Integer overflow

Integer overflow in the envwrite function in the Alcatel-Lucent Bell Labs Plan 9 kernel allows local users to overwrite certain memory addresses with kernel memory via a large n argument, as demonstrated by 1 modifying the iseve function to gain privileges and 2 making the devpermcheck function...

CVE-2007-1189

CVE-2007-1189 : Concrete details show an integer overflow in the Plan 9 kernel’s envwrite function (Alcatel-Lucent Bell Labs Plan 9) that can be triggered by a large n argument. This vulnerability allows local users to overwrite kernel memory, with demonstrated effects including privilege escalat...