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| author | Kuniyuki Iwashima <kuniyu@amazon.com> | 2024-04-29 18:58:08 -0700 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2024-05-01 18:37:06 -0700 |
| commit | 0592367424bbbdef506ef1450f5b8beec148f8a4 (patch) | |
| tree | 5de93458ff802e85bcdbddcef58c5547d27a9ff4 /net/unix/sysctl_net_unix.c | |
| parent | 42033d0cfc8606adc9cb7e18d4c73d2e9a6289e5 (diff) | |
| download | linux-stable-0592367424bbbdef506ef1450f5b8beec148f8a4.tar.gz linux-stable-0592367424bbbdef506ef1450f5b8beec148f8a4.tar.bz2 linux-stable-0592367424bbbdef506ef1450f5b8beec148f8a4.zip | |
arp: Validate netmask earlier for SIOCDARP and SIOCSARP in arp_ioctl().
When ioctl(SIOCDARP/SIOCSARP) is issued with ATF_PUBL, r.arp_netmask
must be 0.0.0.0 or 255.255.255.255.
Currently, the netmask is validated in arp_req_delete_public() or
arp_req_set_public() under rtnl_lock().
We have ATF_NETMASK test in arp_ioctl() before holding rtnl_lock(),
so let's move the netmask validation there.
Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Link: https://lore.kernel.org/r/20240430015813.71143-3-kuniyu@amazon.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'net/unix/sysctl_net_unix.c')
0 files changed, 0 insertions, 0 deletions