diff options
| author | Peilin Ye <yepeilin.cs@gmail.com> | 2020-07-22 12:05:12 -0400 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2020-07-22 18:06:49 -0700 |
| commit | 8885bb0621f01a6c82be60a91e5fc0f6e2f71186 (patch) | |
| tree | c91120c4f5a39c568f95e4f48a9098cb285c2678 /net/l3mdev | |
| parent | f659173364c64d3276b8aba62368e7e732fab309 (diff) | |
AX.25: Prevent out-of-bounds read in ax25_sendmsg()
Checks on `addr_len` and `usax->sax25_ndigis` are insufficient.
ax25_sendmsg() can go out of bounds when `usax->sax25_ndigis` equals to 7
or 8. Fix it.
It is safe to remove `usax->sax25_ndigis > AX25_MAX_DIGIS`, since
`addr_len` is guaranteed to be less than or equal to
`sizeof(struct full_sockaddr_ax25)`
Signed-off-by: Peilin Ye <yepeilin.cs@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/l3mdev')
0 files changed, 0 insertions, 0 deletions