linux: copy map_file before tokenizing in uidgidmap_helper #1587
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giuseppe
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Oct 24, 2024
libcrun_set_usernamespace passes uid_map/gid_map to uidgidmap_helper which tokenizes it to pass as process args. But if the helper isn't available, the fallback (when host_uid != 0) reuses this tokenized string and tries writing it to /proc/pid/gid_map which fails with EINVAL Signed-off-by: Andrew Consroe <[email protected]>
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libcrun_set_usernamespace passes uid_map/gid_map to uidgidmap_helper which tokenizes it to pass as process args. But if the helper isn't available, the fallback (when host_uid != 0) reuses this tokenized string and tries writing it to /proc/pid/gid_map which fails with EINVAL
closes #1585