Misc fixups - #72
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Current check is not entirely adequate as it will allow writing pid to a cgroup with a name that is prefixed with the current cgroup name. For example, if current cgroup path ends in "/something", AddPid allows subcgroup to be "../somethingELSE". This is a correctness (rather than a security) fix as runc exec --cgroup (AFAIK the only user) has own checks, too. While at it, use filepath.Join rather than path.Join in fs for symmetry with fs2. Fixes: 304da79 ("Implement AddPid method for cgroup managers") Signed-off-by: Kir Kolyshkin <kolyshkin@gmail.com>
Signed-off-by: Kir Kolyshkin <kolyshkin@gmail.com>
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@opencontainers/cgroups-maintainers PTAL (easy to review) |
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A couple of small fixes to issues found by Project Glasswing which are not security vulnerabilities.