[PATCH v2 0/4] staging: rtl8723bs: fix several memory-safety bugs

[Yi Cong]

From: Yi Cong <yicong@xxxxxxxxxx>

This small series fixes four memory-safety / resource-management bugs in
the rtl8723bs SDIO staging driver.

v2:
 - Remove some redundant comments in patch 2 and patch 3.

v1:
 - https://lore.kernel.org/all/20260729022509.2863634-1-cong.yi@xxxxxxxxx/

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