CVE-2026-98160

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.

• CWE-763

• https://git.kernel.org/stable/c/264676418b726baca7be49171e306b6aa05cceb0Patch
• https://git.kernel.org/stable/c/423574feaed192063ef0cd0813fb85425f39e539Patch
• https://git.kernel.org/stable/c/4520d673d49dabfd42c008a33889251025f7d6d5Patch
• https://git.kernel.org/stable/c/6c017ab2b0e1b60b5be94636c94720347213d78bPatch
• https://git.kernel.org/stable/c/737c928ff5092d7e55128a232c231248fc993777Patch
• https://git.kernel.org/stable/c/911190f0b9511c3c81f2f2484414c1ae26f636b3Patch
• https://git.kernel.org/stable/c/d6158333d630a1b21d8914feaf77a6f5deb185d9Patch
• https://git.kernel.org/stable/c/ff6d1ba247b5c62bdb678f1069abc86ad88a1402Patch

Published

Sep 25, 2026

Last Modified

Oct 19, 2026

Status

Analyzed

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