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| author | Dan Carpenter <dan.carpenter@oracle.com> | 2015-08-01 15:33:26 +0300 |
|---|---|---|
| committer | Moyster <oysterized@gmail.com> | 2016-08-26 20:02:30 +0200 |
| commit | 17cda4a59624e44ad288044f42fab86af612a3df (patch) | |
| tree | 6c988fa60f626da052d32b80ef8574dbf65773a0 /scripts/diffconfig | |
| parent | 1d542ddc22b4d1d8a18c24070ac7e9c7284656f6 (diff) | |
rds: fix an integer overflow test in rds_info_getsockopt()
[ Upstream commit 468b732b6f76b138c0926eadf38ac88467dcd271 ]
"len" is a signed integer. We check that len is not negative, so it
goes from zero to INT_MAX. PAGE_SIZE is unsigned long so the comparison
is type promoted to unsigned long. ULONG_MAX - 4095 is a higher than
INT_MAX so the condition can never be true.
I don't know if this is harmful but it seems safe to limit "len" to
INT_MAX - 4095.
Fixes: a8c879a7ee98 ('RDS: Info and stats')
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Stefan Guendhoer <stefan@guendhoer.com>
Diffstat (limited to 'scripts/diffconfig')
0 files changed, 0 insertions, 0 deletions