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/> References: <bug-258504-227@https.bugs.freebsd.org/bugzilla/>
next in thread | previous in thread | raw e-mail | index | archive | help
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D258504 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 local= ly I can work on recreating the testing setup to test. https://reviews.freebsd.org/D41229 --=20 You are receiving this mail because: You are the assignee for the bug.=
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?bug-258504-227-nHJdbg9AZZ>