Date: Mon, 02 Jan 2017 00:43:46 +0000 From: bugzilla-noreply@freebsd.org To: freebsd-bugs@FreeBSD.org Subject: [Bug 215705] VOP_REMOVE call with invalid cn_nameptr Message-ID: <bug-215705-8@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D215705 Bug ID: 215705 Summary: VOP_REMOVE call with invalid cn_nameptr Product: Base System Version: 10.3-RELEASE Hardware: Any OS: Any Status: New Severity: Affects Only Me Priority: --- Component: kern Assignee: freebsd-bugs@FreeBSD.org Reporter: root@linkage.white-void.net Created attachment 178439 --> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=3D178439&action= =3Dedit patch In kern_unlinkat, VOP_REMOVE is invoked with invalid cn_nameptr, which was freed by iname. Since the memory region at cn_nameptr is already freed while VOP_REMOVE, uma_zalloc with namei_zone may return a block overwrapping cn_nameptr. Adding SAVENAME flag to NDINIT_ATRIGHTS(iname call) solves this problem. --=20 You are receiving this mail because: You are the assignee for the bug.=
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