d/freebsd-dev
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

When handling SIOCSIFNAME ensure that the new interface name is NUL

Browse Source 
terminated.  Reject the rename attempt if the name is too long.

MFC after:	1 week
This commit is contained in:
Don Lewis 2016-05-15 21:37:36 +00:00
parent 565e7fd3bc
commit 1ef3d54d20
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=299865
1 changed files with 5 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
sys/net/if.c
View File

@ -2375,6 +2375,11 @@ ifhwioctl(u_long cmd, struct ifnet *ifp, caddr_t data, struct thread *td)
return (error);
if (new_name[0] == '\0')
return (EINVAL);
if (new_name[IFNAMSIZ-1] != '\0') {
new_name[IFNAMSIZ-1] = '\0';
if (strlen(new_name) == IFNAMSIZ-1)
return (EINVAL);
}
if (ifunit(new_name) != NULL)
return (EEXIST);