Date: Mon, 18 Sep 2000 13:05:25 -0400 (EDT) From: Bosko Milekic <bmilekic@dsuper.net> To: Fred Souza <cseg@kronus.com.br> Cc: security@FreeBSD.ORG Subject: Re: Panic when receiving packets with invalid versions Message-ID: <Pine.BSF.4.21.0009181259210.18305-100000@jehovah.technokratis.com> In-Reply-To: <20000918115643.A470@torment.secfreak.com>
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On Mon, 18 Sep 2000, Fred Souza wrote: > It seems, the system cannot handle a certain ammount of packets built with > invalid IP version numbers, and will reboot after a short period of time. [...] > Then.. > > Fatal trap 12: page fault while in kernel mode > fault virtual address = 0x0 > fault code = supervisor read, page not present > instruction pointer = 0x8:0xc0190b43 > stack pointer = 0x10:0xc644acc0 > frame pointer = 0x10:0xc644acec > code segment = base 0x0, limit 0xfffff, type 0x1b > = DPL 0, pres 1, def32 1, gran 1 > processor eflags = interrupt enabled, resume, IOPL = 0 > current process = 238 (isic) > interrupt mask = > trap number = 12 > panic: page fault Can you please send a complete traceback, as well as other (more useful) debugging information? -- See the Handbook for more information. Looks like a NULL pointer dereference. Bosko Milekic bmilekic@technokratis.com To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-security" in the body of the message
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