Bug 2402210 (CVE-2022-50513)

Summary: CVE-2022-50513 kernel: staging: rtl8723bs: fix a potential memory leak in rtw_init_cmd_priv()
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
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OS: Linux   
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Description OSIDB Bzimport 2025-10-07 16:02:58 UTC 
In the Linux kernel, the following vulnerability has been resolved:

staging: rtl8723bs: fix a potential memory leak in rtw_init_cmd_priv()

In rtw_init_cmd_priv(), if `pcmdpriv->rsp_allocated_buf` is allocated
in failure, then `pcmdpriv->cmd_allocated_buf` will be not properly
released. Besides, considering there are only two error paths and the
first one can directly return, so we do not need implicitly jump to the
`exit` tag to execute the error handler.

So this patch added `kfree(pcmdpriv->cmd_allocated_buf);` on the error
path to release the resource and simplified the return logic of
rtw_init_cmd_priv(). As there is no proper device to test with, no runtime
testing was performed.
Comment 1 Jon Moroney 2025-10-07 18:33:08 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025100702-CVE-2022-50513-8fee@gregkh/T