CVE-2024-53100
Description
A flaw was found in the Linux kernel's NVMe over TCP (Non-Volatile Memory Express over Transmission Control Protocol) driver. A race condition can occur between locking and destroying queue resources when querying address information during error recovery. A local user could exploit this timing issue to cause a kernel crash, resulting in a Denial of Service (DoS).
Mitigation
To mitigate this vulnerability, prevent the `nvme-tcp` kernel module from being loaded if NVMe over TCP storage is not required.
1. Blacklist the module by executing the following commands as root:
text
echo "blacklist nvme-tcp" > /etc/modprobe.d/nvme-tcp.conf
echo "install nvme-tcp /bin/true" >> /etc/modprobe.d/nvme-tcp.conf
2. If the module is currently loaded and not in active use, unload it:
text
modprobe -r nvme-tcp
Warning: If the module is actively in use by attached NVMe storage devices, unloading it will disrupt storage connectivity, and a system reboot will be required for the configuration changes to take effect. Applying this mitigation will prevent the system from establishing connections to NVMe over Fabrics devices using TCP.
Common Vulnerability Scoring System (CVSS) Score Details
Info alert:Important note
CVSS scores for open source components depend on vendor-specific factors (e.g. version or build chain). Therefore, Red Hat's score and impact rating can be different from NVD and other vendors. Red Hat remains the authoritative CVE Naming Authority (CNA) source for its products and services (see Red Hat classifications).
The following CVSS metrics and score provided are preliminary and subject to review.
CVSS v3 Score Breakdown
| Red Hat | NVD | cve.org | |
|---|---|---|---|
| Base Score | 4.7 | 4.7 | 7.8 |
| Attack Vector | Local | Local | Local |
| Attack Complexity | High | High | Low |
| Privileges Required | Low | Low | Low |
| User Interaction | None | None | None |
| Scope | Unchanged | Unchanged | Unchanged |
| Confidentiality | None | None | High |
| Integrity Impact | None | None | High |
| Availability Impact | High | High | High |
Vector
Red Hat: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
NVD: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
cve.org: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Understanding the Weakness (CWE)
Availability
Technical Impact: DoS: Resource Consumption (CPU); DoS: Resource Consumption (Memory); DoS: Resource Consumption (Other)
When a race condition makes it possible to bypass a resource cleanup routine or trigger multiple initialization routines, it may lead to resource exhaustion.
Availability
Technical Impact: DoS: Crash, Exit, or Restart; DoS: Instability
When a race condition allows multiple control flows to access a resource simultaneously, it might lead the product(s) into unexpected states, possibly resulting in a crash.
Confidentiality,Integrity
Technical Impact: Read Files or Directories; Read Application Data
When a race condition is combined with predictable resource names and loose permissions, it may be possible for an attacker to overwrite or access confidential data (CWE-59).
Access Control
Technical Impact: Execute Unauthorized Code or Commands; Gain Privileges or Assume Identity; Bypass Protection Mechanism
This can have security implications when the expected synchronization is in security-critical code, such as recording whether a user is authenticated or modifying important state information that should not be influenced by an outsider.
Frequently Asked Questions
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