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medium5.5

CVE-2024-36017

In the Linux kernel, the following vulnerability has been resolved: rtnetlink: Correct nested IFLA_VF_VLAN_LIST attribute validation Each attribute inside a ne…

Impact

In the Linux kernel, the following vulnerability has been resolved: rtnetlink: Correct nested IFLA_VF_VLAN_LIST attribute validation Each attribute inside a nested IFLA_VF_VLAN_LIST is assumed to be a struct ifla_vf_vlan_info so the size of such attribute needs to be at least of sizeof(struct ifla_vf_vlan_info) which is 14 bytes. The current size validation in do_setvfinfo is against NLA_HDRLEN (4 bytes) which is less than sizeof(struct ifla_vf_vlan_info) so this validation is not enough and a too small attribute might be cast to a struct ifla_vf_vlan_info, this might result in an out of bands read access when accessing the saved (casted) entry in ivvl.

Affected products

VendorProductAffected versions
LinuxLinux Kernel
from 4.9 before 4.19.314
from 4.20 before 5.4.276
from 5.5 before 5.10.217
from 5.11 before 5.15.159
from 5.16 before 6.1.91
from 6.2 before 6.6.31
DebianDebian Linux
Version 10.0

References