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CVE-2024-35960 Spoofing

Routine
Remediate Within 6 Months

CVE Information

Original CVE data

Published:
Updated:

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.

CWE:
CVSS v2-
CVSS v3-
References
https://git.kernel.org/stable/c/de0139719cdda82806a47580ca0df06fc85e0bd2
https://git.kernel.org/stable/c/1263b0b26077b1183c3c45a0a2479573a351d423
https://git.kernel.org/stable/c/3d90ca9145f6b97b38d0c2b6b30f6ca6af9c1801
https://git.kernel.org/stable/c/7aaee12b804c5e0374e7b132b6ec2158ff33dd64
https://git.kernel.org/stable/c/2e8dc5cffc844dacfa79f056dea88002312f253f
https://git.kernel.org/stable/c/5cf5337ef701830f173b4eec00a4f984adeb57a0
https://git.kernel.org/stable/c/adf67a03af39095f05d82050f15813d6f700159d
https://git.kernel.org/stable/c/7c6782ad4911cbee874e85630226ed389ff2e453
https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html
https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html
Affected Vendors

Basic Analysis

Common vulnerability metrics

Vulnerabilty type as detected by PRIOnengine

Spoofing

CVSS Scores as calculated by PRIOnengine
CVSS v25
AV:N/AC:L/AU:N/C:N/I:N/A:P
CVSS v38.1
AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
MITRE CWE Top 25

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Exploits

No exploit code is reported to exist.

Active Exploitation

Vulnerability is not in CISA's Known Exploited Vulnerabilities (KEV) catalog. See the KEV Catalog

Social Network Activity

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Threat Actor Activity

No sightings of the vulnerability within threat reports.

Cybersecurity Frameworks

How the vulnerability maps against various cybersecurity frameworks

T1499 - Endpoint Denial of Service
T1498 - Network Denial of Service
T1203 - Exploitation for Client Execution
T1059 - Command and Scripting Interpreter

Compliance Impact

How the submited vulnerability affects compliance

PCI DSS v3.2.1-6.5.5 - Improper Error Handling

Web Application Security Frameworks

Applicable if the issue likely affects a web application

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