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.

No CVSS v4.0

Attack Vector Local

Attack Complexity High

Privileges Required Low

Scope Unchanged

Confidentiality Impact None

Integrity Impact Low

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
Linux Linux unaffected
Version Status Constraints
f66e883eb6186bc43a79581b67aff7d1a69d0ff1 affected < 7e48afafe7abc275f7b6916613bb18b821e7d94a
f66e883eb6186bc43a79581b67aff7d1a69d0ff1 affected < 0d9636ecba34bd553ecf19049f7705505aea62fd
f66e883eb6186bc43a79581b67aff7d1a69d0ff1 affected < 4c02acbe0a2692ca9991c51e62bbe6d6b59dac31
f66e883eb6186bc43a79581b67aff7d1a69d0ff1 affected < 779972513c2fa8c7938e54976f686091dafff22f
Linux Linux affected
Version Status Constraints
2.6.26 affected —
0 unaffected < 2.6.26
6.12.109 unaffected ≤ 6.12.*
6.18.50 unaffected ≤ 6.18.*
7.2.4 unaffected ≤ 7.2.*
7.3-rc1 unaffected ≤ *

No data.

No data.

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Advisories

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Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://git.kernel.org/stable/c/0d9636ecba34bd553ecf19049f7705505aea62fd cve-icon cve-icon cve-icon
https://git.kernel.org/stable/c/4c02acbe0a2692ca9991c51e62bbe6d6b59dac31 cve-icon cve-icon cve-icon
https://git.kernel.org/stable/c/779972513c2fa8c7938e54976f686091dafff22f cve-icon cve-icon cve-icon
https://git.kernel.org/stable/c/7e48afafe7abc275f7b6916613bb18b821e7d94a cve-icon cve-icon cve-icon
https://nvd.nist.gov/vuln/detail/CVE-2026-89609 cve-icon
https://www.cve.org/CVERecord?id=CVE-2026-89609 cve-icon
History

Sat, 12 Sep 2026 00:15:00 +0000

Type Values Removed Values Added
Weaknesses CWE-820
References
Metrics threat_severity

None

 cvssV3_1

{'score': 5.3, 'vector': 'CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:H'}

threat_severity

Moderate

Fri, 11 Sep 2026 23:45:00 +0000

Type Values Removed Values Added
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.
Title ecryptfs: hold msg ctx list lock when cleaning daemon queue
First Time appeared Linux
Linux linux Kernel
CPEs cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Vendors & Products Linux
Linux linux Kernel
References

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: Linux

Published:

Updated: 2026-09-11T19:45:11.086Z

Reserved: 2026-09-11T19:38:34.734Z

Link: CVE-2026-89609

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-09-11T20:19:45.983

Modified: 2026-09-11T20:19:45.983

Link: CVE-2026-89609

cve-icon Redhat

Severity : Moderate

Publid Date: 2026-09-11T19:45:11Z

Links: CVE-2026-89609 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2026-09-12T06:45:10Z

Weaknesses