CVE-2024-26723

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The issue can be reproduced like this:\nip link add name bond0 type bond miimon 100 mode balance-xor\nip link set dev eth0 master bond0\n\nThe reason is because when adding a interface under the lag it would go\nthrough all the ports and try to figure out which other ports are under\nthat lag interface. And the issue is that lan966x can have ports that are\nNULL pointer as they are not probed. So then iterating over these ports\nit would just crash as they are NULL pointers.\nThe fix consists in actually checking for NULL pointers before accessing\nsomething from the ports. Like we do in other places."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/net/ethernet/microchip/lan966x/lan966x_lag.c"], "versions": [{"version": "cabc9d49333df72fe0f6d58bdcf9057ba341e701", "lessThan": "b9357489c46c7a43999964628db8b47d3a1f8672", "status": "affected", "versionType": "git"}, {"version": "cabc9d49333df72fe0f6d58bdcf9057ba341e701", "lessThan": "48fae67d837488c87379f0c9f27df7391718477c", "status": "affected", "versionType": "git"}, {"version": "cabc9d49333df72fe0f6d58bdcf9057ba341e701", "lessThan": "2a492f01228b7d091dfe38974ef40dccf8f9f2f1", "status": "affected", "versionType": "git"}, {"version": "cabc9d49333df72fe0f6d58bdcf9057ba341e701", "lessThan": "15faa1f67ab405d47789d4702f587ec7df7ef03e", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": 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The issue can be reproduced like this:\nip link add name bond0 type bond miimon 100 mode balance-xor\nip link set dev eth0 master bond0\n\nThe reason is because when adding a interface under the lag it would go\nthrough all the ports and try to figure out which other ports are under\nthat lag interface. And the issue is that lan966x can have ports that are\nNULL pointer as they are not probed. So then iterating over these ports\nit would just crash as they are NULL pointers.\nThe fix consists in actually checking for NULL pointers before accessing\nsomething from the ports. Like we do in other places."}, {"lang": "es", "value": "En el kernel de Linux, se resolvi\u00f3 la siguiente vulnerabilidad: lan966x: se solucion\u00f3 el bloqueo al agregar una interfaz con un retraso. Se produce un bloqueo al agregar una de las interfaces lan966x con un retraso. El problema se puede reproducir as\u00ed: enlace ip agregar nombre bond0 tipo bond miimon modo 100 balance-xor enlace ip establecer dev eth0 master bond0 La raz\u00f3n es que al agregar una interfaz bajo el retraso pasar\u00eda por todos los puertos e intentar\u00eda calcular determine qu\u00e9 otros puertos est\u00e1n bajo esa interfaz de retraso. Y el problema es que lan966x puede tener puertos que sean punteros NULL ya que no est\u00e1n sondeados. Entonces, al iterar sobre estos puertos, simplemente fallar\u00eda porque son punteros NULL. La soluci\u00f3n consiste en comprobar si hay punteros NULL antes de acceder a algo desde los puertos. Como hacemos en otros lugares."}], "id": "CVE-2024-26723", "lastModified": "2026-06-17T07:18:10.763", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 5.9, "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2024-26723", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2024-07-16T14:40:24.360692Z", "version": "2.0.3"}}]}, "published": "2024-04-03T15:15:54.143", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/15faa1f67ab405d47789d4702f587ec7df7ef03e"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/2a492f01228b7d091dfe38974ef40dccf8f9f2f1"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/48fae67d837488c87379f0c9f27df7391718477c"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/b9357489c46c7a43999964628db8b47d3a1f8672"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/15faa1f67ab405d47789d4702f587ec7df7ef03e"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/2a492f01228b7d091dfe38974ef40dccf8f9f2f1"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/48fae67d837488c87379f0c9f27df7391718477c"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/b9357489c46c7a43999964628db8b47d3a1f8672"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-400"}], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}

{"bugzilla": {"description": "kernel: lan966x: Fix crash when adding interface under a lag", "id": "2273135", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2273135"}, "csaw": false, "cvss3": {"cvss3_base_score": "4.4", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-476", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nlan966x: Fix crash when adding interface under a lag\nThere is a crash when adding one of the lan966x interfaces under a lag\ninterface. The issue can be reproduced like this:\nip link add name bond0 type bond miimon 100 mode balance-xor\nip link set dev eth0 master bond0\nThe reason is because when adding a interface under the lag it would go\nthrough all the ports and try to figure out which other ports are under\nthat lag interface. And the issue is that lan966x can have ports that are\nNULL pointer as they are not probed. So then iterating over these ports\nit would just crash as they are NULL pointers.\nThe fix consists in actually checking for NULL pointers before accessing\nsomething from the ports. Like we do in other places."], "name": "CVE-2024-26723", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2024-04-03T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2024-26723\nhttps://nvd.nist.gov/vuln/detail/CVE-2024-26723\nhttps://lore.kernel.org/linux-cve-announce/2024040345-CVE-2024-26723-49ee@gregkh/T"], "threat_severity": "Low"}

{}