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| author |   Gustavo A. R. Silva <gustavo@embeddedor.com> | 2018-12-11 14:10:08 -0600 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2018-12-14 15:34:28 -0800 |
| commit | 69d2c86766da2ded2b70281f1bf242cb0d58a778 (patch) | |
| tree | 2dff5a7d1cb78ea10ed065a738fa4ba991ec3eac /tools/perf/scripts/python/export-to-postgresql.py | |
| parent | w90p910_ether: remove incorrect __init annotation (diff) | |
| download | linux-dev-69d2c86766da2ded2b70281f1bf242cb0d58a778.tar.xz linux-dev-69d2c86766da2ded2b70281f1bf242cb0d58a778.zip | |
ip6mr: Fix potential Spectre v1 vulnerability
vr.mifi is indirectly controlled by user-space, hence leading to
a potential exploitation of the Spectre variant 1 vulnerability.
This issue was detected with the help of Smatch:
net/ipv6/ip6mr.c:1845 ip6mr_ioctl() warn: potential spectre issue 'mrt->vif_table' [r] (local cap)
net/ipv6/ip6mr.c:1919 ip6mr_compat_ioctl() warn: potential spectre issue 'mrt->vif_table' [r] (local cap)
Fix this by sanitizing vr.mifi before using it to index mrt->vif_table'
Notice that given that speculation windows are large, the policy is
to kill the speculation on the first load and not worry if it can be
completed with a dependent load/store [1].
[1] https://marc.info/?l=linux-kernel&m=152449131114778&w=2
Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'tools/perf/scripts/python/export-to-postgresql.py')
0 files changed, 0 insertions, 0 deletions