{"id":"CVE-2026-90427","title":"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,…","summary":"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,…","severity":"high","cvss":7.4,"cvssVector":"CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","vendor":"Linux","product":"Linux","affected":["Linux >= 918eb5c856f6ce4cf93b4b38e4b5e156905c5943 < 86197679b293f0601c3331d545f99a70a7780aa9","Linux >= 918eb5c856f6ce4cf93b4b38e4b5e156905c5943 < d4d05f55e9da646ec03adfa77260eb46f4163749","Linux 6.12"],"published":"2026-09-17","updated":"2026-10-15","sourceUpdated":"2026-10-15T11:18:03.030","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-90427","references":[{"url":"https://git.kernel.org/stable/c/268cbe3a36ae57a2ec09601f343b92f6f092d505","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/86197679b293f0601c3331d545f99a70a7780aa9","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/d4d05f55e9da646ec03adfa77260eb46f4163749","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-90427.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-90427"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2536648"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-90427"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-90427"},{"url":"https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-90427.mbox"},{"url":"https://kernelcve.org/list/?q=CVE-2026-90427"},{"url":"https://git.kernel.org/stable/c/ea2edb27ef2648d8687cd0fc3ec3ba1793436e7e"}],"tags":["nvd","cve.org","csaf","vex","red-hat","score-dispute"],"epss":0.00173,"epssPercentile":0.06701,"ingestedAt":"2026-09-17T16:21:47.792Z","cwe":["CWE-416"],"scores":{"nvd":7.4,"vendor":4.7,"cna":7.4},"slug":"CVE-2026-90427","body":"## Overview\n\nIn 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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n## Vendor advisories\n\n- **Red Hat VEX** · Moderate · affected: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 9, Red Hat OpenShift Container Platform 4 · no fix planned: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 9, Red Hat OpenShift Container Platform 4 · updated 2026-10-21 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-90427.json)","depth":"twilight","depthScore":41,"depthScoreParts":{"impact":40.7,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[{"seq":207321,"id":"CVE-2026-90427","ts":1789757340801,"field":"cvss","old":null,"new":"7.4"},{"seq":207320,"id":"CVE-2026-90427","ts":1789757340801,"field":"severity","old":"none","new":"high"}]}