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

[Tim Gardner]

Acked-by: Tim Gardner <tim.gardner at canonical.com>

On 9/15/21 11:28 AM, 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(+)
> 

-- 
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Tim Gardner
Canonical, Inc