{"id":"CVE-2026-90427","revision":null,"records":[{"revision":"1276110b44484b84ad1762e1e3f438fb","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-90427","aliases":[],"title":"iommu/tegra241-cmdqv: Don't fall back to a freed smmu after devm_krealloc()","description":"In the Linux kernel, the following vulnerability has been resolved:\n\niommu/tegra241-cmdqv: Don't fall back to a freed smmu after devm_krealloc()\n\n__tegra241_cmdqv_probe() uses devm_krealloc() to grow @smmu into the larger\ntegra241_cmdqv, which frees the original @smmu once it relocates. A failure\nafter that returned NULL, and the caller then dereferenced the freed @smmu\non its fallback path.\n\nReturn an int and take @smmu by reference instead, then update *smmu to the\nreallocated pointer after devm_krealloc() succeeds, so the caller and its\nfallback path both use the live @smmu rather than the freed original.","state":0,"publishedAt":"2026-09-17T16:09:49.121+00:00","modifiedAt":"2026-10-21T12:51:38.034+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/iommu/arm/arm-smmu-v3/tegra241-cmdqv.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"918eb5c856f6ce4cf93b4b38e4b5e156905c5943\",\n                            \"lessThan\": \"ea2edb27ef2648d8687cd0fc3ec3ba1793436e7e\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"918eb5c856f6ce4cf93b4b38e4b5e156905c5943\",\n                            \"lessThan\": \"268cbe3a36ae57a2ec09601f343b92f6f092d505\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"918eb5c856f6ce4cf93b4b38e4b5e156905c5943\",\n                            \"lessThan\": \"86197679b293f0601c3331d545f99a70a7780aa9\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"918eb5c856f6ce4cf93b4b38e4b5e156905c5943\",\n                            \"lessThan\": \"d4d05f55e9da646ec03adfa77260eb46f4163749\",\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/iommu/arm/arm-smmu-v3/tegra241-cmdqv.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"6.12\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"6.12\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.12.114\",\n                            \"lessThanOrEqual\": \"6.12.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18.57\",\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":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","score":7.4,"severity":"HIGH"}],"references":["https://git.kernel.org/stable/c/ea2edb27ef2648d8687cd0fc3ec3ba1793436e7e","https://git.kernel.org/stable/c/268cbe3a36ae57a2ec09601f343b92f6f092d505","https://git.kernel.org/stable/c/86197679b293f0601c3331d545f99a70a7780aa9","https://git.kernel.org/stable/c/d4d05f55e9da646ec03adfa77260eb46f4163749"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-90427","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-90427","identifiers":["CVE-2026-90427"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. 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