ACK: [SRU][OEM-5.14/OEM-5.17][PATCH 0/1] CVE-2022-41849

[Tim Gardner]

On 3/15/23 2:35 PM, Yuxuan Luo wrote:
> [Impact]
> It was discovered that a race condition existed in the SMSC UFX USB driver
> implementation in the Linux kernel when physically removing the USB device
> while calling open() for this device node, leading to a use-after-free
> vulnerability. A physically proximate attacker could use this to cause a
> denial of service (system crash) or possibly execute arbitrary code.
> 
> [Backport]
> It is a clean cherry pick.
> 
> [Test]
> Compile and boot tested.
> 
> [Potential Regression]
> Relatively low because it only adds a mutex in open() and disconnect() function
> 
> Hyunwoo Kim (1):
>    fbdev: smscufx: Fix use-after-free in ufx_ops_open()
> 
>   drivers/video/fbdev/smscufx.c | 14 +++++++++++++-
>   1 file changed, 13 insertions(+), 1 deletion(-)
> 
Acked-by: Tim Gardner <tim.gardner at canonical.com>
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Tim Gardner
Canonical, Inc