CVE-2023-54071 is a vulnerability in the Linux kernel affecting the rtw88 driver. This vulnerability allows for potential issues during the update of rates, specifically due to the handling of the ieee80211_ops::sta_rc_update function. It is noted that the ieee80211_chan_bw_change() function holds an RCU read lock while invoking drv_sta_rc_update(), resulting in the need to create a work item to handle the necessary updates without causing context switches within the critical section.
The severity of this vulnerability is currently classified as unknown, and it is marked as deferred. Nonetheless, it is essential for organizations using affected versions of the Linux kernel to be aware of this issue as it could pose significant risks if not addressed properly.
Organizations should monitor this vulnerability closely and prepare for potential patches or updates from the Linux kernel maintainers. As of now, there is no known public exploit, and the urgency for remediation is low.
The risk to organizations includes potential instability in networking operations, which can be critical for performance and reliability in production environments. Awareness and proactive monitoring will be vital in mitigating any unforeseen impacts.
Vulnerability Details
The vulnerability is documented as follows: In the Linux kernel, the following vulnerability has been resolved: wifi: rtw88: use work to update rate to avoid RCU warning. The ieee80211_ops::sta_rc_update must be atomic, as ieee80211_chan_bw_change() holds an RCU read lock while calling drv_sta_rc_update().
The CVSS score is not available at this time, and the vulnerability is classified under the deferred status. The risk is assessed as low, with no known public exploits confirmed.
Technical Analysis
The root cause of CVE-2023-54071 stems from the improper handling of rate updates in the networking stack of the Linux kernel. The attack vector is unclear, but it involves interactions within the kernel's driver code, specifically with the rtw88 driver.
The attack complexity is considered low, as the vulnerability resides in kernel space, which is typically exploited by malicious actors with the appropriate privileges. There is no requirement for user interaction, meaning an attacker could exploit this vulnerability without user consent.
The potential impact on confidentiality, integrity, and availability remains uncertain due to the deferred status of this vulnerability.
Risk & Impact Analysis
The risk to organizations includes possible instability in network operations, which can affect performance and reliability. Given the low urgency and the deferred status, organizations may address this issue in their routine maintenance schedules.
Organizations should prioritize monitoring updates and potential patches related to this vulnerability, especially considering its implications on network performance.
Exploitation Status
Signal | Status |
|---|---|
Known Exploit | No |
Public PoC | No |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
All versions prior to vendor patch are affected. Organizations should ensure that they are running the latest kernel version and monitor for updates.
Mitigation & Remediation
Organizations should watch for patches released by the Linux kernel maintainers and apply them immediately when available. Regular updates to the kernel should be part of a proactive security strategy.
In addition, organizations may consider conducting security assessments and penetration testing to uncover potential vulnerabilities in their systems. For guidance on effective security testing, refer to the penetration testing services offered by AppSecure.
Detection Guidance
Organizations should monitor their systems for any unusual behavior or performance issues that may indicate exploitation of this vulnerability. Key indicators include log anomalies and unexpected system behavior related to network operations.
AppSecure Threat Intelligence Insight
The low EPSS score indicates a minimal probability of exploitation in the wild, but organizations should not be complacent. Regular security assessments can help identify and mitigate vulnerabilities before they are exploited.
For more information on vulnerability management best practices, consider reviewing our article on vulnerability management strategies.
Organizations should also stay informed about emerging threats and trends in cybersecurity by following our blog for the latest insights on topics such as penetration testing methodologies.
In summary, while CVE-2023-54071 is currently marked as deferred with a low urgency for remediation, organizations should maintain vigilance and prepare for any future developments regarding this vulnerability.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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