{"id":"CVE-2026-90397","revision":"d2936af158b94205ae4cd275a5f60ed1","records":[{"revision":"d2936af158b94205ae4cd275a5f60ed1","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-90397","aliases":[],"title":"firmware: qcom: scm: Fix NULL dereference in IRQ handler before __scm is published","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nfirmware: qcom: scm: Fix NULL dereference in IRQ handler before __scm is published\n\nIn qcom_scm_probe(), devm_request_threaded_irq() is called before\nsmp_store_release(&__scm, scm). Two paths can dereference __scm before\nit is published, both causing a NULL pointer dereference.\n\nThe IRQ handler receives scm via its data argument but passes only wq_ctx\nto qcom_scm_waitq_wakeup() and qcom_scm_get_completion(), which then\ndereference __scm directly. Thread scm through both functions so the IRQ\nhandler path never touches __scm.\n\nNon-atomic SMC calls made during probe (e.g. from qcom_tzmem_init via\nqcom_scm_shm_bridge_enable) can return WAITQ_SLEEP, causing\nqcom_scm_wait_for_wq_completion() to run before __scm is published and\ndereference it. Add platform_set_drvdata(pdev, scm) early in probe and\nchange qcom_scm_wait_for_wq_completion() to take the device pointer and\nuse dev_get_drvdata() to reach scm, removing any dependency on __scm.","state":0,"publishedAt":"2026-09-17T16:09:28.967+00:00","modifiedAt":"2026-10-21T12:51:27.984+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/firmware/qcom/qcom_scm-smc.c\",\n                        \"drivers/firmware/qcom/qcom_scm.c\",\n                        \"drivers/firmware/qcom/qcom_scm.h\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"6bf32599223634294cdc6efb359ffaab1d68073c\",\n                            \"lessThan\": \"c9c1e3da0a206270e5df470ca1c82de52190d68c\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"6bf32599223634294cdc6efb359ffaab1d68073c\",\n                            \"lessThan\": \"b451f38cb7f5bca78484362347f039c08c94de95\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"6bf32599223634294cdc6efb359ffaab1d68073c\",\n                            \"lessThan\": \"1d753df5899ec356272d08bc4718e82844e4bdf0\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"6bf32599223634294cdc6efb359ffaab1d68073c\",\n                            \"lessThan\": \"f312ef5026678f14caf1378c5f7fffdf667f9c81\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"6bf32599223634294cdc6efb359ffaab1d68073c\",\n                            \"lessThan\": \"966d23c7e68ea32679275a7e3d2383181002c868\",\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/firmware/qcom/qcom_scm-smc.c\",\n                        \"drivers/firmware/qcom/qcom_scm.c\",\n                        \"drivers/firmware/qcom/qcom_scm.h\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"6.3\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"6.3\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.6.160\",\n                            \"lessThanOrEqual\": \"6.6.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.12.110\",\n                            \"lessThanOrEqual\": \"6.12.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18.52\",\n                            \"lessThanOrEqual\": \"6.18.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.2.6\",\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/c9c1e3da0a206270e5df470ca1c82de52190d68c","https://git.kernel.org/stable/c/b451f38cb7f5bca78484362347f039c08c94de95","https://git.kernel.org/stable/c/1d753df5899ec356272d08bc4718e82844e4bdf0","https://git.kernel.org/stable/c/f312ef5026678f14caf1378c5f7fffdf667f9c81","https://git.kernel.org/stable/c/966d23c7e68ea32679275a7e3d2383181002c868"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-90397","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-90397","identifiers":["CVE-2026-90397"]},"retained":false,"historicalAffected":[]}],"coverage":[]}