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In the Linux kernel, the following vulnerability has been resolved: lockd: Plug nlm_file refcount leak on cached nlm_do_fopen() failure The… (CVE-2026-72218)

0
Unknown
Published: 08/15/2026 (08/15/2026, 06:32:16 UTC)
Source: GCVE Database

Description

In the Linux kernel, the following vulnerability has been resolved: lockd: Plug nlm_file refcount leak on cached nlm_do_fopen() failure The cached-file path in nlm_lookup_file() reaches the found: label unconditionally, even when nlm_do_fopen() fails. At that label *result and file->f_count are updated before the error is returned. The wrappers nlm3svc_lookup_file() and nlm4svc_lookup_file() then bail out of their switch without copying *result back to their caller, so the proc handler's local nlm_file pointer remains NULL and the cleanup path skips nlm_release_file(). The f_count increment is never released, and nlm_traverse_files() can no longer reap the file because its refcount never returns to zero between requests. Short-circuit the cached path so neither *result nor f_count is touched when nlm_do_fopen() fails on a hashed nlm_file.

Technical Details

Gcve Source
db.gcve.eu
Osv Id
GHSA-mwwg-vq2v-v2c8
Osv Schema Version
1.4.0
Aliases
["CVE-2026-72218"]
Ecosystems
[]
Database Specific Severity
null
Cvss Version
null

Threat ID: 6a808b73bf8831d5394fe0b6

Added to database: 08/15/2026, 15:53:23 UTC

Last updated: 08/15/2026, 15:54:49 UTC

Views: 1

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