kernel: dereferencing NULL payload with nonzero length

A flaw was found in the implementation of associative arrays where the addkey systemcall and KEYCTLUPDATE operations allowed for a NULL payload with a nonzero length. When accessing the payload within this length parameters value, an unprivileged user could trivially cause a NULL pointer...

kernel: dereferencing NULL payload with nonzero length

A flaw was found in the implementation of associative arrays where the addkey systemcall and KEYCTLUPDATE operations allowed for a NULL payload with a nonzero length. When accessing the payload within this length parameters value, an unprivileged user could trivially cause a NULL pointer...