[SRU][N][PATCH 0/1] CVE-2024-50287

[Andrei Gherzan]

[Impact]

media: v4l2-tpg: prevent the risk of a division by zero
As reported by Coverity, the logic at tpg_precalculate_line()
blindly rescales the buffer even when scaled_witdh is equal to
zero. If this ever happens, this will cause a division by zero.

Instead, add a WARN_ON_ONCE() to trigger such cases and return
without doing any precalculation.

[Fix]

Noble:  The fix applies cleanly.

[Test Case]

* Build test for all supported architectures.
* Boot tested on amd64 architecture.

[Where problems could occur]

The change could affect users of V4L2 Test Pattern Generator support.

Mauro Carvalho Chehab (1):
  media: v4l2-tpg: prevent the risk of a division by zero

 drivers/media/common/v4l2-tpg/v4l2-tpg-core.c | 3 +++
 1 file changed, 3 insertions(+)

-- 
2.43.0