Date: Mon, 20 May 2024 14:19:22 +0000 From: bugzilla-noreply@freebsd.org To: bugs@FreeBSD.org Subject: [Bug 266142] SNDSTIOC_ADD_USER_DEVS ioctl on /dev/sndstat passes unchecked size from user to malloc() -> potential crash Message-ID: <bug-266142-227-g67MrtOEzJ@https.bugs.freebsd.org/bugzilla/> In-Reply-To: <bug-266142-227@https.bugs.freebsd.org/bugzilla/> References: <bug-266142-227@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=3D266142 --- Comment #3 from commit-hook@FreeBSD.org --- A commit in branch main references this bug: URL: https://cgit.FreeBSD.org/src/commit/?id=3D074d337ad618f9cc2a1d5ab18b484928e= 57bd72b commit 074d337ad618f9cc2a1d5ab18b484928e57bd72b Author: Christos Margiolis <christos@FreeBSD.org> AuthorDate: 2024-05-20 14:18:28 +0000 Commit: Christos Margiolis <christos@FreeBSD.org> CommitDate: 2024-05-20 14:18:28 +0000 sound: Check user-supplied size passed to SNDSTIOC_ADD_USER_DEVS* SNDSTIOC_ADD_USER_DEVS* expects a user-supplied sndstioc_nv_arg->nbytes, however we currently do not check whether this size is actually valid, which results in a panic when SNDSTIOC_ADD_USER_DEVS* is called with an invalid size. sndstat_add_user_devs() calls sndstat_unpack_user_nvlbuf(), which then calls malloc() with that size. PR: 266142 Sponsored by: The FreeBSD Foundation MFC after: 1 day Reviewed by: brooks Differential Revision: https://reviews.freebsd.org/D45236 sys/dev/sound/pcm/sndstat.c | 5 +++++ sys/sys/sndstat.h | 5 +++++ 2 files changed, 10 insertions(+) --=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-266142-227-g67MrtOEzJ>