* 897366537f("genhd: Fix use after free in __blkdev_get()")
@ 2018-06-25 21:04 Zubin Mithra
2018-07-05 17:03 ` Greg KH
0 siblings, 1 reply; 2+ messages in thread
From: Zubin Mithra @ 2018-06-25 21:04 UTC (permalink / raw)
To: stable; +Cc: groeck, dvyukov
Hello,
Syzkaller has reported a crash here[1] for a UAF in disk_unblock_events.
Could the following patches be applied in order to 4.14?
517bf3c30("block: don't look at the struct device dev_t in disk_devt")
8ddcd653("block: introduce GENHD_FL_HIDDEN")
f0fba398fe("block: avoid null pointer dereference on null disk")
d52987b5("genhd: Fix leaked module reference for NVME devices")
9df6c2991("genhd: Add helper put_disk_and_module()")
89736653("genhd: Fix use after free in __blkdev_get()")
[1] https://syzkaller.appspot.com/bug?id=d932bb61fb530dc6816b87b4649f3b6925f51026
Thanks,
Zubin
^ permalink raw reply [flat|nested] 2+ messages in thread* Re: 897366537f("genhd: Fix use after free in __blkdev_get()")
2018-06-25 21:04 897366537f("genhd: Fix use after free in __blkdev_get()") Zubin Mithra
@ 2018-07-05 17:03 ` Greg KH
0 siblings, 0 replies; 2+ messages in thread
From: Greg KH @ 2018-07-05 17:03 UTC (permalink / raw)
To: Zubin Mithra; +Cc: stable, groeck, dvyukov
On Mon, Jun 25, 2018 at 05:04:42PM -0400, Zubin Mithra wrote:
> Hello,
>
> Syzkaller has reported a crash here[1] for a UAF in disk_unblock_events.
>
> Could the following patches be applied in order to 4.14?
>
> 517bf3c30("block: don't look at the struct device dev_t in disk_devt")
> 8ddcd653("block: introduce GENHD_FL_HIDDEN")
> f0fba398fe("block: avoid null pointer dereference on null disk")
> d52987b5("genhd: Fix leaked module reference for NVME devices")
> 9df6c2991("genhd: Add helper put_disk_and_module()")
> 89736653("genhd: Fix use after free in __blkdev_get()")
You do know about:
git show -s --abbrev-commit --abbrev=12 --pretty=format:"%h (\"%s\")%n"
right? That makes this a lot more uniform...
Anyway, can you resend this request and cc: the developers and
maintainers of the above patches, so I can get their approval to
backport such things?
thanks,
greg k-h
^ permalink raw reply [flat|nested] 2+ messages in thread
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2018-06-25 21:04 897366537f("genhd: Fix use after free in __blkdev_get()") Zubin Mithra
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