CVE-2023-52746 Information

Description

In the Linux kernel the following vulnerability has been resolved:

xfrm/compat: prevent potential spectre v1 gadget in xfrm_xlate32_attr()

int type = nla_type(nla);

if (type > XFRMA_MAX) return -EOPNOTSUPP;

@type is then used as an array index and can be used as a Spectre v1 gadget.

if (nla_len(nla) < compat_policy[type].len)

array_index_nospec() can be used to prevent leaking content of kernel memory to malicious users.

Reference

https://git.kernel.org/stable/c/a893cc644812728e86e9aff517fd5698812ecef0 https://git.kernel.org/stable/c/5dc688fae6b7be9dbbf5304a3d2520d038e06db5 https://git.kernel.org/stable/c/419674224390fca298020fc0751a20812f84b12d https://git.kernel.org/stable/c/b6ee896385380aa621102e8ea402ba12db1cabff