Date: Fri, 28 May 2021 17:41:03 +0200 From: Oliver Hartkopp <socketcan@...tkopp.net> To: Greg Kroah-Hartman <gregkh@...uxfoundation.org> Cc: mkl@...gutronix.de, alex.popov@...ux.com, seth.arnold@...onical.com, steve.beattie@...onical.com, cascardo@...onical.com, oss-security@...ts.openwall.com, Norbert Slusarek <nslusarek@....net>, "David S. Miller" <davem@...emloft.net>, Jakub Kicinski <kuba@...nel.org>, security@...nel.org Subject: Re: Linux kernel: net/can/isotp: race condition leads to local privilege escalation Hello Greg, this patch ("can: isotp: prevent race between isotp_bind() and isotp_setsockopt()") has hit Linus' tree ~36h ago: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/net/can?id=2b17c400aeb44daf041627722581ade527bb3c1d It has a CVE number and is potentially exploitable - but it was not in the latest batch of stable kernels about ~4h ago. It was obviously not tagged properly for stable kernels but has a fixes-tag: Fixes: 921ca574cd38 ("can: isotp: add SF_BROADCAST support for functional addressing") which was introduced in 5.11 Thanks for taking care! Best, Oliver On 14.05.21 01:52, Norbert Slusarek wrote: > As Salvatore already mentioned, the assigned CVE ID is CVE-2021-32606. > The exploitation details are published in an article available on github > via this link: > https://git.io/JsYYB > <https://deref-gmx.net/mail/client/ulc_0Gq1TD4/dereferrer/?redirectUrl=https%3A%2F%2Fgit.io%2FJsYYB> > > Regards, > Norbert Slusarek
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