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| author | Shyam Sunder Reddy Padira <shyamsunderreddypadira@gmail.com> | 2026-04-14 10:13:06 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2026-05-04 12:36:47 +0300 |
| commit | bc851db06045a40c18233dd76ef0562d7f8bb6db (patch) | |
| tree | 61ad86d5c92befdcfa2db2908b1b668fe04a5134 | |
| parent | 32c91e8ee039777d0b95b914633fc6a42607959c (diff) | |
| download | linux-bc851db06045a40c18233dd76ef0562d7f8bb6db.tar.xz | |
staging: rtl8723bs: os_dep: avoid NULL pointer dereference in rtw_cbuf_alloc
The return value of kzalloc_flex() is used without
ensuring that the allocation succeeded, and the
pointer is dereferenced unconditionally.
Guard the access to the allocated structure to
avoid a potential NULL pointer dereference if the
allocation fails.
Fixes: 980cd426a257 ("staging: rtl8723bs: replace rtw_zmalloc() with kzalloc()")
Cc: stable <stable@kernel.org>
Signed-off-by: Shyam Sunder Reddy Padira <shyamsunderreddypadira@gmail.com>
Reviewed-by: Dan Carpenter <error27@gmail.com>
Link: https://patch.msgid.link/20260414071308.4781-2-shyamsunderreddypadira@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/staging/rtl8723bs/os_dep/osdep_service.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/staging/rtl8723bs/os_dep/osdep_service.c b/drivers/staging/rtl8723bs/os_dep/osdep_service.c index 7959daeabc6f..4cfdf7c62344 100644 --- a/drivers/staging/rtl8723bs/os_dep/osdep_service.c +++ b/drivers/staging/rtl8723bs/os_dep/osdep_service.c @@ -194,7 +194,8 @@ struct rtw_cbuf *rtw_cbuf_alloc(u32 size) struct rtw_cbuf *cbuf; cbuf = kzalloc_flex(*cbuf, bufs, size); - cbuf->size = size; + if (cbuf) + cbuf->size = size; return cbuf; } |