{"id":"CVE-2026-97435","state":"PUBLISHED","title":"net: dsa: sja1105: flower: reject cross-chip redirect","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: dsa: sja1105: flower: reject cross-chip redirect\n\ndsa_port_from_netdev() may return a valid port from a different switch\nchip. Programming another chip's port index into the local hardware\ncauses redirection to the wrong port, or an out-of-bounds access if the\nindex exceeds the local chip's port count.\n\nApply a minimal fix that adds a check to catch this case and adjusts the\nextack message. When cls->common.skip_sw is not set, the operation could\ninstead redirect to the upstream port and let the software or upstream\nswitch(es) handle the forward, but that is not addressed here.","publishedAt":"2026-09-24T16:03:48.116Z","updatedAt":"2026-10-03T10:58:19.848Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"dfacc5a23e227cabdff41b6202f510398e90d36b","status":"affected","lessThan":"6bf5158af52a5293e9160d8f2992c629ca14aa7d","versionType":"git"},{"version":"dfacc5a23e227cabdff41b6202f510398e90d36b","status":"affected","lessThan":"277f8611e017d3ff1ab06af58a6c538b55da1cc8","versionType":"git"},{"version":"dfacc5a23e227cabdff41b6202f510398e90d36b","status":"affected","lessThan":"eb177aa00c392de3dc530c34f173a962216f82dd","versionType":"git"},{"version":"dfacc5a23e227cabdff41b6202f510398e90d36b","status":"affected","lessThan":"d0e54098c072b6064cdcf8039075ada8b88583da","versionType":"git"},{"version":"dfacc5a23e227cabdff41b6202f510398e90d36b","status":"affected","lessThan":"c999cc39775381b68ed66eae57c1425452672c0f","versionType":"git"},{"version":"dfacc5a23e227cabdff41b6202f510398e90d36b","status":"affected","lessThan":"abd7511e12b231798332afa04ed9bee9e84f9445","versionType":"git"},{"version":"dfacc5a23e227cabdff41b6202f510398e90d36b","status":"affected","lessThan":"cfa5274a5dc2a23b957da5dc806d2ac0c7a66af0","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/dsa/sja1105/sja1105_flower.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.8","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.8","versionType":"semver"},{"version":"5.10.271","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.222","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.189","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.158","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.111","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.53","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.2","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/dsa/sja1105/sja1105_flower.c"]}],"references":["https://git.kernel.org/stable/c/6bf5158af52a5293e9160d8f2992c629ca14aa7d","https://git.kernel.org/stable/c/277f8611e017d3ff1ab06af58a6c538b55da1cc8","https://git.kernel.org/stable/c/eb177aa00c392de3dc530c34f173a962216f82dd","https://git.kernel.org/stable/c/d0e54098c072b6064cdcf8039075ada8b88583da","https://git.kernel.org/stable/c/c999cc39775381b68ed66eae57c1425452672c0f","https://git.kernel.org/stable/c/abd7511e12b231798332afa04ed9bee9e84f9445","https://git.kernel.org/stable/c/cfa5274a5dc2a23b957da5dc806d2ac0c7a66af0"],"weaknesses":[],"ingestedAt":"2026-10-29T20:13:43.249Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/97xxx/CVE-2026-97435.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-97435","state":"PUBLISHED","datePublished":"2026-09-24T16:03:48.116Z","dateUpdated":"2026-10-03T10:58:19.848Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-09-24T14:53:16.869Z"},"containers":{"cna":{"title":"net: dsa: sja1105: flower: reject cross-chip redirect","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: dsa: sja1105: flower: reject cross-chip redirect\n\ndsa_port_from_netdev() may return a valid port from a different switch\nchip. Programming another chip's port index into the local hardware\ncauses redirection to the wrong port, or an out-of-bounds access if the\nindex exceeds the local chip's port count.\n\nApply a minimal fix that adds a check to catch this case and adjusts the\nextack message. When cls->common.skip_sw is not set, the operation could\ninstead redirect to the upstream port and let the software or upstream\nswitch(es) handle the forward, but that is not addressed here."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"dfacc5a23e227cabdff41b6202f510398e90d36b","status":"affected","lessThan":"6bf5158af52a5293e9160d8f2992c629ca14aa7d","versionType":"git"},{"version":"dfacc5a23e227cabdff41b6202f510398e90d36b","status":"affected","lessThan":"277f8611e017d3ff1ab06af58a6c538b55da1cc8","versionType":"git"},{"version":"dfacc5a23e227cabdff41b6202f510398e90d36b","status":"affected","lessThan":"eb177aa00c392de3dc530c34f173a962216f82dd","versionType":"git"},{"version":"dfacc5a23e227cabdff41b6202f510398e90d36b","status":"affected","lessThan":"d0e54098c072b6064cdcf8039075ada8b88583da","versionType":"git"},{"version":"dfacc5a23e227cabdff41b6202f510398e90d36b","status":"affected","lessThan":"c999cc39775381b68ed66eae57c1425452672c0f","versionType":"git"},{"version":"dfacc5a23e227cabdff41b6202f510398e90d36b","status":"affected","lessThan":"abd7511e12b231798332afa04ed9bee9e84f9445","versionType":"git"},{"version":"dfacc5a23e227cabdff41b6202f510398e90d36b","status":"affected","lessThan":"cfa5274a5dc2a23b957da5dc806d2ac0c7a66af0","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/dsa/sja1105/sja1105_flower.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.8","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.8","versionType":"semver"},{"version":"5.10.271","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.222","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.189","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.158","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.111","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.53","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.2","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/dsa/sja1105/sja1105_flower.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/6bf5158af52a5293e9160d8f2992c629ca14aa7d"},{"url":"https://git.kernel.org/stable/c/277f8611e017d3ff1ab06af58a6c538b55da1cc8"},{"url":"https://git.kernel.org/stable/c/eb177aa00c392de3dc530c34f173a962216f82dd"},{"url":"https://git.kernel.org/stable/c/d0e54098c072b6064cdcf8039075ada8b88583da"},{"url":"https://git.kernel.org/stable/c/c999cc39775381b68ed66eae57c1425452672c0f"},{"url":"https://git.kernel.org/stable/c/abd7511e12b231798332afa04ed9bee9e84f9445"},{"url":"https://git.kernel.org/stable/c/cfa5274a5dc2a23b957da5dc806d2ac0c7a66af0"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-10-03T10:58:19.848Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.8","versionEndExcluding":"5.10.271"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.8","versionEndExcluding":"5.15.222"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.8","versionEndExcluding":"6.1.189"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.8","versionEndExcluding":"6.6.158"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.8","versionEndExcluding":"6.12.111"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.8","versionEndExcluding":"6.18.53"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.8","versionEndExcluding":"7.2"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}