CVE-2026-98160Medium· 5.5▾ SunlitIn the Linux kernel, the following vulnerability has been resolved: staging: rtl8723bs: fix mismatched free of HalData in rtw_sdio_if1_init() padapter->HalData is allocated via vzalloc(), but incorrectly freed using kfree() in the rtw_…
▾ Sunlit zone — Low / medium · no exploitation signal
impact 30.3 · likelihood 0 · exploitation 0
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Exploit-prediction probability, daily snapshots since Sep 27.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via NVD
0.2%
— → 5.5
none → medium
Last analysed / modified upstream
In the Linux kernel, the following vulnerability has been resolved:
staging: rtl8723bs: fix mismatched free of HalData in rtw_sdio_if1_init()
padapter->HalData is allocated via vzalloc(), but incorrectly freed using kfree() in the rtw_sdio_if1_init() error path. Using kfree() to release this vmalloc-backed buffer can lead to memory corruption.
Use rtw_hal_data_deinit() to pair the free correctly and free HalData with vfree().
The bug was first flagged by an experimental static analysis tool we are developing for kernel memory-management bugs. Manual inspection confirms that the issue is still present in current mainline.
An x86_64 allyesconfig build showed no new warnings. As we do not have suitable RTL8723BS SDIO hardware to test with, no runtime testing was able to be performed.
linux_kernel >= 4.12, < 5.10.270linux_kernel >= 5.11, < 5.15.221linux_kernel >= 5.16, < 6.1.188linux_kernel >= 6.2, < 6.6.157linux_kernel >= 6.7, < 6.12.110linux_kernel >= 6.13, < 6.18.52linux_kernel >= 6.19, < 7.2.6Upgrade past the affected range:
linux_kernel 7.2.6Field changes observed since this record was first indexed.
Connected by shared product, vendor, weakness, or advisory.
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