selinux: check length properly in SCTP bind hook

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commit c138325fb8 upstream.

selinux_sctp_bind_connect() must verify if the address buffer has
sufficient length before accessing the 'sa_family' field. See
__sctp_connect() for a similar check.

The length of the whole address ('len') is already checked in the
callees.

Reported-by: Qian Cai <cai@gmx.us>
Fixes: d452930fd3 ("selinux: Add SCTP support")
Cc: <stable@vger.kernel.org> # 4.17+
Cc: Richard Haines <richard_c_haines@btinternet.com>
Signed-off-by: Ondrej Mosnacek <omosnace@redhat.com>
Tested-by: Qian Cai <cai@gmx.us>
Signed-off-by: Paul Moore <paul@paul-moore.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

...

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Ondrej Mosnacek 2018-11-13 16:16:08 +01:00 • committed by Greg Kroah-Hartman

parent 18cd6106cf

commit c75e3cbfd9

1 changed files with 3 additions and 0 deletions

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security/selinux/hooks.c

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