CVE-2026-89609 (CVSS 7.8)

Description

In the Linux kernel, the following vulnerability has been resolved: ecryptfs: hold msg ctx list lock when cleaning daemon queue ecryptfs_exorcise_daemon() drops queued messages from a dying daemon without holding ecryptfs_msg_ctx_lists_mux, but ecryptfs_msg_ctx_alloc_to_free() requires that lock. Take the list lock while moving the queued contexts back to the free list to avoid racing with other global msg ctx list users.

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CVSS v3.1 Score

7.8

HIGH

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

EPSS — Exploit Prediction

0.0018

Probability of exploitation

0.07%

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/0d9636ecba34bd553ecf19049f7705505aea62fd https://git.kernel.org/stable/c/4c02acbe0a2692ca9991c51e62bbe6d6b59dac31 https://git.kernel.org/stable/c/4d50b8aea11ad9594c8704a4c647e11311ab7b19 https://git.kernel.org/stable/c/64d8998e36cfd2bb7114f3af0aa51c5a559a39b3 https://git.kernel.org/stable/c/779972513c2fa8c7938e54976f686091dafff22f https://git.kernel.org/stable/c/7e48afafe7abc275f7b6916613bb18b821e7d94a https://git.kernel.org/stable/c/956541efd125a10442f9514668bc5c852702c93b https://git.kernel.org/stable/c/ec1627bcb5b51ddd46b1ef27a9d5a9834abb0a6a

Frequently Asked Questions

What is CVE-2026-89609? +

In the Linux kernel, the following vulnerability has been resolved: ecryptfs: hold msg ctx list lock when cleaning daemon queue ecryptfs_exorcise_daemon() drops queued messages from a dying daemon without holding ecryptfs_msg_ctx_lists_mux, but ecryptfs_msg_ctx_alloc_to_free() requires that lock. Take the list lock while moving the queued contexts back to the free list to avoid racing with other global msg ctx list users. It has a CVSS v3.1 base score of 7.8 (HIGH).

How severe is CVE-2026-89609? +

CVE-2026-89609 has a CVSS v3.1 score of 7.8 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching. The EPSS score is 0.0018, placing it in the 0th percentile for exploitation probability.

How do I check if I'm vulnerable to CVE-2026-89609? +

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-2026-89609