Piteball
/
android_kernel_samsung_msm8226
mirror of https://github.com/S3NEO/android_kernel_samsung_msm8226.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

caif: Add sockaddr length check before accessing sa_family in connect handler 

Verify that the caller-provided sockaddr structure is large enough to
contain the sa_family field, before accessing it in the connect()
handler of the AF_CAIF socket. Since the syscall doesn't enforce a minimum
size of the corresponding memory region, very short sockaddrs (zero or one
byte long) result in operating on uninitialized memory while referencing
sa_family.

Change-Id: I19e8282cf2d2acf418d69f2380b319203fd23a84
Signed-off-by: Mateusz Jurczyk <mjurczyk@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Kevin F. Haggerty <haggertk@lineageos.org>
This commit is contained in:
Mateusz Jurczyk 2017-06-13 20:06:12 +02:00 committed by Francescodario Cuzzocrea
parent cb74d8b8f0
commit 47644ea6cf
1 changed files with 4 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
net/caif/caif_socket.c
View File

@ -760,6 +760,10 @@ static int caif_connect(struct socket *sock, struct sockaddr *uaddr,
lock_sock(sk);
err = -EINVAL;
if (addr_len < offsetofend(struct sockaddr, sa_family))
goto out;
err = -EAFNOSUPPORT;
if (uaddr->sa_family != AF_CAIF)
goto out;