Mauro Carvalho Chehab
53f2ae3064
BugLink: https://bugs.launchpad.net/bugs/2100292
commit e6a3ea83fbe15d4818d01804e904cbb0e64e543b upstream.
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.
Fixes: 63881df94d ("[media] vivid: add the Test Pattern Generator")
Cc: stable@vger.kernel.org
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
CVE-2024-50287
Signed-off-by: Koichiro Den <koichiro.den@canonical.com>
Signed-off-by: Stefan Bader <stefan.bader@canonical.com>