diff options
| author | Philippe Schenker <philippe.schenker@toradex.com> | 2022-05-19 14:57:48 +0200 |
|---|---|---|
| committer | Philippe Schenker <philippe.schenker@toradex.com> | 2022-05-19 14:57:48 +0200 |
| commit | 0e61b511dd8474280ba674590daa55f30433b7d4 (patch) | |
| tree | 48c35f63dc1101d0d528b5d79c81849b99ca7c6d /drivers/net/ppp/ppp_generic.c | |
| parent | c4bda7fe18b3ff6898f8fa110a3d60ee8f4379a0 (diff) | |
| parent | 01565c91b789a1612051e735a65f11096a6f08e8 (diff) | |
Merge tag 'v5.4.193' into update-to-2.3.7__5.4-2.3.x-imx
This is the 5.4.193 stable release
Conflicts:
arch/arm64/boot/dts/freescale/fsl-ls1028a-qds.dts
drivers/edac/synopsys_edac.c
drivers/mmc/host/sdhci-esdhc-imx.c
drivers/mmc/host/sdhci.c
drivers/mtd/nand/raw/gpmi-nand/gpmi-nand.c
sound/soc/codecs/msm8916-wcd-analog.c
Diffstat (limited to 'drivers/net/ppp/ppp_generic.c')
| -rw-r--r-- | drivers/net/ppp/ppp_generic.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/drivers/net/ppp/ppp_generic.c b/drivers/net/ppp/ppp_generic.c index c6c41a7836c9..a085213dc2ea 100644 --- a/drivers/net/ppp/ppp_generic.c +++ b/drivers/net/ppp/ppp_generic.c @@ -69,6 +69,8 @@ #define MPHDRLEN 6 /* multilink protocol header length */ #define MPHDRLEN_SSN 4 /* ditto with short sequence numbers */ +#define PPP_PROTO_LEN 2 + /* * An instance of /dev/ppp can be associated with either a ppp * interface unit or a ppp channel. In both cases, file->private_data @@ -498,6 +500,9 @@ static ssize_t ppp_write(struct file *file, const char __user *buf, if (!pf) return -ENXIO; + /* All PPP packets should start with the 2-byte protocol */ + if (count < PPP_PROTO_LEN) + return -EINVAL; ret = -ENOMEM; skb = alloc_skb(count + pf->hdrlen, GFP_KERNEL); if (!skb) @@ -1544,7 +1549,7 @@ ppp_send_frame(struct ppp *ppp, struct sk_buff *skb) } ++ppp->stats64.tx_packets; - ppp->stats64.tx_bytes += skb->len - 2; + ppp->stats64.tx_bytes += skb->len - PPP_PROTO_LEN; switch (proto) { case PPP_IP: |