Date: Tue, 21 May 2024 17:54:12 +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-r2Va32Ycp1@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/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D266142 --- Comment #4 from commit-hook@FreeBSD.org --- A commit in branch stable/14 references this bug: URL: https://cgit.FreeBSD.org/src/commit/?id=3D5830a00c2c5485ec17900558e4f29c459= c6a1f3e commit 5830a00c2c5485ec17900558e4f29c459c6a1f3e Author: Christos Margiolis <christos@FreeBSD.org> AuthorDate: 2024-05-20 14:18:28 +0000 Commit: Christos Margiolis <christos@FreeBSD.org> CommitDate: 2024-05-21 17:45:49 +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 (cherry picked from commit 074d337ad618f9cc2a1d5ab18b484928e57bd72b) 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.=
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