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.

Metrics

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No CVSS v3.1

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No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

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Fixes

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References
Link Providers
https://git.kernel.org/stable/c/264676418b726baca7be49171e306b6aa05cceb0 cve-icon cve-icon
https://git.kernel.org/stable/c/423574feaed192063ef0cd0813fb85425f39e539 cve-icon cve-icon
https://git.kernel.org/stable/c/4520d673d49dabfd42c008a33889251025f7d6d5 cve-icon cve-icon
https://git.kernel.org/stable/c/6c017ab2b0e1b60b5be94636c94720347213d78b cve-icon cve-icon
https://git.kernel.org/stable/c/737c928ff5092d7e55128a232c231248fc993777 cve-icon cve-icon
https://git.kernel.org/stable/c/911190f0b9511c3c81f2f2484414c1ae26f636b3 cve-icon cve-icon
https://git.kernel.org/stable/c/d6158333d630a1b21d8914feaf77a6f5deb185d9 cve-icon cve-icon
https://git.kernel.org/stable/c/ff6d1ba247b5c62bdb678f1069abc86ad88a1402 cve-icon cve-icon
History

Fri, 25 Sep 2026 17:45:00 +0000

Type Values Removed Values Added
Weaknesses CWE-772

Fri, 25 Sep 2026 13:30:00 +0000

Type Values Removed Values Added
Description 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.
Title staging: rtl8723bs: fix mismatched free of HalData in rtw_sdio_if1_init()
First Time appeared Linux
Linux linux Kernel
CPEs cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Vendors & Products Linux
Linux linux Kernel
References

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: Linux

Published:

Updated: 2026-09-25T13:06:50.521Z

Reserved: 2026-09-25T10:25:14.321Z

Link: CVE-2026-98160

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-09-25T14:17:27.627

Modified: 2026-09-25T14:17:27.627

Link: CVE-2026-98160

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-09-25T17:30:16Z

Weaknesses