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| author |  Eric Dumazet <edumazet@google.com>
| 2024-04-20 07:01:16 +0000 |
|---|---|---|
| committer |  David S. Miller <davem@davemloft.net>
| 2024-04-22 10:00:31 +0100 |
| commit | c58e88d49097bd12dfcfef4f075b43f5d5830941 (patch) | |
| tree | f0f7098b71cb530c21282731c88b63cb399b6676 /Kconfig | |
| parent | net: usb: qmi_wwan: add Telit FN920C04 compositions (diff) | |
| download | linux-c58e88d49097bd12dfcfef4f075b43f5d5830941.tar.gz linux-c58e88d49097bd12dfcfef4f075b43f5d5830941.tar.bz2 linux-c58e88d49097bd12dfcfef4f075b43f5d5830941.zip | |
icmp: prevent possible NULL dereferences from icmp_build_probe()
First problem is a double call to __in_dev_get_rcu(), because
the second one could return NULL.
if (__in_dev_get_rcu(dev) && __in_dev_get_rcu(dev)->ifa_list)
Second problem is a read from dev->ip6_ptr with no NULL check:
if (!list_empty(&rcu_dereference(dev->ip6_ptr)->addr_list))
Use the correct RCU API to fix these.
v2: add missing include <net/addrconf.h>
Fixes: d329ea5bd884 ("icmp: add response to RFC 8335 PROBE messages")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Andreas Roeseler <andreas.a.roeseler@gmail.com>
Reviewed-by: David Ahern <dsahern@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'Kconfig')
0 files changed, 0 insertions, 0 deletions