CVE-2026-31673
Full vulnerability record from the local CVENow database.
Description
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.
Severity
HIGH
CVSS score
7.8
(v3.1)
Vulnerability status
Modified
Source identifier
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Published
2026-04-25 09:16:00.423000
Last modified
2026-10-19 19:18:05.163000
View original CVE JSON
{
"id": "CVE-2026-31673",
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"published": "2026-04-25T09:16:00.423",
"lastModified": "2026-10-19T19:18:05.163",
"vulnStatus": "Modified",
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"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\naf_unix: read UNIX_DIAG_VFS data under unix_state_lock\n\nExact UNIX diag lookups hold a reference to the socket, but not to\nu->path. Meanwhile, unix_release_sock() clears u->path under\nunix_state_lock() and drops the path reference after unlocking.\n\nRead the inode and device numbers for UNIX_DIAG_VFS while holding\nunix_state_lock(), then emit the netlink attribute after dropping the\nlock.\n\nThis keeps the VFS data stable while the reply is being built."
}
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