{"id":"CVE-2026-98160","summary":"staging: rtl8723bs: fix mismatched free of HalData in rtw_sdio_if1_init()","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nstaging: rtl8723bs: fix mismatched free of HalData in rtw_sdio_if1_init()\n\npadapter-\u003eHalData is allocated via vzalloc(), but incorrectly freed\nusing kfree() in the rtw_sdio_if1_init() error path. Using kfree() to\nrelease this vmalloc-backed buffer can lead to memory corruption.\n\nUse rtw_hal_data_deinit() to pair the free correctly and free\nHalData with vfree().\n\nThe bug was first flagged by an experimental static analysis tool we\nare developing for kernel memory-management bugs. Manual inspection\nconfirms that the issue is still present in current mainline.\n\nAn x86_64 allyesconfig build showed no new warnings. As we do not have\nsuitable RTL8723BS SDIO hardware to test with, no runtime testing was\nable to be performed.","modified":"2026-09-27T03:47:35.277067575Z","published":"2026-09-25T13:06:50.521Z","database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/98xxx/CVE-2026-98160.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/264676418b726baca7be49171e306b6aa05cceb0"},{"type":"WEB","url":"https://git.kernel.org/stable/c/423574feaed192063ef0cd0813fb85425f39e539"},{"type":"WEB","url":"https://git.kernel.org/stable/c/4520d673d49dabfd42c008a33889251025f7d6d5"},{"type":"WEB","url":"https://git.kernel.org/stable/c/6c017ab2b0e1b60b5be94636c94720347213d78b"},{"type":"WEB","url":"https://git.kernel.org/stable/c/737c928ff5092d7e55128a232c231248fc993777"},{"type":"WEB","url":"https://git.kernel.org/stable/c/911190f0b9511c3c81f2f2484414c1ae26f636b3"},{"type":"WEB","url":"https://git.kernel.org/stable/c/d6158333d630a1b21d8914feaf77a6f5deb185d9"},{"type":"WEB","url":"https://git.kernel.org/stable/c/ff6d1ba247b5c62bdb678f1069abc86ad88a1402"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/98xxx/CVE-2026-98160.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-98160"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"554c0a3abf216c991c5ebddcdb2c08689ecd290b"},{"fixed":"ff6d1ba247b5c62bdb678f1069abc86ad88a1402"},{"fixed":"d6158333d630a1b21d8914feaf77a6f5deb185d9"},{"fixed":"6c017ab2b0e1b60b5be94636c94720347213d78b"},{"fixed":"4520d673d49dabfd42c008a33889251025f7d6d5"},{"fixed":"423574feaed192063ef0cd0813fb85425f39e539"},{"fixed":"737c928ff5092d7e55128a232c231248fc993777"},{"fixed":"911190f0b9511c3c81f2f2484414c1ae26f636b3"},{"fixed":"264676418b726baca7be49171e306b6aa05cceb0"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-98160.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"4.12.0"},{"fixed":"5.10.270"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.11.0"},{"fixed":"5.15.221"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.16.0"},{"fixed":"6.1.188"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.2.0"},{"fixed":"6.6.157"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.7.0"},{"fixed":"6.12.110"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.13.0"},{"fixed":"6.18.52"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"7.2.6"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-98160.json"}}],"schema_version":"1.9.0"}