CVE-2026-72120

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().

CVSS v3 7.8 HIGH

7.8^/10

CVSS v3 : HIGH

Vector :

Exploitability : 1.8 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://git.kernel.org/stable/c/30f7bb922cb7e7f072a56c7cb7a5efccd2ceca1d
https://git.kernel.org/stable/c/4e22e8b505f877573bbdfdbcb680babad9b2f7a1
https://git.kernel.org/stable/c/7b2c3eabc4dafc062a25e10711154f2107526a78
https://git.kernel.org/stable/c/8357255e56dc1aaa437e3c53ee9385de984e0d57
https://git.kernel.org/stable/c/8e1c7257c81577130f5ce90f69b2a2c3ce63f957
https://git.kernel.org/stable/c/b06a4a397ac826603f39875cb7c7819a41365196
https://git.kernel.org/stable/c/eb1c26eab4d1f0b4450439b4b88c3e73faf1da98
https://git.kernel.org/stable/c/f53bdab85e64eb57d6899a30d1307fd5a3639cc7

Configurations

No configuration.

History

No history.

Information

Published : 2026-08-15 06:21

Updated : 2026-08-17 06:18

NVD link : CVE-2026-72120

Mitre link : CVE-2026-72120

CVE.ORG link : CVE-2026-72120

JSON object : View

Products Affected

No product.

CWE

No CWE.

{"id": "CVE-2026-72120", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Secondary", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.8, "attackVector": "LOCAL", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 1.8}]}, "affected": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "affectedData": [{"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "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"}], "programFiles": ["net/can/bcm.c"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "6.15"}, {"status": "unaffected", "version": "0", "lessThan": "6.15", "versionType": "semver"}, {"status": "unaffected", "version": "5.10.261", "versionType": "semver", "lessThanOrEqual": "5.10.*"}, {"status": "unaffected", "version": "5.15.212", "versionType": "semver", "lessThanOrEqual": "5.15.*"}, {"status": "unaffected", "version": "6.1.178", "versionType": "semver", "lessThanOrEqual": "6.1.*"}, {"status": "unaffected", "version": "6.6.145", "versionType": "semver", "lessThanOrEqual": "6.6.*"}, {"status": "unaffected", "version": "6.12.97", "versionType": "semver", "lessThanOrEqual": "6.12.*"}, {"status": "unaffected", "version": "6.18.40", "versionType": "semver", "lessThanOrEqual": "6.18.*"}, {"status": "unaffected", "version": "7.1.5", "versionType": "semver", "lessThanOrEqual": "7.1.*"}, {"status": "unaffected", "version": "7.2", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}], "programFiles": ["net/can/bcm.c"], "defaultStatus": "affected"}]}], "published": "2026-08-15T06:21:26.507", "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"}], "vulnStatus": "Received", "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's under rcu_read_lock().\n\nTo cover all initial settings of the bcm_op's 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->tx_ops/bo->rx_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()."}], "lastModified": "2026-08-17T06:18:11.367", "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}