixed in 7.0

How to fix

Upgrade to a fixed version: Linux kernel 6.19.4; Linux 7.0. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/03f336a869b3a3f119d3ae52ac9723739c7fb7b6
• https://git.kernel.org/stable/c/11e78304b0113d3a122dc2c37426adc34c809645
• https://git.kernel.org/stable/c/2f62f8be57882c26f8bede0cab293d013964208f
• https://git.kernel.org/stable/c/314eab6740bcda504ef978be599f805de05ce6de
• https://git.kernel.org/stable/c/62b9e706d226329d1374c0c1b80222e75ae9d8cd
• https://git.kernel.org/stable/c/829ccfb22950c430f2bf5b40465510c210afb4d5

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