CVE-2026-80646 (CVSS 7.5)

Description

In the Linux kernel, the following vulnerability has been resolved: ipv6: guard against possible NULL deref in __in6_dev_stats_get() dev_get_by_index_rcu() could return NULL if the original physical device is unregistered. Found by Sashiko.

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CVSS v3.1 Score

7.5

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS — Exploit Prediction

0.0072

Probability of exploitation

0.52%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

References

Other References

https://git.kernel.org/stable/c/0db1949084e85a72d174a7dea3259b94fe5a9305 https://git.kernel.org/stable/c/1a4adfbeb47a212a64539137411f1ca168474d33 https://git.kernel.org/stable/c/1e3db30a88815bae6e9d5db6f64ac735e615a07e https://git.kernel.org/stable/c/507541c2a8eeb76c02bd2511958f73a8cfa3e1bc https://git.kernel.org/stable/c/952426a83ca75cea25c09d58944abafaa3ebd242 https://git.kernel.org/stable/c/a23f2c68c6635e41404f189f8f7ae910738cebdb https://git.kernel.org/stable/c/e14db43677946bf2095febd294bb3c13ab375ab7 https://git.kernel.org/stable/c/fc920c0659cdea5afd8721c1155a51564859e075

Frequently Asked Questions

What is CVE-2026-80646? +

In the Linux kernel, the following vulnerability has been resolved: ipv6: guard against possible NULL deref in __in6_dev_stats_get() dev_get_by_index_rcu() could return NULL if the original physical device is unregistered. Found by Sashiko. It has a CVSS v3.1 base score of 7.5 (HIGH).

How severe is CVE-2026-80646? +

CVE-2026-80646 has a CVSS v3.1 score of 7.5 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching. The EPSS score is 0.0072, placing it in the 1th percentile for exploitation probability.

How do I check if I'm vulnerable to CVE-2026-80646? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

CVE-2026-80646