Re: [PATCH] xfs: fix missing ILOCK unlock when xfs_setattr_nonsize fails due to EDQUOT

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Hi Greg,

On Sun, Aug 25, 2019 at 05:13:18AM +0200, Greg KH wrote:
> On Sat, Aug 24, 2019 at 11:44:44AM -0700, Linus Torvalds wrote:
> > On Fri, Aug 23, 2019 at 12:24 PM Salvatore Bonaccorso <carnil@xxxxxxxxxx> wrote:
> > >
> > > Confirmed the fix work.
> > >
> > > Feel free to add a Tested-by if wanted.
> > >
> > > Can this be backported to the relevant stable versions as well?
> > 
> > It's out there in my tree now. It's not explicitly marked for stable
> > per se, but it does have the "Fixes:" tag which should mean that Greg
> > and Sasha will pick it up automatically.
> > 
> > But just to make it explicit, since Greg is on the security list,
> > Darrick's fix is commit 1fb254aa983b ("xfs: fix missing ILOCK unlock
> > when xfs_setattr_nonsize fails due to EDQUOT").
> 
> Thanks, I'll pick this up.
> 
> Note, "Fixes:" will never guarantee that a patch ends up in a stable
> release.  Sasha's scripts usually do a good job of catching a lot of
> them a week or so after-the-fact, but they are not guaranteed to do so.
> A CC: stable@ will always be caught by me, and I try to ensure that
> anything goes across the security@k.o list also gets picked up.

Thank you.

FTR, for those interested in tracking this fix for the DoS potential
as vulnerability, MITRE has assigned CVE-2019-15538 for this issue.

Regards,
Salvatore



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