High severity · published Sep 11, 2026
CVE-2026-89609
ecryptfs: hold msg ctx list lock when cleaning daemon queue
7.8
CVSS
0.2%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 7% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
LI
Linux · Linux
f66e883eb6186bc43a79581b67aff7d1a69d0ff1 before 64d8998e36cfd2bb7114f3af0aa51c5a559a39b3; f66e883eb6186bc43a79581b67aff7d1a69d0ff1 before 4d50b8aea11ad9594c8704a4c647e11311ab7b19; f66e883eb6186bc43a79581b67aff7d1a69d0ff1 before 956541efd125a10442f9514668bc5c852702c93b; f66e883eb6186bc43a79581b67aff7d1a69d0ff1 before ec1627bcb5b51ddd46b1ef27a9d5a9834abb0a6a; f66e883eb6186bc43a79581b67aff7d1a69d0ff1 before 7e48afafe7abc275f7b6916613bb18b821e7d94a; f66e883eb6186bc43a79581b67aff7d1a69d0ff1 before 0d9636ecba34bd553ecf19049f7705505aea62fd; +3 more · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-89609
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-89609
git.kernel.org
https://git.kernel.org/stable/c/0d9636ecba34bd553ecf19049f7705505aea62fd
git.kernel.org
https://git.kernel.org/stable/c/4c02acbe0a2692ca9991c51e62bbe6d6b59dac31
git.kernel.org
https://git.kernel.org/stable/c/4d50b8aea11ad9594c8704a4c647e11311ab7b19
git.kernel.org
https://git.kernel.org/stable/c/64d8998e36cfd2bb7114f3af0aa51c5a559a39b3
git.kernel.org
https://git.kernel.org/stable/c/779972513c2fa8c7938e54976f686091dafff22f
git.kernel.org
https://git.kernel.org/stable/c/7e48afafe7abc275f7b6916613bb18b821e7d94a
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