CVE-2026-89609
Published: September 15, 2026Last modified: September 28, 2026
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.
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 7.8 |
| Attack Vector | LOCAL |
| Attack complexity | LOW |
| Privileges required | LOW |
| User interaction | NONE |
| Scope | UNCHANGED |
| Confidentiality | HIGH |
| Integrity impact | HIGH |
| Availability impact | HIGH |
| Vector | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
Status
| Product | Release | Package | Status |
|---|---|---|---|
| Alpaquita Linux | 23 LTS | linux-lts | Vulnerable (6.1.182-r0) |
| 25 LTS | linux-lts | Fixed (6.12.111-r0) | |
| Stream | linux-lts | Fixed (6.18.53-r0) |
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