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net/compat: Add missing sock updates for SCM_RIGHTS

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commit d9539752d23283db4692384a634034f451261e29 upstream.

Add missed sock updates to compat path via a new helper, which will be
used more in coming patches. (The net/core/scm.c code is left as-is here
to assist with -stable backports for the compat path.)

Cc: Christoph Hellwig <[email protected]>
Cc: Sargun Dhillon <[email protected]>
Cc: Jakub Kicinski <[email protected]>
Cc: [email protected]
Fixes: 48a87cc26c ("net: netprio: fd passed in SCM_RIGHTS datagram not set correctly")
Fixes: d84295067f ("net: net_cls: fd passed in SCM_RIGHTS datagram not set correctly")
Acked-by: Christian Brauner <[email protected]>
Signed-off-by: Kees Cook <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
This commit is contained in:
Kees Cook 2020-06-09 16:11:29 -07:00 • committed by Greg Kroah-Hartman
commit 2816386853
3 changed files with 26 additions and 0 deletions
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1
net/compat.c
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@ -291,6 +291,7 @@ void scm_detach_fds_compat(struct msghdr *kmsg, struct scm_cookie *scm)
break;
}
/* Bump the usage count and install the file. */
__receive_sock(fp[i]);
fd_install(new_fd, get_file(fp[i]));
}