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[ Upstream commit d71b7896886345c53ef1d84bda2bc758554f5d61 ] syzkaller found another out of bound access in ip_options_compile(), or more exactly in cipso_v4_validate() Fixes:20e2a86485("cipso: handle CIPSO options correctly when NetLabel is disabled") Fixes:446fda4f26("[NetLabel]: CIPSOv4 engine") Signed-off-by: Eric Dumazet <edumazet@google.com> Reported-by: Dmitry Vyukov <dvyukov@google.com> Cc: Paul Moore <paul@paul-moore.com> Acked-by: Paul Moore <paul@paul-moore.com> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>