vulnerability

Red Hat: CVE-2024-36017: kernel: rtnetlink: Correct nested IFLA_VF_VLAN_LIST attribute validation (Multiple Advisories)

Severity
5
CVSS
(AV:L/AC:L/Au:S/C:P/I:N/A:C)
Published
05/30/2024
Added
08/12/2024
Modified
03/10/2025

Description

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.

Solution(s)

redhat-upgrade-kernelredhat-upgrade-kernel-rt
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