{"id":"CVE-2026-97603","revision":null,"records":[{"revision":"3775d7f6cfb84eca814f20a790af96a8","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-97603","aliases":[],"title":"idpf: disable DIM work before freeing q_vectors","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nidpf: disable DIM work before freeing q_vectors\n\nidpf never drains the Tx/Rx DIM works before freeing the memory they\nlive in.  tx_dim and rx_dim are embedded in struct idpf_q_vector, they\nare queued from the NAPI poll via net_dim(), and idpf_vport_intr_rel()\nends with kfree(rsrc->q_vectors).  Nothing in the driver cancels them.\n\nidpf_tx_dim_work() and idpf_rx_dim_work() then run on freed memory:\nidpf_vport_intr_write_itr() writes the ITR register through\nq_vector->intr_reg.tx_itr / rx_itr, void __iomem pointers loaded out of\nthe freed q_vector.  No configuration is needed to get there --\nIDPF_ITR_IS_DYNAMIC() is defined as (itr_mode) and idpf_vport_alloc()\ninitialises both modes to IDPF_ITR_DYNAMIC.\n\nDraining after idpf_vport_intr_napi_dis_all() is not enough on its own.\nidpf_net_dim() is called from inside the\n\"if (napi_complete_done(napi, work_done))\" branch of the poll, and\nnapi_complete_done() has already cleared NAPIF_STATE_SCHED by then.\nnapi_disable_locked() waits only while (val & (NAPIF_STATE_SCHED |\nNAPIF_STATE_NPSVC)), so napi_disable() can return while the poll tail is\nstill queueing the work, and a plain cancel_work_sync() would be\nre-armed behind the drain.\n\nUse disable_work_sync(): schedule_work() on a work with a non-zero\ndisable count is dropped by clear_pending_if_disabled() before\n__queue_work() is reached.\n\nMove idpf_init_dim() to idpf_vport_intr_alloc() so the works are\ninitialised on every path that can reach the drain -- the three\n\"goto intr_deinit\" sites between idpf_vport_intr_init() and\nidpf_vport_intr_ena() get there without the enable side having run.\nNothing re-enables them: rsrc->q_vectors is freed on every exit from\nidpf_vport_open() and on every idpf_vport_stop(), so the count dies with\nthe object.\n\nIt is a race, not a deterministic failure -- net_dim() only schedules\nonce DIM_NEVENTS events have accumulated and the profile index changes.\nA KASAN ifup/ifdown loop under load is the way to see it.","state":0,"publishedAt":"2026-09-25T10:22:16.015+00:00","modifiedAt":"2026-10-19T09:10:07.248+00:00","affected":[{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"drivers/net/ethernet/intel/idpf/idpf_txrx.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"c2d548cad1508d334517bcbd7cd5c915cc831fc0\",\n                            \"lessThan\": \"7d64d4c6bb6bb63b6cdb7de133c3ec48333b27b5\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"c2d548cad1508d334517bcbd7cd5c915cc831fc0\",\n                            \"lessThan\": \"7e4312953788244d47074987d40d76702cf929f1\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"c2d548cad1508d334517bcbd7cd5c915cc831fc0\",\n                            \"lessThan\": \"cd7a1598645b6917a8676b7e2efe8d97ce68a952\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"c2d548cad1508d334517bcbd7cd5c915cc831fc0\",\n                            \"lessThan\": \"7dd4c829bac2916be98a3e34b41daaba7f42b4c4\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"affected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"drivers/net/ethernet/intel/idpf/idpf_txrx.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"6.7\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"6.7\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.12.112\",\n                            \"lessThanOrEqual\": \"6.12.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18.53\",\n                            \"lessThanOrEqual\": \"6.18.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.2.7\",\n                            \"lessThanOrEqual\": \"7.2.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.3\",\n                            \"lessThanOrEqual\": \"*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"original_commit_for_fix\"\n                        }\n                    ]\n                }"}],"metrics":[],"references":["https://git.kernel.org/stable/c/7d64d4c6bb6bb63b6cdb7de133c3ec48333b27b5","https://git.kernel.org/stable/c/7e4312953788244d47074987d40d76702cf929f1","https://git.kernel.org/stable/c/cd7a1598645b6917a8676b7e2efe8d97ce68a952","https://git.kernel.org/stable/c/7dd4c829bac2916be98a3e34b41daaba7f42b4c4"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-97603","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-97603","identifiers":["CVE-2026-97603"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. Missing entries do not establish absence of exploitation.","generation":"2026-11-09T01:02:10.7447709+00:00","complete":true,"records":1769,"lastAttemptAt":"2026-11-09T01:02:10.7447709+00:00","lastSuccessAt":"2026-11-09T01:02:10.8951096+00:00","error":null,"lastVerifiedAt":"2026-11-09T01:02:10.8951131+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"cve-program","scope":"Official CVE Program baseline and cumulative hourly delta; all vendors, published and rejected records","generation":"cve-eaa64dac63caa79c8d4905619258c41c51b39e461b996124e1a21b5e85e7e738-06f887e3cff12cdbfc1e6b879a816e143efd9863ce6bea9ec9f7392bb9208c22","complete":true,"records":421267,"lastAttemptAt":"2026-11-09T01:02:10.4183693+00:00","lastSuccessAt":"2026-11-09T00:02:15.5944139+00:00","error":"InvalidOperationException","lastVerifiedAt":"2026-11-09T00:02:15.6996628+00:00","snapshotPublishedAt":"2026-11-08T23:22:42+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"euvd","scope":"Rolling EUVD lookups of CVE aliases in current public OSV archives; 500 identifiers per refresh, rechecked after 48 hours. Not a global EUVD catalog. Successful not-found lookups count as checked; they do not imply withdrawal or safety. No reader inventory is sent.","generation":"enrichment-ad1daa57fd0d4d4ba18256a2340415a0","complete":false,"records":13654,"lastAttemptAt":"2026-11-09T01:13:59.0733242+00:00","lastSuccessAt":"2026-11-09T01:13:59.069+00:00","error":null,"lastVerifiedAt":"2026-11-09T01:13:59.069+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":13626,"expectedIdentifiers":13706,"failedIdentifiers":0},{"source":"first-epss:nuget","scope":"FIRST EPSS for explicit CVE aliases in the collected public NuGet archive. Not a global EPSS backfill.","generation":"2026-11-09T01:02:10.7447709+00:00","complete":true,"records":1096,"lastAttemptAt":"2026-11-09T01:02:10.7447709+00:00","lastSuccessAt":"2026-11-09T01:02:10.8958676+00:00","error":null,"lastVerifiedAt":"2026-11-09T01:02:10.8958678+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"nvd","scope":"Rolling NVD lookups of CVE aliases in current public OSV archives; 500 identifiers per refresh, rechecked after 48 hours. Not a global NVD catalog. Successful not-found lookups count as checked; they do not imply withdrawal or safety. No reader inventory is sent.","generation":"enrichment-cfd5ade15e524f2aab9bbdd1588fc1b0","complete":true,"records":13666,"lastAttemptAt":"2026-11-09T01:02:13.0307833+00:00","lastSuccessAt":"2026-11-09T01:02:13.027+00:00","error":null,"lastVerifiedAt":"2026-11-09T01:02:13.027+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":13706,"expectedIdentifiers":13706,"failedIdentifiers":0},{"source":"osv:Go","scope":"Complete OSV Go ecosystem archive, including withdrawn and malicious-package source records; statement counts are not unique CVE counts","generation":"go-980593e6977a6d1b4fb1eed5a1ffe88a468736f89f0a06f710924ad59132c023","complete":true,"records":9914,"lastAttemptAt":"2026-11-09T01:02:10.6696355+00:00","lastSuccessAt":"2026-11-08T11:07:07.068788+00:00","error":null,"lastVerifiedAt":"2026-11-09T01:02:10.6696355+00:00","snapshotPublishedAt":"2026-11-08T11:02:46+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"osv:NuGet","scope":"Complete OSV NuGet ecosystem archive, including GitHub Advisory Database records; NuGet version matching only","generation":"nuget-fde804134ecdda0ddd5ff5c26ee1fff5a6fa659311f7ef2e51c6ad54964db0e2","complete":true,"records":1971,"lastAttemptAt":"2026-11-09T01:02:10.4684348+00:00","lastSuccessAt":"2026-11-06T19:03:17.0399903+00:00","error":null,"lastVerifiedAt":"2026-11-09T01:02:10.4684348+00:00","snapshotPublishedAt":"2026-11-06T18:17:57+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"osv:crates.io","scope":"Complete OSV crates.io ecosystem archive, including withdrawn and malicious-package source records; statement counts are not unique CVE counts","generation":"crates.io-3b1150af6d7ada2c07356cbab4ead5224c1485027890f71c71d0742cddf0b9e8","complete":true,"records":3055,"lastAttemptAt":"2026-11-09T01:02:10.6816953+00:00","lastSuccessAt":"2026-11-09T00:02:23.4330288+00:00","error":null,"lastVerifiedAt":"2026-11-09T01:02:10.6816953+00:00","snapshotPublishedAt":"2026-11-08T23:17:54+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"osv:npm","scope":"Complete OSV npm ecosystem archive, including withdrawn and malicious-package source records; statement counts are not unique CVE counts","generation":"npm-f8647d7ba64b1ba0dfdc7130944766d5b36d5b77d18fff0c79e651a4cff3c2b9","complete":true,"records":231293,"lastAttemptAt":"2026-11-09T01:02:10.5692363+00:00","lastSuccessAt":"2026-11-08T11:06:56.2918717+00:00","error":null,"lastVerifiedAt":"2026-11-09T01:02:10.5692363+00:00","snapshotPublishedAt":"2026-11-08T11:02:50+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null}]}