CVE-2026-72219 (GCVE-0-2026-72219)

Vulnerability from cvelistv5 – Published: 2026-08-15 05:54 – Updated: 2026-08-17 05:10
VLAI
Title
lockd: Plug nlm_file leak when nlm_do_fopen() fails
Summary
In the Linux kernel, the following vulnerability has been resolved: lockd: Plug nlm_file leak when nlm_do_fopen() fails A client can repeatedly drive nlm_do_fopen() failures by presenting file handles that the underlying export rejects. After kzalloc_obj() succeeds in nlm_lookup_file(), the freshly allocated nlm_file is not yet inserted into nlm_files[]. The nlm_do_fopen() failure path jumps to out_unlock, which releases nlm_file_mutex and returns without freeing the allocation, so each failure leaks one nlm_file. Route the failure through out_free so kfree() runs before the function returns.
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: e580323ac0b51ad10ec2e181d1f777479b7983e7 , < bca74fff138429f3d5802865f38fc883d53a4f1a (git)
Affected: 7f024fcd5c97dc70bb9121c80407cf3cf9be7159 , < d7c677feb3aa1f42b1026d75a8ea61338b51e4fb (git)
Affected: 7f024fcd5c97dc70bb9121c80407cf3cf9be7159 , < 39f59bf67231ed2eb0cdf6337194360e964b609a (git)
Affected: 7f024fcd5c97dc70bb9121c80407cf3cf9be7159 , < ddfbd816273b4e9c9b836f5b8773664c6f40f807 (git)
Affected: 7f024fcd5c97dc70bb9121c80407cf3cf9be7159 , < 1403f1221a35a6caf959bb7bf005741f17263c66 (git)
Affected: 7f024fcd5c97dc70bb9121c80407cf3cf9be7159 , < 1161c4b5bd0048c8148e919f818a33cff3623ef0 (git)
Affected: 7f024fcd5c97dc70bb9121c80407cf3cf9be7159 , < 3f2dc01b9cb516d4727a3b9263ee58c71ca00ba9 (git)
Affected: 7f024fcd5c97dc70bb9121c80407cf3cf9be7159 , < f16a1513452edb532fec81e591c64c320866719c (git)
Affected: 5.10.220 , < 5.10.261 (semver)
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Linux Linux Affected: 5.15
Unaffected: 0 , < 5.15 (semver)
Unaffected: 5.10.261 , ≤ 5.10.* (semver)
Unaffected: 5.15.212 , ≤ 5.15.* (semver)
Unaffected: 6.1.178 , ≤ 6.1.* (semver)
Unaffected: 6.6.145 , ≤ 6.6.* (semver)
Unaffected: 6.12.97 , ≤ 6.12.* (semver)
Unaffected: 6.18.40 , ≤ 6.18.* (semver)
Unaffected: 7.1.5 , ≤ 7.1.* (semver)
Unaffected: 7.2 , ≤ * (original_commit_for_fix)
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    "datePublished": "2026-08-15T05:54:13.067Z",
    "dateReserved": "2026-08-09T03:40:39.913Z",
    "dateUpdated": "2026-08-17T05:10:34.296Z",
    "state": "PUBLISHED"
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The nlm_do_fopen() failure path jumps\\nto out_unlock, which releases nlm_file_mutex and returns without\\nfreeing the allocation, so each failure leaks one nlm_file.\\n\\nRoute the failure through out_free so kfree() runs before the\\nfunction returns.\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"fs/lockd/svcsubs.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"e580323ac0b51ad10ec2e181d1f777479b7983e7\",\"lessThan\":\"bca74fff138429f3d5802865f38fc883d53a4f1a\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"7f024fcd5c97dc70bb9121c80407cf3cf9be7159\",\"lessThan\":\"d7c677feb3aa1f42b1026d75a8ea61338b51e4fb\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"7f024fcd5c97dc70bb9121c80407cf3cf9be7159\",\"lessThan\":\"39f59bf67231ed2eb0cdf6337194360e964b609a\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"7f024fcd5c97dc70bb9121c80407cf3cf9be7159\",\"lessThan\":\"ddfbd816273b4e9c9b836f5b8773664c6f40f807\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"7f024fcd5c97dc70bb9121c80407cf3cf9be7159\",\"lessThan\":\"1403f1221a35a6caf959bb7bf005741f17263c66\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"7f024fcd5c97dc70bb9121c80407cf3cf9be7159\",\"lessThan\":\"1161c4b5bd0048c8148e919f818a33cff3623ef0\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"7f024fcd5c97dc70bb9121c80407cf3cf9be7159\",\"lessThan\":\"3f2dc01b9cb516d4727a3b9263ee58c71ca00ba9\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"7f024fcd5c97dc70bb9121c80407cf3cf9be7159\",\"lessThan\":\"f16a1513452edb532fec81e591c64c320866719c\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"5.10.220\",\"lessThan\":\"5.10.261\",\"versionType\":\"semver\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"fs/lockd/svcsubs.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"5.15\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"5.15\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.10.261\",\"lessThanOrEqual\":\"5.10.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.15.212\",\"lessThanOrEqual\":\"5.15.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.1.178\",\"lessThanOrEqual\":\"6.1.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.6.145\",\"lessThanOrEqual\":\"6.6.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.12.97\",\"lessThanOrEqual\":\"6.12.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.18.40\",\"lessThanOrEqual\":\"6.18.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"7.1.5\",\"lessThanOrEqual\":\"7.1.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"7.2\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/1161c4b5bd0048c8148e919f818a33cff3623ef0\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/1403f1221a35a6caf959bb7bf005741f17263c66\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/39f59bf67231ed2eb0cdf6337194360e964b609a\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/3f2dc01b9cb516d4727a3b9263ee58c71ca00ba9\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/bca74fff138429f3d5802865f38fc883d53a4f1a\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/d7c677feb3aa1f42b1026d75a8ea61338b51e4fb\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/ddfbd816273b4e9c9b836f5b8773664c6f40f807\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/f16a1513452edb532fec81e591c64c320866719c\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}",
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-08-18T16:29:29+00:00",
      "cve": "CVE-2026-72219",
      "id": "CVE-2026-72219",
      "initial_release_date": "2026-08-15T00:00:00+00:00",
      "product_status:known_affected": "184",
      "product_status:known_not_affected": "90",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: lockd: Plug nlm_file leak when nlm_do_fopen() fails",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-72219.json",
      "version": "3"
    }
  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.