Date: Fri, 16 Aug 2002 14:50:29 -0700 (PDT) From: Larry Baird <lab@gta.com> To: freebsd-gnats-submit@FreeBSD.org Subject: kern/41722: Setting time backward can cause a panic in RTUSE(), RTREUSE() and RTRELEASE() Message-ID: <200208162150.g7GLoT5O067566@www.freebsd.org>
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>Number: 41722 >Category: kern >Synopsis: Setting time backward can cause a panic in RTUSE(), RTREUSE() and RTRELEASE() >Confidential: no >Severity: serious >Priority: medium >Responsible: freebsd-bugs >State: open >Quarter: >Keywords: >Date-Required: >Class: sw-bug >Submitter-Id: current-users >Arrival-Date: Fri Aug 16 15:00:11 PDT 2002 >Closed-Date: >Last-Modified: >Originator: Larry Baird >Release: 4.6.2 >Organization: GTA, Inc >Environment: FreeBSD sukebe.gta.com 4.6.2-RELEASE FreeBSD 4.6.2-RELEASE #0: Fri Aug 16 12:58:40 EDT 2002 lab@sukebe.gta.com:/usr/src/sys/compile/SUKEBE i386 >Description: When setting time backward the creation time of a route becomes after the current time. The caculation for what history to update in RO_USE, RTREUSE() and RTRELEASE() calculates a negative index. This causes the incrementation of a some random point in the kernel. >How-To-Repeat: Set the date to some point in the future. So some long network traffic while setting time back to correct time. >Fix: Cuurently the bounds checking for logic for RTUSE(), RTREUSE() and RTRELEASE() make sure the calculated index isn't greather than 12. Theey alos need to check for less than 0. >Release-Note: >Audit-Trail: >Unformatted: To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-bugs" in the body of the message
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