What’s Vulnerable › Vulnerabilities

CVE-2026-46305: staging: rtl8723bs: os_dep: avoid NULL pointer dereference in rtw_cbuf_alloc

• 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: 2026-06-08 · updated 2026-09-14
• Weakness: CWE-476

Description

In the Linux kernel, the following vulnerability has been resolved: staging: rtl8723bs: os_dep: avoid NULL pointer dereference in rtw_cbuf_alloc The return value of kzalloc_flex() is used without ensuring that the allocation succeeded, and the pointer is dereferenced unconditionally. Guard the access to the allocated structure to avoid a potential NULL pointer dereference if the allocation fails.

Affected products

• Linux kernel: from 7.0 before 7.0.7; 7.1-rc1, 7.1-rc2 — fixed in 7.0.7

How to fix

Upgrade to a fixed version: Linux kernel 7.0.7. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/0a5f411becfb7c57aa89827213d31ef23a03d75a
• https://git.kernel.org/stable/c/7d4024037ee309a8f0cb86b4093d59da0e135db8
• https://git.kernel.org/stable/c/bc851db06045a40c18233dd76ef0562d7f8bb6db

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