In the Linux kernel, the following vulnerability has been resolved: staging: rtl8723bs: fix stainfo check in rtw_aes_decrypt The null-pointer-guard… (CVE-2026-72490)
A vulnerability in the Linux kernel's staging driver for rtl8723bs was fixed by correcting a null-pointer guard in the rtw_aes_decrypt function. The original guard incorrectly returned failure on valid pointers and was inverted to return failure only on invalid pointers. This fix addresses a logic error in pointer validation within the driver code.
AI Analysis
Technical Summary
The Linux kernel staging driver for rtl8723bs contained a flaw in the rtw_aes_decrypt function where the null-pointer guard was implemented incorrectly. Instead of failing on invalid pointers, it failed on valid pointers, potentially causing incorrect behavior. The vulnerability was resolved by inverting the guard logic to correctly return failure only when the pointer is invalid.
Potential Impact
The impact involves incorrect handling of pointers in the AES decryption routine of the rtl8723bs driver, which could lead to functional errors or instability in the affected driver. No specific exploitation details or broader system impact are provided.
Mitigation Recommendations
A fix has been applied to the Linux kernel staging rtl8723bs driver to correct the null-pointer guard logic. Users should update to the fixed kernel version containing this patch. No additional mitigation steps are indicated.
In the Linux kernel, the following vulnerability has been resolved: staging: rtl8723bs: fix stainfo check in rtw_aes_decrypt The null-pointer-guard… (CVE-2026-72490)
Description
A vulnerability in the Linux kernel's staging driver for rtl8723bs was fixed by correcting a null-pointer guard in the rtw_aes_decrypt function. The original guard incorrectly returned failure on valid pointers and was inverted to return failure only on invalid pointers. This fix addresses a logic error in pointer validation within the driver code.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The Linux kernel staging driver for rtl8723bs contained a flaw in the rtw_aes_decrypt function where the null-pointer guard was implemented incorrectly. Instead of failing on invalid pointers, it failed on valid pointers, potentially causing incorrect behavior. The vulnerability was resolved by inverting the guard logic to correctly return failure only when the pointer is invalid.
Potential Impact
The impact involves incorrect handling of pointers in the AES decryption routine of the rtl8723bs driver, which could lead to functional errors or instability in the affected driver. No specific exploitation details or broader system impact are provided.
Mitigation Recommendations
A fix has been applied to the Linux kernel staging rtl8723bs driver to correct the null-pointer guard logic. Users should update to the fixed kernel version containing this patch. No additional mitigation steps are indicated.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-w4pw-r5h6-2975
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-72490"]
Threat ID: 6a808b6cbf8831d5394f87f9
Added to database: 08/15/2026, 15:53:16 UTC
Last enriched: 08/15/2026, 16:18:27 UTC
Last updated: 09/30/2026, 06:54:41 UTC
Views: 23
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