What’s Vulnerable › Vulnerabilities

CVE-2023-53277: wifi: iwl3945: Add missing check for create_singlethread_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: 2025-09-16 · updated 2026-06-17
• Weakness: CWE-476

Description

In the Linux kernel, the following vulnerability has been resolved: wifi: iwl3945: Add missing check for create_singlethread_workqueue Add the check for the return value of the create_singlethread_workqueue in order to avoid NULL pointer dereference.

Affected products

• Linux kernel: from 2.6.24 before 4.19.276; from 4.20 before 5.4.235; from 5.5 before 5.10.173; from 5.11 before 5.15.99; from 5.16 before 6.1.16; from 6.2 before 6.2.3 — fixed in 4.19.276, 5.10.173, 5.15.99, 5.4.235, 6.1.16, 6.2.3

How to fix

Upgrade to a fixed version: Linux kernel 4.19.276, 5.10.173, 5.15.99, 5.4.235. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/17e07d6587c55015956862ef3b101fd45fa49fbc
• https://git.kernel.org/stable/c/1fdeb8b9f29dfd64805bb49475ac7566a3cb06cb
• https://git.kernel.org/stable/c/2f80b3ff92514ebd227e5c55d3d1e480401b02b7
• https://git.kernel.org/stable/c/34f611204ae589bd5c494b10b41fb13436bd3c3f
• https://git.kernel.org/stable/c/3ae2fc4de12686f3fe695824169c1272c9f798f7
• https://git.kernel.org/stable/c/505c74c4c0b1c5bcaa98a93b3087c268156070f1
• https://git.kernel.org/stable/c/7e594abc0424e4f8c2385f11aefeaadcfc507aa5

Get alerted when CVE-2023-53277 or the next vulnerability affects your stack