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

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

Created

08/13/2024

Added

08/12/2024

Modified

12/05/2024

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-kernel
• redhat-upgrade-kernel-rt

References

• CVE-2024-36017
• RHSA-2024:5066
• RHSA-2024:5067
• RHSA-2024:5101
• RHSA-2024:5102
• RHSA-2024:5363
• RHSA-2024:6206

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