Description: i2c: validate user data in compat ioctl
References:
Notes:
 carnil> Introduced in 7d5cb45655f2 ("i2c compat ioctls: move to ->compat_ioctl()").
 carnil> Vulnerable versions: 4.15-rc1.
Bugs:
upstream: released (5.16-rc8) [bb436283e25aaf1533ce061605d23a9564447bdf]
6.7-upstream-stable: N/A "Fixed before branching point"
6.6-upstream-stable: N/A "Fixed before branching point"
6.1-upstream-stable: N/A "Fixed before branching point"
5.10-upstream-stable: released (5.10.90) [8d31cbab4c295d7010ebb729e9d02d0e9cece18f]
4.19-upstream-stable: released (4.19.224) [407c8708fb1bf2d4afc5337ef50635cf540c364b]
sid: released (5.15.15-1)
6.1-bookworm-security: N/A "Fixed before branching point"
5.10-bullseye-security: released (5.10.92-1)
4.19-buster-security: released (4.19.232-1)