发布于3月6日3月6日 Members Ubuntu: (Multiple Advisories) (CVE-2024-35960): Linux kernel vulnerabilities Severity 4 CVSS (AV:L/AC:M/Au:N/C:P/I:P/A:P) Published 05/20/2024 Created 07/12/2024 Added 07/12/2024 Modified 09/20/2024 Description In the Linux kernel, the following vulnerability has been resolved: net/mlx5: Properly link new fs rules into the tree Previously, add_rule_fg would only add newly created rules from the handle into the tree when they had a refcount of 1. On the other hand, create_flow_handle tries hard to find and reference already existing identical rules instead of creating new ones. These two behaviors can result in a situation where create_flow_handle 1) creates a new rule and references it, then 2) in a subsequent step during the same handle creation references it again, resulting in a rule with a refcount of 2 that is not linked into the tree, will have a NULL parent and root and will result in a crash when the flow group is deleted because del_sw_hw_rule, invoked on rule deletion, assumes node->parent is != NULL. This happened in the wild, due to another bug related to incorrect handling of duplicate pkt_reformat ids, which lead to the code in create_flow_handle incorrectly referencing a just-added rule in the same flow handle, resulting in the problem described above. Full details are at [1]. This patch changes add_rule_fg to add new rules without parents into the tree, properly initializing them and avoiding the crash. This makes it more consistent with how rules are added to an FTE in create_flow_handle. Solution(s) ubuntu-upgrade-linux-image-5-15-0-1035-xilinx-zynqmp ubuntu-upgrade-linux-image-5-15-0-1048-gkeop ubuntu-upgrade-linux-image-5-15-0-1058-ibm ubuntu-upgrade-linux-image-5-15-0-1058-raspi ubuntu-upgrade-linux-image-5-15-0-1060-intel-iotg ubuntu-upgrade-linux-image-5-15-0-1060-nvidia ubuntu-upgrade-linux-image-5-15-0-1060-nvidia-lowlatency ubuntu-upgrade-linux-image-5-15-0-1062-gke ubuntu-upgrade-linux-image-5-15-0-1062-kvm ubuntu-upgrade-linux-image-5-15-0-1063-oracle ubuntu-upgrade-linux-image-5-15-0-1064-gcp ubuntu-upgrade-linux-image-5-15-0-1065-aws ubuntu-upgrade-linux-image-5-15-0-1065-gcp ubuntu-upgrade-linux-image-5-15-0-1068-azure ubuntu-upgrade-linux-image-5-15-0-1068-azure-fde ubuntu-upgrade-linux-image-5-15-0-116-generic ubuntu-upgrade-linux-image-5-15-0-116-generic-64k ubuntu-upgrade-linux-image-5-15-0-116-generic-lpae ubuntu-upgrade-linux-image-5-15-0-116-lowlatency ubuntu-upgrade-linux-image-5-15-0-116-lowlatency-64k ubuntu-upgrade-linux-image-5-4-0-1040-iot ubuntu-upgrade-linux-image-5-4-0-1047-xilinx-zynqmp ubuntu-upgrade-linux-image-5-4-0-1075-ibm ubuntu-upgrade-linux-image-5-4-0-1088-bluefield ubuntu-upgrade-linux-image-5-4-0-1095-gkeop ubuntu-upgrade-linux-image-5-4-0-1112-raspi ubuntu-upgrade-linux-image-5-4-0-1116-kvm ubuntu-upgrade-linux-image-5-4-0-1127-oracle ubuntu-upgrade-linux-image-5-4-0-1128-aws ubuntu-upgrade-linux-image-5-4-0-1132-gcp ubuntu-upgrade-linux-image-5-4-0-1133-azure ubuntu-upgrade-linux-image-5-4-0-189-generic ubuntu-upgrade-linux-image-5-4-0-189-generic-lpae ubuntu-upgrade-linux-image-5-4-0-189-lowlatency ubuntu-upgrade-linux-image-6-8-0-1006-gke ubuntu-upgrade-linux-image-6-8-0-1007-intel ubuntu-upgrade-linux-image-6-8-0-1007-raspi ubuntu-upgrade-linux-image-6-8-0-1008-ibm ubuntu-upgrade-linux-image-6-8-0-1008-oem ubuntu-upgrade-linux-image-6-8-0-1008-oracle ubuntu-upgrade-linux-image-6-8-0-1008-oracle-64k ubuntu-upgrade-linux-image-6-8-0-1009-nvidia ubuntu-upgrade-linux-image-6-8-0-1009-nvidia-64k ubuntu-upgrade-linux-image-6-8-0-1010-azure ubuntu-upgrade-linux-image-6-8-0-1010-azure-fde ubuntu-upgrade-linux-image-6-8-0-1010-gcp ubuntu-upgrade-linux-image-6-8-0-1011-aws ubuntu-upgrade-linux-image-6-8-0-38-generic ubuntu-upgrade-linux-image-6-8-0-38-generic-64k ubuntu-upgrade-linux-image-6-8-0-38-lowlatency ubuntu-upgrade-linux-image-6-8-0-38-lowlatency-64k ubuntu-upgrade-linux-image-aws ubuntu-upgrade-linux-image-aws-lts-20-04 ubuntu-upgrade-linux-image-aws-lts-22-04 ubuntu-upgrade-linux-image-azure ubuntu-upgrade-linux-image-azure-cvm ubuntu-upgrade-linux-image-azure-fde ubuntu-upgrade-linux-image-azure-fde-lts-22-04 ubuntu-upgrade-linux-image-azure-lts-20-04 ubuntu-upgrade-linux-image-azure-lts-22-04 ubuntu-upgrade-linux-image-bluefield ubuntu-upgrade-linux-image-gcp ubuntu-upgrade-linux-image-gcp-lts-20-04 ubuntu-upgrade-linux-image-gcp-lts-22-04 ubuntu-upgrade-linux-image-generic ubuntu-upgrade-linux-image-generic-64k ubuntu-upgrade-linux-image-generic-64k-hwe-20-04 ubuntu-upgrade-linux-image-generic-64k-hwe-24-04 ubuntu-upgrade-linux-image-generic-hwe-18-04 ubuntu-upgrade-linux-image-generic-hwe-20-04 ubuntu-upgrade-linux-image-generic-hwe-24-04 ubuntu-upgrade-linux-image-generic-lpae ubuntu-upgrade-linux-image-generic-lpae-hwe-20-04 ubuntu-upgrade-linux-image-gke ubuntu-upgrade-linux-image-gke-5-15 ubuntu-upgrade-linux-image-gkeop ubuntu-upgrade-linux-image-gkeop-5-15 ubuntu-upgrade-linux-image-gkeop-5-4 ubuntu-upgrade-linux-image-ibm ubuntu-upgrade-linux-image-ibm-classic ubuntu-upgrade-linux-image-ibm-lts-20-04 ubuntu-upgrade-linux-image-ibm-lts-24-04 ubuntu-upgrade-linux-image-intel ubuntu-upgrade-linux-image-intel-iotg ubuntu-upgrade-linux-image-kvm ubuntu-upgrade-linux-image-lowlatency ubuntu-upgrade-linux-image-lowlatency-64k ubuntu-upgrade-linux-image-lowlatency-64k-hwe-20-04 ubuntu-upgrade-linux-image-lowlatency-hwe-18-04 ubuntu-upgrade-linux-image-lowlatency-hwe-20-04 ubuntu-upgrade-linux-image-nvidia ubuntu-upgrade-linux-image-nvidia-64k ubuntu-upgrade-linux-image-nvidia-lowlatency ubuntu-upgrade-linux-image-oem ubuntu-upgrade-linux-image-oem-20-04 ubuntu-upgrade-linux-image-oem-20-04b ubuntu-upgrade-linux-image-oem-20-04c ubuntu-upgrade-linux-image-oem-20-04d ubuntu-upgrade-linux-image-oem-24-04 ubuntu-upgrade-linux-image-oem-24-04a ubuntu-upgrade-linux-image-oem-osp1 ubuntu-upgrade-linux-image-oracle ubuntu-upgrade-linux-image-oracle-64k ubuntu-upgrade-linux-image-oracle-lts-20-04 ubuntu-upgrade-linux-image-oracle-lts-22-04 ubuntu-upgrade-linux-image-raspi ubuntu-upgrade-linux-image-raspi-hwe-18-04 ubuntu-upgrade-linux-image-raspi-nolpae ubuntu-upgrade-linux-image-raspi2 ubuntu-upgrade-linux-image-snapdragon-hwe-18-04 ubuntu-upgrade-linux-image-virtual ubuntu-upgrade-linux-image-virtual-hwe-18-04 ubuntu-upgrade-linux-image-virtual-hwe-20-04 ubuntu-upgrade-linux-image-virtual-hwe-24-04 ubuntu-upgrade-linux-image-xilinx-zynqmp References https://attackerkb.com/topics/cve-2024-35960 CVE - 2024-35960 USN-6893-1 USN-6893-2 USN-6893-3 USN-6896-1 USN-6896-2 USN-6896-3 USN-6896-4 USN-6896-5 USN-6898-1 USN-6898-2 USN-6898-3 USN-6898-4 USN-6917-1 USN-6918-1 USN-6919-1 USN-6927-1 USN-7019-1 View more
