* [PATCH 4.14 0/1] block-map: backport fix for CVE-2022-0494
@ 2022-06-02 15:01 Dragos-Marian Panait
2022-06-02 15:01 ` [PATCH 4.14 1/1] block-map: add __GFP_ZERO flag for alloc_page in function bio_copy_kern Dragos-Marian Panait
2022-06-03 14:45 ` [PATCH 4.14 0/1] block-map: backport fix for CVE-2022-0494 Greg Kroah-Hartman
0 siblings, 2 replies; 3+ messages in thread
From: Dragos-Marian Panait @ 2022-06-02 15:01 UTC (permalink / raw)
To: stable
Cc: Haimin Zhang, Chaitanya Kulkarni, Christoph Hellwig, Jens Axboe,
linux-block, linux-kernel, Greg Kroah-Hartman,
Dragos-Marian Panait
The following commit is needed to fix CVE-2022-0494:
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=cc8f7fe1f5eab010191aa4570f27641876fa1267
Haimin Zhang (1):
block-map: add __GFP_ZERO flag for alloc_page in function
bio_copy_kern
block/bio.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
base-commit: 501eec4f9e138b958fc7438e7a745c0d6a7c68b3
--
2.36.1
^ permalink raw reply [flat|nested] 3+ messages in thread* [PATCH 4.14 1/1] block-map: add __GFP_ZERO flag for alloc_page in function bio_copy_kern
2022-06-02 15:01 [PATCH 4.14 0/1] block-map: backport fix for CVE-2022-0494 Dragos-Marian Panait
@ 2022-06-02 15:01 ` Dragos-Marian Panait
2022-06-03 14:45 ` [PATCH 4.14 0/1] block-map: backport fix for CVE-2022-0494 Greg Kroah-Hartman
1 sibling, 0 replies; 3+ messages in thread
From: Dragos-Marian Panait @ 2022-06-02 15:01 UTC (permalink / raw)
To: stable
Cc: Haimin Zhang, Chaitanya Kulkarni, Christoph Hellwig, Jens Axboe,
linux-block, linux-kernel, Greg Kroah-Hartman,
Dragos-Marian Panait
From: Haimin Zhang <tcs.kernel@gmail.com>
commit cc8f7fe1f5eab010191aa4570f27641876fa1267 upstream.
Add __GFP_ZERO flag for alloc_page in function bio_copy_kern to initialize
the buffer of a bio.
Signed-off-by: Haimin Zhang <tcs.kernel@gmail.com>
Reviewed-by: Chaitanya Kulkarni <kch@nvidia.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Link: https://lore.kernel.org/r/20220216084038.15635-1-tcs.kernel@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
[DP: Backported to 4.14: Manually added __GFP_ZERO flag]
Signed-off-by: Dragos-Marian Panait <dragos.panait@windriver.com>
---
block/bio.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/block/bio.c b/block/bio.c
index 30df1b45dde8..1eaf31976702 100644
--- a/block/bio.c
+++ b/block/bio.c
@@ -1657,7 +1657,7 @@ struct bio *bio_copy_kern(struct request_queue *q, void *data, unsigned int len,
if (bytes > len)
bytes = len;
- page = alloc_page(q->bounce_gfp | gfp_mask);
+ page = alloc_page(q->bounce_gfp | __GFP_ZERO | gfp_mask);
if (!page)
goto cleanup;
--
2.36.1
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [PATCH 4.14 0/1] block-map: backport fix for CVE-2022-0494
2022-06-02 15:01 [PATCH 4.14 0/1] block-map: backport fix for CVE-2022-0494 Dragos-Marian Panait
2022-06-02 15:01 ` [PATCH 4.14 1/1] block-map: add __GFP_ZERO flag for alloc_page in function bio_copy_kern Dragos-Marian Panait
@ 2022-06-03 14:45 ` Greg Kroah-Hartman
1 sibling, 0 replies; 3+ messages in thread
From: Greg Kroah-Hartman @ 2022-06-03 14:45 UTC (permalink / raw)
To: Dragos-Marian Panait
Cc: stable, Haimin Zhang, Chaitanya Kulkarni, Christoph Hellwig,
Jens Axboe, linux-block, linux-kernel
On Thu, Jun 02, 2022 at 06:01:56PM +0300, Dragos-Marian Panait wrote:
> The following commit is needed to fix CVE-2022-0494:
> https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=cc8f7fe1f5eab010191aa4570f27641876fa1267
>
> Haimin Zhang (1):
> block-map: add __GFP_ZERO flag for alloc_page in function
> bio_copy_kern
>
> block/bio.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
>
> base-commit: 501eec4f9e138b958fc7438e7a745c0d6a7c68b3
> --
> 2.36.1
>
All now queued up, thanks.
greg k-h
^ permalink raw reply [flat|nested] 3+ messages in thread
end of thread, other threads:[~2022-06-03 14:45 UTC | newest]
Thread overview: 3+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2022-06-02 15:01 [PATCH 4.14 0/1] block-map: backport fix for CVE-2022-0494 Dragos-Marian Panait
2022-06-02 15:01 ` [PATCH 4.14 1/1] block-map: add __GFP_ZERO flag for alloc_page in function bio_copy_kern Dragos-Marian Panait
2022-06-03 14:45 ` [PATCH 4.14 0/1] block-map: backport fix for CVE-2022-0494 Greg Kroah-Hartman
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox
all inboxes | Powered by JetHome®