CVE-2024-46859
Linux
CVE-2024-46859: Fixes out-of-bounds access issues in the Linux kernel's Panasonic laptop driver. This vulnerability, stemming from insufficient bounds checking in the SINF array handling, can lead to system instability. While the CVSS score is 7.8, the SOCRadar Vulnerability Risk Score (SVRS) is 70, indicating a significant risk. The vulnerability can occur because the driver attempts to access elements beyond the allocated size of the SINF array, especially on older models like the Toughbook CF-18. The patch ensures that the driver checks the SINF array size before accessing its elements, preventing out-of-bounds reads and writes. The fix validates that the array has enough entries for brightness settings and mutes, and hides sysfs attributes if not supported, avoiding out-of-bounds accesses in show(), store(), probe(), and resume() functions. Although the CVSS may seem moderate, the SVRS highlights an elevated threat due to potential exploitation and the CWE-129 classification.
Description:
CVE-2024-46859 is a vulnerability in the Linux kernel that could allow an attacker to cause a denial of service (DoS) or execute arbitrary code on a vulnerable system. The vulnerability exists in the panasonic laptop code, which uses the SINF array with index values of 0 - SINF_CUR_BRIGHT(0x0d) without checking that the SINF array is big enough. This could allow an attacker to access the SINF array out of bounds, which could lead to a DoS or arbitrary code execution.
Key Insights:
- The CVSS score for this vulnerability is 0, which indicates that it is a low-severity vulnerability. However, the SVRS score of 34 indicates that this vulnerability is still a moderate risk to organizations.
- This vulnerability could be exploited by an attacker to cause a DoS or execute arbitrary code on a vulnerable system.
- There are no known active exploits for this vulnerability at this time.
Mitigation Strategies:
- Update to the latest version of the Linux kernel.
- Disable the panasonic laptop code if it is not needed.
- Restrict access to the vulnerable system from untrusted networks.
Additional Information:
- The Cybersecurity and Infrastructure Security Agency (CISA) has not issued a warning for this vulnerability.
- This vulnerability is not known to be used in the wild at this time.
If users have additional queries regarding this incident, they can use the 'Ask to Analyst' feature, contact SOCRadar directly, or open a support ticket for more information if necessary.
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CWE Details
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