ACK: [SRU B/F/H/I/OEM-5.10/HWE-5.8 0/1] CVE-2021-40490

Kelsey Skunberg kelsey.skunberg at canonical.com
Wed Sep 15 22:33:31 UTC 2021


Acked-by: Kelsey Skunberg <kelsey.skunberg at canonical.com>

On 2021-09-15 14:28:17 , Thadeu Lima de Souza Cascardo wrote:
> [Impact]
> A race when setting xattrs will cause an OOB write, leading to a crash.
> 
> [Test case]
> A syzkaller reproducer was used to test it. All fixed kernels pass. The
> test also ends up exercising the changed code.
> 
> [Potential regression]
> ext4 filesystems may be corrupt or system crashes related to ext4 might happen.
> 
> Theodore Ts'o (1):
>   ext4: fix race writing to an inline_data file while its xattrs are
>     changing
> 
>  fs/ext4/inline.c | 6 ++++++
>  1 file changed, 6 insertions(+)
> 
> -- 
> 2.30.2
> 
> 
> -- 
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