From: Yi Cong <yicong@kylinos.cn>
This small series fixes four memory-safety / resource-management bugs in
the rtl8723bs SDIO staging driver.
v3:
- Add tag "Assisted-by" for each patch.
v2:
- Remove some redundant comments in patch 2 and patch 3.
v1:
- https://lore.kernel.org/all/20260729022509.2863634-1-cong.yi@linux.dev/
All four are tagged:
Fixes: 554c0a3abf21 ("staging: Add rtl8723bs sdio wifi driver")
1/4 - kfree() used on a vzalloc() allocation (HalData) in the probe
error path.
2/4 - double free / UAF when register_netdev() fails: the error label
frees objects that the caller also frees.
3/4 - NULL deref in c2h_wk_callback() when the re-read allocation under
memory pressure fails.
4/4 - NULL deref on a bcmc station lookup in the 802.11 defrag path,
reachable from a fragment with an unknown transmitter address.
Yi Cong (4):
staging: rtl8723bs: free HalData with vfree, not kfree
staging: rtl8723bs: fix double free when register_netdev() fails
staging: rtl8723bs: fix NULL deref in c2h_wk_callback() on alloc
failure
staging: rtl8723bs: fix NULL deref on bcmc station lookup in defrag
path
drivers/staging/rtl8723bs/core/rtw_cmd.c | 3 ++-
drivers/staging/rtl8723bs/core/rtw_recv.c | 5 ++++-
drivers/staging/rtl8723bs/os_dep/os_intfs.c | 14 ++------------
drivers/staging/rtl8723bs/os_dep/sdio_intf.c | 2 +-
4 files changed, 9 insertions(+), 15 deletions(-)
--
2.25.1