{"id":"CVE-2026-23054","state":"PUBLISHED","title":"net: hv_netvsc: reject RSS hash key programming without RX indirection table","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: hv_netvsc: reject RSS hash key programming without RX indirection table\n\nRSS configuration requires a valid RX indirection table. When the device\nreports a single receive queue, rndis_filter_device_add() does not\nallocate an indirection table, accepting RSS hash key updates in this\nstate leads to a hang.\n\nFix this by gating netvsc_set_rxfh() on ndc->rx_table_sz and return\n-EOPNOTSUPP when the table is absent. This aligns set_rxfh with the device\ncapabilities and prevents incorrect behavior.","publishedAt":"2026-02-04T16:04:23.396Z","updatedAt":"2026-10-15T01:12:44.784Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"962f3fee83a4ef9010ae84dc43ae7aecb572e2a9","status":"affected","lessThan":"8288136f508e78eb3563e7073975999cf225a2f9","versionType":"git"},{"version":"962f3fee83a4ef9010ae84dc43ae7aecb572e2a9","status":"affected","lessThan":"82c9039c8ebb715753a40434df714f865a3aec9c","versionType":"git"},{"version":"962f3fee83a4ef9010ae84dc43ae7aecb572e2a9","status":"affected","lessThan":"4cd55c609e85ae2313248ef1a33619a3eef44a16","versionType":"git"},{"version":"962f3fee83a4ef9010ae84dc43ae7aecb572e2a9","status":"affected","lessThan":"11dd9a9ef4dc4507a15a69b8511a0013c6c28fa3","versionType":"git"},{"version":"962f3fee83a4ef9010ae84dc43ae7aecb572e2a9","status":"affected","lessThan":"d23564955811da493f34412d7de60fa268c8cb50","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/hyperv/netvsc_drv.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"4.11","status":"affected"},{"version":"0","status":"unaffected","lessThan":"4.11","versionType":"semver"},{"version":"6.1.162","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.122","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.67","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.7","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"6.19","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/hyperv/netvsc_drv.c"]}],"references":["https://git.kernel.org/stable/c/8288136f508e78eb3563e7073975999cf225a2f9","https://git.kernel.org/stable/c/82c9039c8ebb715753a40434df714f865a3aec9c","https://git.kernel.org/stable/c/4cd55c609e85ae2313248ef1a33619a3eef44a16","https://git.kernel.org/stable/c/11dd9a9ef4dc4507a15a69b8511a0013c6c28fa3","https://git.kernel.org/stable/c/d23564955811da493f34412d7de60fa268c8cb50","https://cert-portal.siemens.com/productcert/html/ssa-019113.html","https://cert-portal.siemens.com/productcert/html/ssa-457936.html"],"weaknesses":[],"ingestedAt":"2026-10-29T20:11:21.040Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/23xxx/CVE-2026-23054.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-23054","state":"PUBLISHED","datePublished":"2026-02-04T16:04:23.396Z","dateUpdated":"2026-10-15T01:12:44.784Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-01-13T15:37:45.951Z"},"containers":{"cna":{"title":"net: hv_netvsc: reject RSS hash key programming without RX indirection table","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: hv_netvsc: reject RSS hash key programming without RX indirection table\n\nRSS configuration requires a valid RX indirection table. When the device\nreports a single receive queue, rndis_filter_device_add() does not\nallocate an indirection table, accepting RSS hash key updates in this\nstate leads to a hang.\n\nFix this by gating netvsc_set_rxfh() on ndc->rx_table_sz and return\n-EOPNOTSUPP when the table is absent. This aligns set_rxfh with the device\ncapabilities and prevents incorrect 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