{"id":"CVE-2024-46750","revision":null,"records":[{"revision":"81ada95b43cd48309a334350011ec495","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2024-46750","aliases":[],"title":"PCI: Add missing bridge lock to pci_bus_lock()","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nPCI: Add missing bridge lock to pci_bus_lock()\n\nOne of the true positives that the cfg_access_lock lockdep effort\nidentified is this sequence:\n\n WARNING: CPU: 14 PID: 1 at drivers/pci/pci.c:4886 pci_bridge_secondary_bus_reset+0x5d/0x70\n RIP: 0010:pci_bridge_secondary_bus_reset+0x5d/0x70\n Call Trace:\n \n ? __warn+0x8c/0x190\n ? pci_bridge_secondary_bus_reset+0x5d/0x70\n ? report_bug+0x1f8/0x200\n ? handle_bug+0x3c/0x70\n ? exc_invalid_op+0x18/0x70\n ? asm_exc_invalid_op+0x1a/0x20\n ? pci_bridge_secondary_bus_reset+0x5d/0x70\n pci_reset_bus+0x1d8/0x270\n vmd_probe+0x778/0xa10\n pci_device_probe+0x95/0x120\n\nWhere pci_reset_bus() users are triggering unlocked secondary bus resets.\nIronically pci_bus_reset(), several calls down from pci_reset_bus(), uses\npci_bus_lock() before issuing the reset which locks everything *but* the\nbridge itself.\n\nFor the same motivation as adding:\n\n bridge = pci_upstream_bridge(dev);\n if (bridge)\n pci_dev_lock(bridge);\n\nto pci_reset_function() for the \"bus\" and \"cxl_bus\" reset cases, add\npci_dev_lock() for @bus->self to pci_bus_lock().\n\n[bhelgaas: squash in recursive locking deadlock fix from Keith Busch:\nhttps://lore.kernel.org/r/20240711193650.701834-1-kbusch@meta.com]","state":0,"publishedAt":"2024-09-18T07:12:10.484+00:00","modifiedAt":"2026-10-15T00:50:41.606+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/pci/pci.c\"\n ],\n \"versions\": [\n {\n \"version\": \"090a3c5322e900f468b3205b76d0837003ad57b2\",\n \"lessThan\": \"0790b89c7e911003b8c50ae50e3ac7645de1fae9\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"090a3c5322e900f468b3205b76d0837003ad57b2\",\n \"lessThan\": \"df77a678c33871a6e4ac5b54a71662f1d702335b\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"090a3c5322e900f468b3205b76d0837003ad57b2\",\n \"lessThan\": \"e2355d513b89a2cb511b4ded0deb426cdb01acd0\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"090a3c5322e900f468b3205b76d0837003ad57b2\",\n \"lessThan\": \"04e85a3285b0e5c5af6fd2c0fd6e95ffecc01945\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"090a3c5322e900f468b3205b76d0837003ad57b2\",\n \"lessThan\": \"7253b4fed46471cc247c6cacefac890a8472c083\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"090a3c5322e900f468b3205b76d0837003ad57b2\",\n \"lessThan\": \"78c6e39fef5c428960aff742149bba302dd46f5a\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"090a3c5322e900f468b3205b76d0837003ad57b2\",\n \"lessThan\": \"81c68e218ab883dfa368460a59b674084c0240da\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"090a3c5322e900f468b3205b76d0837003ad57b2\",\n \"lessThan\": \"a4e772898f8bf2e7e1cf661a12c60a5612c4afab\",\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/pci/pci.c\"\n ],\n \"versions\": [\n {\n \"version\": \"3.12\",\n \"status\": \"affected\"\n },\n {\n \"version\": \"0\",\n \"lessThan\": \"3.12\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"4.19.322\",\n \"lessThanOrEqual\": \"4.19.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"5.4.284\",\n \"lessThanOrEqual\": \"5.4.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"5.10.226\",\n \"lessThanOrEqual\": \"5.10.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"5.15.167\",\n \"lessThanOrEqual\": \"5.15.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.1.110\",\n \"lessThanOrEqual\": \"6.1.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.6.51\",\n \"lessThanOrEqual\": \"6.6.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.10.10\",\n \"lessThanOrEqual\": \"6.10.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.11\",\n \"lessThanOrEqual\": \"*\",\n \"status\": \"unaffected\",\n \"versionType\": \"original_commit_for_fix\"\n }\n ]\n }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","score":7.8,"severity":"HIGH"}],"references":["https://git.kernel.org/stable/c/0790b89c7e911003b8c50ae50e3ac7645de1fae9","https://git.kernel.org/stable/c/df77a678c33871a6e4ac5b54a71662f1d702335b","https://git.kernel.org/stable/c/e2355d513b89a2cb511b4ded0deb426cdb01acd0","https://git.kernel.org/stable/c/04e85a3285b0e5c5af6fd2c0fd6e95ffecc01945","https://git.kernel.org/stable/c/7253b4fed46471cc247c6cacefac890a8472c083","https://git.kernel.org/stable/c/78c6e39fef5c428960aff742149bba302dd46f5a","https://git.kernel.org/stable/c/81c68e218ab883dfa368460a59b674084c0240da","https://git.kernel.org/stable/c/a4e772898f8bf2e7e1cf661a12c60a5612c4afab"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2024-46750","license":"CVE Program Terms of Use","key":"cve-program:CVE-2024-46750","identifiers":["CVE-2024-46750"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. 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