Date: Sat, 29 Oct 2022 15:40:42 -0400 From: Demi Marie Obenour <demi@...isiblethingslab.com> To: oss-security@...ts.openwall.com Cc: Jisoo Jang <jisoo.jang@...sei.ac.kr>, Minsuk Kang <linuxlovemin@...sei.ac.kr> Subject: Re: CVE-2022-3628: A USB-accessible buffer overflow in Linux kernel driver On Sat, Oct 29, 2022 at 05:33:21PM +0900, Dokyung Song wrote: > === Description === > > An intra-object buffer overflow was found in brcmfmac (an upstream > Broadcom's USB Wi-Fi driver), which can be triggered by a malicious USB > device. > > As the object where the overflow could occur contains multiple function > pointers (e.g., bus_reset.func), with knowledge of the code layout (i.e., > KASLR needs bypassing) the vulnerability could potentially be exploited by > an attacker who controls USB messages. Without knowledge of the code > layout, the consequence is a DoS. Can this be exploited by means of e.g. partial function pointer overwrites without having to bypass KASLR? -- Sincerely, Demi Marie Obenour (she/her/hers) Invisible Things Lab Download attachment "signature.asc" of type "application/pgp-signature" (834 bytes)
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