CVE-2024-57948
CVE-2024-57948 is a vulnerability in the Linux kernel's mac802154 subsystem, specifically affecting the handling of IEEE 802.15.4 network interfaces. This issue stems from a race condition when removing an IEEE 802.15.4 network interface, potentially leading to a corrupted list and kernel panic. The vulnerability involves a corrupted list in ieee802154_if_remove.
This linux kernel flaw can be triggered when an IEEE 802.15.4 hardware device is unregistered, leading to a race condition during the removal of the network interface. A fix has been implemented to check local interfaces before deleting the sdata list, preventing the kernel panic. With a SVRS of 30, while not immediately critical, this vulnerability should be addressed in a timely manner to prevent potential system instability. The original CVSS score is 0. Systems running affected Linux kernel versions should apply the provided patch to mitigate the risk of this race condition and potential denial-of-service scenarios.
Description
CVE-2024-57948 is a vulnerability found in the Linux kernel's mac802154 driver, which manages IEEE 802.15.4 network interfaces. This vulnerability arises from a race condition during the removal of interfaces. If an IEEE 802.15.4 hardware device is unregistered from the system while a network interface is still in use, the kernel may attempt to delete the interface's data structure before it is fully removed, leading to a kernel crash.
The vulnerability's SVRS (SOCRadar Vulnerability Risk Score) is 30, indicating a moderate risk. This score, based on the SVRS's holistic analysis, reflects the potential impact of a crash but also considers factors like the exploitation difficulty and the widespread use of the affected components.
Key Insights
- Kernel Crash: CVE-2024-57948 can cause the Linux kernel to crash due to a corrupted data structure. This could lead to system instability and downtime, disrupting critical services and applications.
- Race Condition: The vulnerability stems from a race condition where the hardware device unregistration and interface removal happen concurrently without proper synchronization. This can lead to unexpected behavior and potential system failures.
- Syzkaller Discovery: The vulnerability was discovered using the syzkaller fuzzer, which systematically tests the kernel for potential security flaws. This suggests that other vulnerabilities may exist in the Linux kernel and should be actively searched for.
- Potential for Exploitation: While the CVSS score is 0, the SVRS score of 30 suggests that the vulnerability could be exploited by skilled attackers, especially those familiar with kernel internals.
Mitigation Strategies
- Apply the Patch: The Linux kernel maintainers have released a patch to address this vulnerability. Applying this patch promptly is the most effective mitigation strategy.
- Upgrade Kernel Version: If updating the kernel to the patched version is not immediately feasible, consider upgrading to a more recent version of the kernel that incorporates the fix.
- Minimize Unnecessary Interface Removals: Carefully manage the removal of IEEE 802.15.4 network interfaces, particularly in environments where hardware devices are frequently added or removed.
- Monitor for Exploits: Actively monitor for any signs of exploitation attempts related to CVE-2024-57948. This includes analyzing system logs, network traffic, and security alerts.
Additional Information
If users have any further questions regarding this vulnerability or incident, they can utilize the 'Ask to Analyst' feature, contact SOCRadar directly, or open a support ticket for further assistance.
Indicators of Compromise
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Affected Software
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CWE Details
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