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CVE-2026-89609

ecryptfs: hold msg ctx list lock when cleaning daemon queue

HIGH
7.8
CVSS Score
Published: September 11, 2026 at 07:45 PM UTC
Updated: October 19, 2026 at 09:17 AM UTC
1 product affected across 1 vendorLinux Kernel

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Severity
HIGH7.8
Exploit prediction
EPSS 0.2%

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Linux Kernel· Linux
90%
2.6.26f66e883eb6186bc43a79581b67aff7d1a69d0ff1
Vendor states this is fixed in 0d9636ecba34bd553ecf19049f7705505aea62fd (fixed)
Vendor states this is fixed in 4c02acbe0a2692ca9991c51e62bbe6d6b59dac31 (fixed)
Vendor states this is fixed in 4d50b8aea11ad9594c8704a4c647e11311ab7b19 (fixed)
Vendor states this is fixed in 64d8998e36cfd2bb7114f3af0aa51c5a559a39b3 (fixed)
Vendor states this is fixed in 779972513c2fa8c7938e54976f686091dafff22f (fixed)
Vendor states this is fixed in 7e48afafe7abc275f7b6916613bb18b821e7d94a (fixed)
Vendor states this is fixed in 956541efd125a10442f9514668bc5c852702c93b (fixed)
Vendor states this is fixed in ec1627bcb5b51ddd46b1ef27a9d5a9834abb0a6a (fixed)
Vendor states this is fixed in 2.6.26 (unaffected)
Vendor states this is fixed in 5.10.270 (unaffected)
Vendor states this is fixed in 5.15.221 (unaffected)
Vendor states this is fixed in 6.1.188 (unaffected)
Vendor states this is fixed in 6.12.109 (unaffected)
Vendor states this is fixed in 6.18.50 (unaffected)
Vendor states this is fixed in 6.6.157 (unaffected)
Vendor states this is fixed in 7.2.4 (unaffected)
Vendor states this is fixed in 7.3 (unaffected)
Vendor states this is fixed in 7.3-rc1 (unaffected)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (8)

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

CVSS

7.8HIGHLinux
Vector?

Quick Info

StatusRECEIVED

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