Date: Mon, 22 Mar 2021 15:26:32 +0000 From: bugzilla-noreply@freebsd.org To: wireless@FreeBSD.org Subject: [Bug 254479] Kernel remote heap overflow in Realtek RTL8188SU/RTL8191SU/RTL8192SU Wifi Cards USB driver Message-ID: <bug-254479-21060-XT5SEdYnzt@https.bugs.freebsd.org/bugzilla/> In-Reply-To: <bug-254479-21060@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=254479 Mark Johnston <markj@FreeBSD.org> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |markj@FreeBSD.org Status|Open |Closed Resolution|--- |Not A Bug --- Comment #5 from Mark Johnston <markj@FreeBSD.org> --- Whether the lock is held doesn't really matter. At this point the driver owns the mbuf. The lock only protects driver state, so if, say, it updates a descriptor to point to the mbuf buffer, we'd want to ensure that the pointer is cleared before the mbuf is freed or handed off to other layers. But the actual m_freem() call does not require any synchronization. -- You are receiving this mail because: You are the assignee for the bug.home | help
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