Date: Wed, 30 Sep 2020 08:32:54 +0200 From: Greg KH <greg@...ah.com> To: oss-security@...ts.openwall.com Subject: Re: CVE-2020-25641 kernel: soft lockup when submitting zero length bvecs. On Wed, Sep 30, 2020 at 10:35:56AM +1000, Wade Mealing wrote: > Gday, > > A flaw was found in the Linux kernels implementation of biovec usage. A > zero-length biovec request issued to the block subsystem could cause the > kernel to enter an infinite loop causing a denial of service. An attacker > with a local account can issue requests to a block device can cause a > denial of service. > > This has been assigned CVE-2020-25641, > > According to the fix commits "Introduced in": > # git tag --contains 1bdc76aea115 | head -n 1 > v4.10 That's odd, and not the best way to do this, the commit really showed up in 4.8-rc1: $ git describe --contains 1bdc76aea115 v4.8-rc1~162^2~21 You forgot to sort by "version", which is what you need to do if you want to try to look at tags, but then it's still a bit off: $ git tag --contains 1bdc76aea115 | sort -V | head -n 10 v4.8 v4.8-rc1 v4.8-rc2 v4.8-rc3 v4.8-rc4 v4.8-rc5 v4.8-rc6 v4.8-rc7 v4.8-rc8 v4.9 hope this helps, greg k-h
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