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CVE-2026-98160

Unknown

Last modified

CVE-2026-98160 is a vulnerability of currently unknown severity. 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.

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.

Affected Software

Source: CNA advisory (CVE.org). NVD analysis pending.

VendorProductVersions
LinuxLinux>= 554c0a3abf216c991c5ebddcdb2c08689ecd290b, < ff6d1ba247b5c62bdb678f1069abc86ad88a1402; >= 554c0a3abf216c991c5ebddcdb2c08689ecd290b, < d6158333d630a1b21d8914feaf77a6f5deb185d9; >= 554c0a3abf216c991c5ebddcdb2c08689ecd290b, < 6c017ab2b0e1b60b5be94636c94720347213d78b; >= 554c0a3abf216c991c5ebddcdb2c08689ecd290b, < 4520d673d49dabfd42c008a33889251025f7d6d5; >= 554c0a3abf216c991c5ebddcdb2c08689ecd290b, < 423574feaed192063ef0cd0813fb85425f39e539; >= 554c0a3abf216c991c5ebddcdb2c08689ecd290b, < 737c928ff5092d7e55128a232c231248fc993777; >= 554c0a3abf216c991c5ebddcdb2c08689ecd290b, < 911190f0b9511c3c81f2f2484414c1ae26f636b3; >= 554c0a3abf216c991c5ebddcdb2c08689ecd290b, < 264676418b726baca7be49171e306b6aa05cceb0
LinuxLinux4.12

References

Timeline

Published
Last Modified
Status
Received

Frequently Asked Questions

What is 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.
How severe is CVE-2026-98160?
Severity scoring for CVE-2026-98160 is pending analysis.
How do I fix CVE-2026-98160?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST