{"dataType":"CVE_RECORD","dataVersion":"5.1","cveMetadata":{"cveId":"CVE-2021-47160","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2024-03-25T09:12:14.109Z","datePublished":"2024-03-25T09:16:14.468Z","dateUpdated":"2025-05-04T07:05:19.037Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2025-05-04T07:05:19.037Z"},"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's 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."}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/dsa/mt7530.c"],"versions":[{"version":"83163f7dca5684816d01c8ccf4857aa74801e7b7","lessThan":"ae389812733b1b1e8e07fcc238e41db166b5c78d","status":"affected","versionType":"git"},{"version":"83163f7dca5684816d01c8ccf4857aa74801e7b7","lessThan":"4fe4e1f48ba119bdbc7c897c83b04ba0d08f5488","status":"affected","versionType":"git"},{"version":"83163f7dca5684816d01c8ccf4857aa74801e7b7","lessThan":"b91117b66fe875723a4e79ec6263526fffdb44d2","status":"affected","versionType":"git"},{"version":"83163f7dca5684816d01c8ccf4857aa74801e7b7","lessThan":"82ae35b6c14feae5f216913d5b433e143c756d4e","status":"affected","versionType":"git"},{"version":"83163f7dca5684816d01c8ccf4857aa74801e7b7","lessThan":"474a2ddaa192777522a7499784f1d60691cd831a","status":"affected","versionType":"git"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"affected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/dsa/mt7530.c"],"versions":[{"version":"4.16","status":"affected"},{"version":"0","lessThan":"4.16","status":"unaffected","versionType":"semver"},{"version":"4.19.193","lessThanOrEqual":"4.19.*","status":"unaffected","versionType":"semver"},{"version":"5.4.124","lessThanOrEqual":"5.4.*","status":"unaffected","versionType":"semver"},{"version":"5.10.42","lessThanOrEqual":"5.10.*","status":"unaffected","versionType":"semver"},{"version":"5.12.9","lessThanOrEqual":"5.12.*","status":"unaffected","versionType":"semver"},{"version":"5.13","lessThanOrEqual":"*","status":"unaffected","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.16","versionEndExcluding":"4.19.193"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.16","versionEndExcluding":"5.4.124"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.16","versionEndExcluding":"5.10.42"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.16","versionEndExcluding":"5.12.9"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.16","versionEndExcluding":"5.13"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/ae389812733b1b1e8e07fcc238e41db166b5c78d"},{"url":"https://git.kernel.org/stable/c/4fe4e1f48ba119bdbc7c897c83b04ba0d08f5488"},{"url":"https://git.kernel.org/stable/c/b91117b66fe875723a4e79ec6263526fffdb44d2"},{"url":"https://git.kernel.org/stable/c/82ae35b6c14feae5f216913d5b433e143c756d4e"},{"url":"https://git.kernel.org/stable/c/474a2ddaa192777522a7499784f1d60691cd831a"}],"title":"net: dsa: mt7530: fix VLAN traffic leaks","x_generator":{"engine":"bippy-1.2.0"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"id":"CVE-2021-47160","role":"CISA Coordinator","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"version":"2.0.3","timestamp":"2024-03-25T13:55:35.659497Z"}}}],"providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2024-06-04T17:13:48.308Z"}},{"providerMetadata":{"orgId":"af854a3a-2127-422b-91ae-364da2661108","shortName":"CVE","dateUpdated":"2024-08-04T05:24:39.982Z"},"title":"CVE Program Container","references":[{"url":"https://git.kernel.org/stable/c/ae389812733b1b1e8e07fcc238e41db166b5c78d","tags":["x_transferred"]},{"url":"https://git.kernel.org/stable/c/4fe4e1f48ba119bdbc7c897c83b04ba0d08f5488","tags":["x_transferred"]},{"url":"https://git.kernel.org/stable/c/b91117b66fe875723a4e79ec6263526fffdb44d2","tags":["x_transferred"]},{"url":"https://git.kernel.org/stable/c/82ae35b6c14feae5f216913d5b433e143c756d4e","tags":["x_transferred"]},{"url":"https://git.kernel.org/stable/c/474a2ddaa192777522a7499784f1d60691cd831a","tags":["x_transferred"]}]}]}}