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 products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Linux Linux
Default version status: unaffected
554c0a3abf216c991c5ebddcdb2c08689ecd290b to < ff6d1ba247b5c62bdb678f1069abc86ad88a1402affected554c0a3abf216c991c5ebddcdb2c08689ecd290b to < d6158333d630a1b21d8914feaf77a6f5deb185d9affected554c0a3abf216c991c5ebddcdb2c08689ecd290b to < 6c017ab2b0e1b60b5be94636c94720347213d78baffected554c0a3abf216c991c5ebddcdb2c08689ecd290b to < 4520d673d49dabfd42c008a33889251025f7d6d5affected554c0a3abf216c991c5ebddcdb2c08689ecd290b to < 423574feaed192063ef0cd0813fb85425f39e539affected554c0a3abf216c991c5ebddcdb2c08689ecd290b to < 737c928ff5092d7e55128a232c231248fc993777affected554c0a3abf216c991c5ebddcdb2c08689ecd290b to < 911190f0b9511c3c81f2f2484414c1ae26f636b3affected554c0a3abf216c991c5ebddcdb2c08689ecd290b to < 264676418b726baca7be49171e306b6aa05cceb0affected
Linux Linux
Default version status: affected
4.12affected0 to < 4.12unaffected5.10.270 to ≤ 5.10.*unaffected5.15.221 to ≤ 5.15.*unaffected6.1.188 to ≤ 6.1.*unaffected6.6.157 to ≤ 6.6.*unaffected6.12.110 to ≤ 6.12.*unaffected6.18.52 to ≤ 6.18.*unaffected7.2.6 to ≤ 7.2.*unaffected7.3 to ≤ *unaffected
References
- https://git.kernel.org/stable/c/ff6d1ba247b5c62bdb678f1069abc86ad88a1402 ↗
- https://git.kernel.org/stable/c/d6158333d630a1b21d8914feaf77a6f5deb185d9 ↗
- https://git.kernel.org/stable/c/6c017ab2b0e1b60b5be94636c94720347213d78b ↗
- https://git.kernel.org/stable/c/4520d673d49dabfd42c008a33889251025f7d6d5 ↗
- https://git.kernel.org/stable/c/423574feaed192063ef0cd0813fb85425f39e539 ↗
- https://git.kernel.org/stable/c/737c928ff5092d7e55128a232c231248fc993777 ↗
- https://git.kernel.org/stable/c/911190f0b9511c3c81f2f2484414c1ae26f636b3 ↗
- https://git.kernel.org/stable/c/264676418b726baca7be49171e306b6aa05cceb0 ↗