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![]() The commit referenced in the Fixes tag incorrectly accounted the number
of in-flight fds over a unix domain socket to the original opener
of the file-descriptor. This allows another process to arbitrary
deplete the original file-openers resource limit for the maximum of
open files. Instead the sending processes and its struct cred should
be credited.
To do so, we add a reference counted struct user_struct pointer to the
scm_fp_list and use it to account for the number of inflight unix fds.
Fixes:
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.. | ||
af_unix.c | ||
diag.c | ||
garbage.c | ||
Kconfig | ||
Makefile | ||
sysctl_net_unix.c |