Date: Fri, 28 Jul 2023 22:28:15 +0000 From: bugzilla-noreply@freebsd.org To: bugs@FreeBSD.org Subject: [Bug 258504] smbfs doesn't validate msg fields -> potential kernel page fault Message-ID: <bug-258504-227-nHJdbg9AZZ@https.bugs.freebsd.org/bugzilla/> In-Reply-To: <bug-258504-227@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=258504 John Baldwin <jhb@FreeBSD.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Assignee|bugs@FreeBSD.org |jhb@FreeBSD.org CC| |jhb@FreeBSD.org --- Comment #1 from John Baldwin <jhb@FreeBSD.org> --- I think there is also a bug in that smb_t2_placedata assumes that the last mbuf in the chain is large enough to contain all of the bits to be discarded. I've replaced that with a call to m_adj() with a negative length which trims from the end while handling this case. I have not yet tested a potential fix as setting up samba is a bit more work than some of the other bugs. If it is not easy to test potential fix locally I can work on recreating the testing setup to test. https://reviews.freebsd.org/D41229 -- You are receiving this mail because: You are the assignee for the bug.help
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