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CVE-2026-72120 (GCVE-0-2026-72120)

Vulnerability from cvelistv5 – Published: 2026-08-15 05:52 – Updated: 2026-08-17 05:40
VLAI
Title
can: bcm: add missing rcu list annotations and operations
Summary
In the Linux kernel, the following vulnerability has been resolved: can: bcm: add missing rcu list annotations and operations sashiko-bot remarked the missing use of list_add_rcu() in bcm_[rx|tx]_setup() to have a proper initialized bcm_op structure when bcm_proc_show() traverses the bcm_op's under rcu_read_lock(). To cover all initial settings of the bcm_op's the list_add_rcu() calls are moved to the end of the setup code. While at it, also fix the mirroring removal side: bcm_release() called bcm_remove_op() - which frees the op via call_rcu() - on ops that were still linked in bo->tx_ops/bo->rx_ops, without list_del_rcu() first. Unlink each op with list_del_rcu() before handing it to bcm_remove_op(), matching the existing pattern in bcm_delete_tx_op()/bcm_delete_rx_op().
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: 659701c0b954ccdb4a916a4ad59bbc16e726d42c , < 8357255e56dc1aaa437e3c53ee9385de984e0d57 (git)
Affected: 0622846db728a5332b917c797c733e202c4620ae , < 8e1c7257c81577130f5ce90f69b2a2c3ce63f957 (git)
Affected: 6d7d458c41b98a5c1670cbd36f2923c37de51cf5 , < eb1c26eab4d1f0b4450439b4b88c3e73faf1da98 (git)
Affected: 1f912f8484e9c4396378c39460bbea0af681f319 , < f53bdab85e64eb57d6899a30d1307fd5a3639cc7 (git)
Affected: 63567ecd99a24495208dc860d50fb17440043006 , < 4e22e8b505f877573bbdfdbcb680babad9b2f7a1 (git)
Affected: dac5e6249159ac255dad9781793dbe5908ac9ddb , < b06a4a397ac826603f39875cb7c7819a41365196 (git)
Affected: dac5e6249159ac255dad9781793dbe5908ac9ddb , < 30f7bb922cb7e7f072a56c7cb7a5efccd2ceca1d (git)
Affected: dac5e6249159ac255dad9781793dbe5908ac9ddb , < 7b2c3eabc4dafc062a25e10711154f2107526a78 (git)
Affected: 19f553a1ddf260da6570ed8f8d91a8c87f49b63a (git)
Affected: 7c9db92d5f0eadca30884af75c53d601edc512ee (git)
Affected: 5.10.238 , < 5.10.261 (semver)
Affected: 5.15.185 , < 5.15.212 (semver)
Affected: 6.1.141 , < 6.1.178 (semver)
Affected: 6.6.93 , < 6.6.145 (semver)
Affected: 6.12.31 , < 6.12.97 (semver)
Affected: 5.4.294 , < 5.5 (semver)
Affected: 6.14.9 , < 6.15 (semver)
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Linux Linux Affected: 6.15
Unaffected: 0 , < 6.15 (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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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncan: bcm: add missing rcu list annotations and operations\n\nsashiko-bot remarked the missing use of list_add_rcu() in\nbcm_[rx|tx]_setup() to have a proper initialized bcm_op structure\nwhen bcm_proc_show() traverses the bcm_op\u0027s under rcu_read_lock().\n\nTo cover all initial settings of the bcm_op\u0027s the list_add_rcu() calls\nare moved to the end of the setup code.\n\nWhile at it, also fix the mirroring removal side: bcm_release() called\nbcm_remove_op() - which frees the op via call_rcu() - on ops that were\nstill linked in bo-\u003etx_ops/bo-\u003erx_ops, without list_del_rcu() first.\nUnlink each op with list_del_rcu() before handing it to bcm_remove_op(),\nmatching the existing pattern in bcm_delete_tx_op()/bcm_delete_rx_op()."
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        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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        {
          "url": "https://git.kernel.org/stable/c/7b2c3eabc4dafc062a25e10711154f2107526a78"
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      "title": "can: bcm: add missing rcu list annotations and operations",
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    "cveId": "CVE-2026-72120",
    "datePublished": "2026-08-15T05:52:59.226Z",
    "dateReserved": "2026-08-09T03:40:39.907Z",
    "dateUpdated": "2026-08-17T05:40:33.370Z",
    "state": "PUBLISHED"
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      "cve": "CVE-2026-72120",
      "date": "2026-09-04",
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    "nvd": "{\"cve\":{\"id\":\"CVE-2026-72120\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2026-08-15T06:21:26.507\",\"lastModified\":\"2026-08-17T06:18:11.367\",\"vulnStatus\":\"Received\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\ncan: bcm: add missing rcu list annotations and operations\\n\\nsashiko-bot remarked the missing use of list_add_rcu() in\\nbcm_[rx|tx]_setup() to have a proper initialized bcm_op structure\\nwhen bcm_proc_show() traverses the bcm_op\u0027s under rcu_read_lock().\\n\\nTo cover all initial settings of the bcm_op\u0027s the list_add_rcu() calls\\nare moved to the end of the setup code.\\n\\nWhile at it, also fix the mirroring removal side: bcm_release() called\\nbcm_remove_op() - which frees the op via call_rcu() - on ops that were\\nstill linked in bo-\u003etx_ops/bo-\u003erx_ops, without list_del_rcu() first.\\nUnlink each op with list_del_rcu() before handing it to bcm_remove_op(),\\nmatching the existing pattern in bcm_delete_tx_op()/bcm_delete_rx_op().\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"net/can/bcm.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"659701c0b954ccdb4a916a4ad59bbc16e726d42c\",\"lessThan\":\"8357255e56dc1aaa437e3c53ee9385de984e0d57\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"0622846db728a5332b917c797c733e202c4620ae\",\"lessThan\":\"8e1c7257c81577130f5ce90f69b2a2c3ce63f957\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"6d7d458c41b98a5c1670cbd36f2923c37de51cf5\",\"lessThan\":\"eb1c26eab4d1f0b4450439b4b88c3e73faf1da98\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"1f912f8484e9c4396378c39460bbea0af681f319\",\"lessThan\":\"f53bdab85e64eb57d6899a30d1307fd5a3639cc7\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"63567ecd99a24495208dc860d50fb17440043006\",\"lessThan\":\"4e22e8b505f877573bbdfdbcb680babad9b2f7a1\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"dac5e6249159ac255dad9781793dbe5908ac9ddb\",\"lessThan\":\"b06a4a397ac826603f39875cb7c7819a41365196\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"dac5e6249159ac255dad9781793dbe5908ac9ddb\",\"lessThan\":\"30f7bb922cb7e7f072a56c7cb7a5efccd2ceca1d\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"dac5e6249159ac255dad9781793dbe5908ac9ddb\",\"lessThan\":\"7b2c3eabc4dafc062a25e10711154f2107526a78\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"19f553a1ddf260da6570ed8f8d91a8c87f49b63a\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"7c9db92d5f0eadca30884af75c53d601edc512ee\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"5.10.238\",\"lessThan\":\"5.10.261\",\"versionType\":\"semver\",\"status\":\"affected\"},{\"version\":\"5.15.185\",\"lessThan\":\"5.15.212\",\"versionType\":\"semver\",\"status\":\"affected\"},{\"version\":\"6.1.141\",\"lessThan\":\"6.1.178\",\"versionType\":\"semver\",\"status\":\"affected\"},{\"version\":\"6.6.93\",\"lessThan\":\"6.6.145\",\"versionType\":\"semver\",\"status\":\"affected\"},{\"version\":\"6.12.31\",\"lessThan\":\"6.12.97\",\"versionType\":\"semver\",\"status\":\"affected\"},{\"version\":\"5.4.294\",\"lessThan\":\"5.5\",\"versionType\":\"semver\",\"status\":\"affected\"},{\"version\":\"6.14.9\",\"lessThan\":\"6.15\",\"versionType\":\"semver\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"net/can/bcm.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"6.15\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"6.15\",\"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\":{\"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/30f7bb922cb7e7f072a56c7cb7a5efccd2ceca1d\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/4e22e8b505f877573bbdfdbcb680babad9b2f7a1\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/7b2c3eabc4dafc062a25e10711154f2107526a78\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/8357255e56dc1aaa437e3c53ee9385de984e0d57\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/8e1c7257c81577130f5ce90f69b2a2c3ce63f957\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/b06a4a397ac826603f39875cb7c7819a41365196\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/eb1c26eab4d1f0b4450439b4b88c3e73faf1da98\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/f53bdab85e64eb57d6899a30d1307fd5a3639cc7\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}",
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-08-17T22:51:08+00:00",
      "cve": "CVE-2026-72120",
      "id": "CVE-2026-72120",
      "initial_release_date": "2026-08-15T00:00:00+00:00",
      "product_status:known_affected": "14",
      "product_status:known_not_affected": "260",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: can: bcm: add missing rcu list annotations and operations",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-72120.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

Author Source Type Date Other

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.