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CVE-2026-72109 (GCVE-0-2026-72109)

Vulnerability from cvelistv5 – Published: 2026-08-15 05:52 – Updated: 2026-08-17 05:40
VLAI
Title
net: sparx5: unregister blocking notifier on init failure
Summary
In the Linux kernel, the following vulnerability has been resolved: net: sparx5: unregister blocking notifier on init failure sparx5_register_notifier_blocks() registers the switchdev blocking notifier before allocating the ordered workqueue. If the workqueue allocation fails, the error path unregisters the switchdev and netdevice notifiers, but leaves the blocking notifier registered. Add a separate error label for the workqueue allocation failure path and unregister the switchdev blocking notifier there.
Severity
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: d6fce5141929697a27f029c633433d487f6f62cb , < fbc65b17508ed5464b7106e7fa5f15251ca1b603 (git)
Affected: d6fce5141929697a27f029c633433d487f6f62cb , < e5afc6d3fabdf1f605d63c4b34a3df6c359e81f3 (git)
Affected: d6fce5141929697a27f029c633433d487f6f62cb , < cf419c869e0d03aad4b6f4ecf0a813851930dfe7 (git)
Affected: d6fce5141929697a27f029c633433d487f6f62cb , < d6084c47389fd6978a5d66b0d58206a548c792a9 (git)
Affected: d6fce5141929697a27f029c633433d487f6f62cb , < 8a3c44a003176282ee4306b7c96e5a536c6f0707 (git)
Affected: d6fce5141929697a27f029c633433d487f6f62cb , < 17f113e7b622dc850992ade540181717de6a8561 (git)
Affected: d6fce5141929697a27f029c633433d487f6f62cb , < 483be61b4a9a6df3b7cb277e8f189e082dee4cb8 (git)
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Linux Linux Affected: 5.14
Unaffected: 0 , < 5.14 (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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{
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: sparx5: unregister blocking notifier on init failure\n\nsparx5_register_notifier_blocks() registers the switchdev blocking\nnotifier before allocating the ordered workqueue. If the workqueue\nallocation fails, the error path unregisters the switchdev and netdevice\nnotifiers, but leaves the blocking notifier registered.\n\nAdd a separate error label for the workqueue allocation failure path and\nunregister the switchdev blocking notifier there."
        }
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    "assignerShortName": "Linux",
    "cveId": "CVE-2026-72109",
    "datePublished": "2026-08-15T05:52:51.067Z",
    "dateReserved": "2026-08-09T03:40:39.906Z",
    "dateUpdated": "2026-08-17T05:40:22.667Z",
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If the workqueue\\nallocation fails, the error path unregisters the switchdev and netdevice\\nnotifiers, but leaves the blocking notifier registered.\\n\\nAdd a separate error label for the workqueue allocation failure path and\\nunregister the switchdev blocking notifier there.\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"drivers/net/ethernet/microchip/sparx5/sparx5_switchdev.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"d6fce5141929697a27f029c633433d487f6f62cb\",\"lessThan\":\"fbc65b17508ed5464b7106e7fa5f15251ca1b603\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"d6fce5141929697a27f029c633433d487f6f62cb\",\"lessThan\":\"e5afc6d3fabdf1f605d63c4b34a3df6c359e81f3\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"d6fce5141929697a27f029c633433d487f6f62cb\",\"lessThan\":\"cf419c869e0d03aad4b6f4ecf0a813851930dfe7\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"d6fce5141929697a27f029c633433d487f6f62cb\",\"lessThan\":\"d6084c47389fd6978a5d66b0d58206a548c792a9\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"d6fce5141929697a27f029c633433d487f6f62cb\",\"lessThan\":\"8a3c44a003176282ee4306b7c96e5a536c6f0707\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"d6fce5141929697a27f029c633433d487f6f62cb\",\"lessThan\":\"17f113e7b622dc850992ade540181717de6a8561\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"d6fce5141929697a27f029c633433d487f6f62cb\",\"lessThan\":\"483be61b4a9a6df3b7cb277e8f189e082dee4cb8\",\"versionType\":\"git\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"drivers/net/ethernet/microchip/sparx5/sparx5_switchdev.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"5.14\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"5.14\",\"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\":{\"cvssMetricV31\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H\",\"baseScore\":7.8,\"baseSeverity\":\"HIGH\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":5.9}]},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/17f113e7b622dc850992ade540181717de6a8561\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/483be61b4a9a6df3b7cb277e8f189e082dee4cb8\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/8a3c44a003176282ee4306b7c96e5a536c6f0707\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/cf419c869e0d03aad4b6f4ecf0a813851930dfe7\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/d6084c47389fd6978a5d66b0d58206a548c792a9\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/e5afc6d3fabdf1f605d63c4b34a3df6c359e81f3\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/fbc65b17508ed5464b7106e7fa5f15251ca1b603\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}",
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-08-17T22:21:57+00:00",
      "cve": "CVE-2026-72109",
      "id": "CVE-2026-72109",
      "initial_release_date": "2026-08-15T00:00:00+00:00",
      "product_status:known_not_affected": "274",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: net: sparx5: unregister blocking notifier on init failure",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-72109.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.