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authorColin Ian King <colin.king@canonical.com>2018-10-06 21:01:42 +0300
committerMauro Carvalho Chehab <mchehab+samsung@kernel.org>2018-10-09 15:05:48 +0300
commit32ae592036d7aeaabcccb2b1715373a68639a768 (patch)
tree70b554b39b6513d6324e2301cdb910e244ecda25 /drivers/scsi/scsi_pm.c
parentd07d9195c950d1cd16ec32a0819b2b98084c0753 (diff)
downloadlinux-32ae592036d7aeaabcccb2b1715373a68639a768.tar.xz
media: cx231xx: fix potential sign-extension overflow on large shift
Shifting the u8 value[3] by an int can lead to sign-extension overflow. For example, if value[3] is 0xff and the shift is 24 then it is promoted to int and then the top bit is sign-extended so that all upper 32 bits are set. Fix this by casting value[3] to a u32 before the shift. Detected by CoverityScan, CID#1016522 ("Unintended sign extension") Fixes: e0d3bafd0258 ("V4L/DVB (10954): Add cx231xx USB driver") Signed-off-by: Colin Ian King <colin.king@canonical.com> Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Diffstat (limited to 'drivers/scsi/scsi_pm.c')
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