Vulnerability CVE-2024-38659
Published: 2024-06-21

Description:
In the Linux kernel, the following vulnerability has been resolved:

enic: Validate length of nl attributes in enic_set_vf_port

enic_set_vf_port assumes that the nl attribute IFLA_PORT_PROFILE
is of length PORT_PROFILE_MAX and that the nl attributes
IFLA_PORT_INSTANCE_UUID, IFLA_PORT_HOST_UUID are of length PORT_UUID_MAX.
These attributes are validated (in the function do_setlink in rtnetlink.c)
using the nla_policy ifla_port_policy. The policy defines IFLA_PORT_PROFILE
as NLA_STRING, IFLA_PORT_INSTANCE_UUID as NLA_BINARY and
IFLA_PORT_HOST_UUID as NLA_STRING. That means that the length validation
using the policy is for the max size of the attributes and not on exact
size so the length of these attributes might be less than the sizes that
enic_set_vf_port expects. This might cause an out of bands
read access in the memcpys of the data of these
attributes in enic_set_vf_port.

 References:
https://git.kernel.org/stable/c/2b649d7e0cb42a660f0260ef25fd55fdc9c6c600
https://git.kernel.org/stable/c/ca63fb7af9d3e531aa25f7ae187bfc6c7166ec2d
https://git.kernel.org/stable/c/3c0d36972edbe56fcf98899622d9b90ac9965227
https://git.kernel.org/stable/c/25571a12fbc8a1283bd8380d461267956fd426f7
https://git.kernel.org/stable/c/7077c22f84f41974a711604a42fd0e0684232ee5
https://git.kernel.org/stable/c/f6638e955ca00c489894789492776842e102af9c
https://git.kernel.org/stable/c/aee1955a1509a921c05c70dad5d6fc8563dfcb31
https://git.kernel.org/stable/c/e8021b94b0412c37bcc79027c2e382086b6ce449
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