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| author | Dan Carpenter <dan.carpenter@oracle.com> | 2019-12-03 12:58:55 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-02-24 10:36:24 +0300 |
| commit | 071963d3714301c7b14c8e71200d9bf5c30925ce (patch) | |
| tree | 7944d5092b23fd362c90ce8d654b51ee4747018a /drivers/net/wireless/broadcom | |
| parent | 55195593a8c6b12450d36670c9b9d0b7bc974e83 (diff) | |
| download | linux-071963d3714301c7b14c8e71200d9bf5c30925ce.tar.xz | |
brcmfmac: Fix use after free in brcmf_sdio_readframes()
[ Upstream commit 216b44000ada87a63891a8214c347e05a4aea8fe ]
The brcmu_pkt_buf_free_skb() function frees "pkt" so it leads to a
static checker warning:
drivers/net/wireless/broadcom/brcm80211/brcmfmac/sdio.c:1974 brcmf_sdio_readframes()
error: dereferencing freed memory 'pkt'
It looks like there was supposed to be a continue after we free "pkt".
Fixes: 4754fceeb9a6 ("brcmfmac: streamline SDIO read frame routine")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Franky Lin <franky.lin@broadcom.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'drivers/net/wireless/broadcom')
| -rw-r--r-- | drivers/net/wireless/broadcom/brcm80211/brcmfmac/sdio.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/sdio.c b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/sdio.c index 264ad63232f8..1dea0178832e 100644 --- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/sdio.c +++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/sdio.c @@ -1935,6 +1935,7 @@ static uint brcmf_sdio_readframes(struct brcmf_sdio *bus, uint maxframes) BRCMF_SDIO_FT_NORMAL)) { rd->len = 0; brcmu_pkt_buf_free_skb(pkt); + continue; } bus->sdcnt.rx_readahead_cnt++; if (rd->len != roundup(rd_new.len, 16)) { |