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

Yuxuan Luo yuxuan.luo at canonical.com
Wed Mar 15 20:35:23 UTC 2023


[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(-)

-- 
2.34.1




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