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CVE-2026-43159: staging: rtl8723bs: fix null dereference in find_network

• Severity: medium (CVSS 5.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.1% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-05-06 · updated 2026-06-17
• Weakness: CWE-476

Description

In the Linux kernel, the following vulnerability has been resolved: staging: rtl8723bs: fix null dereference in find_network The variable pwlan has the possibility of being NULL when passed into rtw_free_network_nolock() which would later dereference the variable.

Affected products

• Linux kernel: from 4.12 before 5.10.253; from 5.11 before 5.15.202; from 5.16 before 6.1.165; from 6.2 before 6.6.128; from 6.7 before 6.12.75; from 6.13 before 6.18.16 — fixed in 5.10.253, 5.15.202, 6.1.165, 6.12.75, 6.18.16, 6.19.6

How to fix

Upgrade to a fixed version: Linux kernel 5.10.253, 5.15.202, 6.1.165, 6.12.75. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/04d24a3654ed195485bc6346a9ef326fc494a34e
• https://git.kernel.org/stable/c/1aa9c59f4b96a9056c02476c7ca89e96d15e0645
• https://git.kernel.org/stable/c/3b1d0c9a1f78836d0bce6fdd37f596f22c19b03e
• https://git.kernel.org/stable/c/41460a19654c32d39fd0e3a3671cd8d4b7b8479f
• https://git.kernel.org/stable/c/48b4dec3a8bfd667cd0cd767eaf511176193e9a1
• https://git.kernel.org/stable/c/677490a6bd4c63acdf6f48e4aaf6a23d7e6a446f
• https://git.kernel.org/stable/c/7fa16ffed2b9d9d44940990c1f31159770769aeb
• https://git.kernel.org/stable/c/cc3f83b6fb3773ad943365d1cd774b4ec050332e

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