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| author | Eric Dumazet <[email protected]> | 2023-09-05 04:23:38 +0000 |
|---|---|---|
| committer | David S. Miller <[email protected]> | 2023-09-05 16:49:40 +0000 |
| commit | c3b704d4a4a265660e665df51b129e8425216ed1 (patch) | |
| tree | cf8d488ca7e6e0133504e5137a218d87436d5c22 /tools/perf/scripts/python/event_analyzing_sample.py | |
| parent | Revert "net: macsec: preserve ingress frame ordering" (diff) | |
| download | kernel-c3b704d4a4a265660e665df51b129e8425216ed1.tar.gz kernel-c3b704d4a4a265660e665df51b129e8425216ed1.zip | |
igmp: limit igmpv3_newpack() packet size to IP_MAX_MTU
This is a follow up of commit 915d975b2ffa ("net: deal with integer
overflows in kmalloc_reserve()") based on David Laight feedback.
Back in 2010, I failed to realize malicious users could set dev->mtu
to arbitrary values. This mtu has been since limited to 0x7fffffff but
regardless of how big dev->mtu is, it makes no sense for igmpv3_newpack()
to allocate more than IP_MAX_MTU and risk various skb fields overflows.
Fixes: 57e1ab6eaddc ("igmp: refine skb allocations")
Link: https://lore.kernel.org/netdev/[email protected]/
Signed-off-by: Eric Dumazet <[email protected]>
Reported-by: David Laight <[email protected]>
Cc: Kyle Zeng <[email protected]>
Reviewed-by: Simon Horman <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
Diffstat (limited to 'tools/perf/scripts/python/event_analyzing_sample.py')
0 files changed, 0 insertions, 0 deletions