diff options
| author | Eric Biggers <ebiggers@google.com> | 2018-05-14 20:09:24 -0700 |
|---|---|---|
| committer | Johannes Berg <johannes.berg@intel.com> | 2018-05-18 10:01:06 +0200 |
| commit | 814596495dd2b9d4aab92d8f89cf19060d25d2ea (patch) | |
| tree | b959b02ce2feee5aeece71a5593e81951339cc0d /net/wireless/nl80211.c | |
| parent | 6caf9fb3bda17df59de4ed6ed4950c43ca1361e3 (diff) | |
| download | op-kernel-dev-814596495dd2b9d4aab92d8f89cf19060d25d2ea.zip op-kernel-dev-814596495dd2b9d4aab92d8f89cf19060d25d2ea.tar.gz | |
cfg80211: further limit wiphy names to 64 bytes
wiphy names were recently limited to 128 bytes by commit a7cfebcb7594
("cfg80211: limit wiphy names to 128 bytes"). As it turns out though,
this isn't sufficient because dev_vprintk_emit() needs the syslog header
string "SUBSYSTEM=ieee80211\0DEVICE=+ieee80211:$devname" to fit into 128
bytes. This triggered the "device/subsystem name too long" WARN when
the device name was >= 90 bytes. As before, this was reproduced by
syzbot by sending an HWSIM_CMD_NEW_RADIO command to the MAC80211_HWSIM
generic netlink family.
Fix it by further limiting wiphy names to 64 bytes.
Reported-by: syzbot+e64565577af34b3768dc@syzkaller.appspotmail.com
Fixes: a7cfebcb7594 ("cfg80211: limit wiphy names to 128 bytes")
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Diffstat (limited to 'net/wireless/nl80211.c')
0 files changed, 0 insertions, 0 deletions
