CVE-2021-47160
Vulnerability from cvelistv5
Published
2024-03-25 09:16
Modified
2024-11-04 12:00
Severity ?
Summary
net: dsa: mt7530: fix VLAN traffic leaks
Impacted products
LinuxLinux
LinuxLinux
Show details on NVD website


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                "timestamp": "2024-03-25T13:55:35.659497Z",
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        "title": "CVE Program Container"
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    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/dsa/mt7530.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
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      "descriptions": [
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          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: dsa: mt7530: fix VLAN traffic leaks\n\nPCR_MATRIX field was set to all 1\u0027s when VLAN filtering is enabled, but\nwas not reset when it is disabled, which may cause traffic leaks:\n\n\tip link add br0 type bridge vlan_filtering 1\n\tip link add br1 type bridge vlan_filtering 1\n\tip link set swp0 master br0\n\tip link set swp1 master br1\n\tip link set br0 type bridge vlan_filtering 0\n\tip link set br1 type bridge vlan_filtering 0\n\t# traffic in br0 and br1 will start leaking to each other\n\nAs port_bridge_{add,del} have set up PCR_MATRIX properly, remove the\nPCR_MATRIX write from mt7530_port_set_vlan_aware."
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      "title": "net: dsa: mt7530: fix VLAN traffic leaks",
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    "assignerShortName": "Linux",
    "cveId": "CVE-2021-47160",
    "datePublished": "2024-03-25T09:16:14.468Z",
    "dateReserved": "2024-03-25T09:12:14.109Z",
    "dateUpdated": "2024-11-04T12:00:34.579Z",
    "state": "PUBLISHED"
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    "nvd": "{\"cve\":{\"id\":\"CVE-2021-47160\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-03-25T10:15:08.377\",\"lastModified\":\"2024-03-25T13:47:14.087\",\"vulnStatus\":\"Awaiting Analysis\",\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nnet: dsa: mt7530: fix VLAN traffic leaks\\n\\nPCR_MATRIX field was set to all 1\u0027s when VLAN filtering is enabled, but\\nwas not reset when it is disabled, which may cause traffic leaks:\\n\\n\\tip link add br0 type bridge vlan_filtering 1\\n\\tip link add br1 type bridge vlan_filtering 1\\n\\tip link set swp0 master br0\\n\\tip link set swp1 master br1\\n\\tip link set br0 type bridge vlan_filtering 0\\n\\tip link set br1 type bridge vlan_filtering 0\\n\\t# traffic in br0 and br1 will start leaking to each other\\n\\nAs port_bridge_{add,del} have set up PCR_MATRIX properly, remove the\\nPCR_MATRIX write from mt7530_port_set_vlan_aware.\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se resolvi\u00f3 la siguiente vulnerabilidad: net: dsa: mt7530: corregir fugas de tr\u00e1fico de VLAN El campo PCR_MATRIX se configur\u00f3 en todos 1 cuando el filtrado de VLAN est\u00e1 habilitado, pero no se restableci\u00f3 cuando est\u00e1 deshabilitado, lo que puede causar fugas de tr\u00e1fico: enlace ip agregar puente tipo br0 vlan_filtering 1 enlace ip agregar puente tipo br1 vlan_filtering 1 conjunto de enlaces ip swp0 master br0 conjunto de enlaces ip swp1 maestro br1 conjunto de enlaces ip br0 puente tipo vlan_filtering 0 conjunto de enlaces ip br1 tipo puente vlan_filtering 0 # tr\u00e1fico en br0 y br1 comenzar\u00e1n a filtrarse entre s\u00ed. Como port_bridge_{add,del} ha configurado PCR_MATRIX correctamente, elimine la escritura PCR_MATRIX de mt7530_port_set_vlan_aware.\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/474a2ddaa192777522a7499784f1d60691cd831a\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/4fe4e1f48ba119bdbc7c897c83b04ba0d08f5488\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/82ae35b6c14feae5f216913d5b433e143c756d4e\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/ae389812733b1b1e8e07fcc238e41db166b5c78d\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/b91117b66fe875723a4e79ec6263526fffdb44d2\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
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