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| author | Eric Dumazet <edumazet@google.com> | 2023-01-20 13:31:40 +0000 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2023-01-23 21:37:39 -0800 |
| commit | 5e9398a26a92fc402d82ce1f97cc67d832527da0 (patch) | |
| tree | 306205c5751a295601e5889e5ae3fb9d0bb385eb /Documentation | |
| parent | 1d1d63b612801b3f0a39b7d4467cad0abd60e5c8 (diff) | |
| download | linux-stable-5e9398a26a92fc402d82ce1f97cc67d832527da0.tar.gz linux-stable-5e9398a26a92fc402d82ce1f97cc67d832527da0.tar.bz2 linux-stable-5e9398a26a92fc402d82ce1f97cc67d832527da0.zip | |
ipv4: prevent potential spectre v1 gadget in fib_metrics_match()
if (!type)
continue;
if (type > RTAX_MAX)
return false;
...
fi_val = fi->fib_metrics->metrics[type - 1];
@type being used as an array index, we need to prevent
cpu speculation or risk leaking kernel memory content.
Fixes: 5f9ae3d9e7e4 ("ipv4: do metrics match when looking up and deleting a route")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Link: https://lore.kernel.org/r/20230120133140.3624204-1-edumazet@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'Documentation')
0 files changed, 0 insertions, 0 deletions