CVE-2026-31673
af_unix: read UNIX_DIAG_VFS data under unix_state_lock
CVSS Score
7.8
EPSS Score
0.0%
EPSS Percentile
0th
In the Linux kernel, the following vulnerability has been resolved: af_unix: read UNIX_DIAG_VFS data under unix_state_lock Exact UNIX diag lookups hold a reference to the socket, but not to u->path. Meanwhile, unix_release_sock() clears u->path under unix_state_lock() and drops the path reference after unlocking. Read the inode and device numbers for UNIX_DIAG_VFS while holding unix_state_lock(), then emit the netlink attribute after dropping the lock. This keeps the VFS data stable while the reply is being built.
| Vendor | linux |
| Product | linux |
| Ecosystems | |
| Industries | Technology |
| Published | Apr 25, 2026 |
| Last Updated | Jun 1, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Affected Versions
Linux / Linux
5f7b0569460b7d8d01ca776430a00505a68b7584 < e7339db13b9ddb63417b12da55fd6191e59f7442 5f7b0569460b7d8d01ca776430a00505a68b7584 < 4f6a8f10182c3a9d22e8eb183957ae7ade9e4bf7 5f7b0569460b7d8d01ca776430a00505a68b7584 < c3ec44ab4526bbc4b6c9fc845af86488244f4c9b 5f7b0569460b7d8d01ca776430a00505a68b7584 < b9232421a77a649c9376c99fdfc8cb7f79cad34c 5f7b0569460b7d8d01ca776430a00505a68b7584 < 0c739f3785f84af695952c2bac8be2f45082c9b8 5f7b0569460b7d8d01ca776430a00505a68b7584 < 900a4e0910e98b8caef117d5df00471fa438dcf9 5f7b0569460b7d8d01ca776430a00505a68b7584 < bdf206e740bf2919d818f132c8c9cc7ed91d11c0 5f7b0569460b7d8d01ca776430a00505a68b7584 < 39897df386376912d561d4946499379effa1e7ef
Linux / Linux
3.3
References
git.kernel.org: https://git.kernel.org/stable/c/e7339db13b9ddb63417b12da55fd6191e59f7442 git.kernel.org: https://git.kernel.org/stable/c/4f6a8f10182c3a9d22e8eb183957ae7ade9e4bf7 git.kernel.org: https://git.kernel.org/stable/c/c3ec44ab4526bbc4b6c9fc845af86488244f4c9b git.kernel.org: https://git.kernel.org/stable/c/b9232421a77a649c9376c99fdfc8cb7f79cad34c git.kernel.org: https://git.kernel.org/stable/c/0c739f3785f84af695952c2bac8be2f45082c9b8 git.kernel.org: https://git.kernel.org/stable/c/900a4e0910e98b8caef117d5df00471fa438dcf9 git.kernel.org: https://git.kernel.org/stable/c/bdf206e740bf2919d818f132c8c9cc7ed91d11c0 git.kernel.org: https://git.kernel.org/stable/c/39897df386376912d561d4946499379effa1e7ef