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| author | Dan Carpenter <[email protected]> | 2015-08-01 12:33:26 +0000 |
|---|---|---|
| committer | David S. Miller <[email protected]> | 2015-08-03 22:20:16 +0000 |
| commit | 468b732b6f76b138c0926eadf38ac88467dcd271 (patch) | |
| tree | 73a2bc14e65b87701954fbc997c62b54ba8ae52f /drivers/net/xen-netback/interface.c | |
| parent | act_mirred: avoid calling tcf_hash_release() when binding (diff) | |
| download | kernel-468b732b6f76b138c0926eadf38ac88467dcd271.tar.gz kernel-468b732b6f76b138c0926eadf38ac88467dcd271.zip | |
rds: fix an integer overflow test in rds_info_getsockopt()
"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 <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
Diffstat (limited to 'drivers/net/xen-netback/interface.c')
0 files changed, 0 insertions, 0 deletions