NetSight
IP …
high7.1

CVE-2024-35962

In the Linux kernel, the following vulnerability has been resolved: netfilter: complete validation of user input In my recent commit, I missed that do_replace(…

Impact

In the Linux kernel, the following vulnerability has been resolved: netfilter: complete validation of user input In my recent commit, I missed that do_replace() handlers use copy_from_sockptr() (which I fixed), followed by unsafe copy_from_sockptr_offset() calls. In all functions, we can perform the @optlen validation before even calling xt_alloc_table_info() with the following check: if ((u64)optlen < (u64)tmp.size + sizeof(tmp)) return -EINVAL;

Affected products

VendorProductAffected versions
LinuxLinux Kernel
from 5.15.154 before 5.15.156
from 6.1.85 before 6.1.87
from 6.6.26 before 6.6.28
from 6.8.5 before 6.8.7
Versions 5.10.215, 6.9
DebianDebian Linux
Version 10.0

References