diff options
| author | Eric Biggers <[email protected]> | 2018-05-13 17:01:30 -0700 |
|---|---|---|
| committer | David S. Miller <[email protected]> | 2018-05-14 16:40:45 -0400 |
| commit | d49baa7e12ee70c0a7b821d088a770c94c02e494 (patch) | |
| tree | 533f8add47270500c196ce5241e8d578283a4dc6 /tools/perf/util/scripting-engines/trace-event-python.c | |
| parent | 57f6f99fdad9984801cde05c1db68fe39b474a10 (diff) | |
net/smc: check for missing nlattrs in SMC_PNETID messages
It's possible to crash the kernel in several different ways by sending
messages to the SMC_PNETID generic netlink family that are missing the
expected attributes:
- Missing SMC_PNETID_NAME => null pointer dereference when comparing
names.
- Missing SMC_PNETID_ETHNAME => null pointer dereference accessing
smc_pnetentry::ndev.
- Missing SMC_PNETID_IBNAME => null pointer dereference accessing
smc_pnetentry::smcibdev.
- Missing SMC_PNETID_IBPORT => out of bounds array access to
smc_ib_device::pattr[-1].
Fix it by validating that all expected attributes are present and that
SMC_PNETID_IBPORT is nonzero.
Reported-by: [email protected]
Fixes: 6812baabf24d ("smc: establish pnet table management")
Cc: <[email protected]> # v4.11+
Signed-off-by: Eric Biggers <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
Diffstat (limited to 'tools/perf/util/scripting-engines/trace-event-python.c')
0 files changed, 0 insertions, 0 deletions