{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-31559", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-03-09T15:48:24.116Z", "datePublished": "2026-04-24T14:35:41.961Z", "dateUpdated": "2026-04-25T05:48:13.693Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-04-25T05:48:13.693Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nLoongArch: Fix missing NULL checks for kstrdup()\n\n1. Replace \"of_find_node_by_path(\"/\")\" with \"of_root\" to avoid multiple\ncalls to \"of_node_put()\".\n\n2. Fix a potential kernel oops during early boot when memory allocation\nfails while parsing CPU model from device tree."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["arch/loongarch/kernel/env.c"], "versions": [{"version": "facc69f43502c135c16b97d5ded7253f15597912", "lessThan": "5e7fde2c551f86e6c3de3fd7a9b1f52806ac8db0", "status": "affected", "versionType": "git"}, {"version": "70a2365e18affc5ebdaab1ca6a0b3c4f3aac2ee8", "lessThan": "a1da957c25cf751a2dce8fb7777f82ccbac0cb3e", "status": "affected", "versionType": "git"}, {"version": "70a2365e18affc5ebdaab1ca6a0b3c4f3aac2ee8", "lessThan": "b61a309743322fb57fb9afa9aa3495ac758e4f5e", "status": "affected", "versionType": "git"}, {"version": "70a2365e18affc5ebdaab1ca6a0b3c4f3aac2ee8", "lessThan": "3a28daa9b7d7c2ddf2c722e9e95d7e0928bf0cd1", "status": "affected", "versionType": "git"}, {"version": "620805dc674eab3055543496a7ef25beb9ffd2a8", "status": "affected", "versionType": "git"}, {"version": "8dfeedf9eceadc1a2fc9066b4c5230690d1cad48", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["arch/loongarch/kernel/env.c"], "versions": [{"version": "6.17", "status": "affected"}, {"version": "0", "lessThan": "6.17", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.80", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.21", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.19.11", "lessThanOrEqual": "6.19.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.0", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.12.43", "versionEndExcluding": "6.12.80"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.17", "versionEndExcluding": "6.18.21"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.17", "versionEndExcluding": "6.19.11"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.17", "versionEndExcluding": "7.0"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.15.11"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.16.2"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/5e7fde2c551f86e6c3de3fd7a9b1f52806ac8db0"}, {"url": "https://git.kernel.org/stable/c/a1da957c25cf751a2dce8fb7777f82ccbac0cb3e"}, {"url": "https://git.kernel.org/stable/c/b61a309743322fb57fb9afa9aa3495ac758e4f5e"}, {"url": "https://git.kernel.org/stable/c/3a28daa9b7d7c2ddf2c722e9e95d7e0928bf0cd1"}], "title": "LoongArch: Fix missing NULL checks for kstrdup()", "x_generator": {"engine": "bippy-1.2.0"}}}}

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{"cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nLoongArch: Fix missing NULL checks for kstrdup()\n\n1. Replace \"of_find_node_by_path(\"/\")\" with \"of_root\" to avoid multiple\ncalls to \"of_node_put()\".\n\n2. Fix a potential kernel oops during early boot when memory allocation\nfails while parsing CPU model from device tree."}], "id": "CVE-2026-31559", "lastModified": "2026-04-24T17:51:40.810", "metrics": {}, "published": "2026-04-24T15:16:30.300", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/3a28daa9b7d7c2ddf2c722e9e95d7e0928bf0cd1"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/5e7fde2c551f86e6c3de3fd7a9b1f52806ac8db0"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/a1da957c25cf751a2dce8fb7777f82ccbac0cb3e"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/b61a309743322fb57fb9afa9aa3495ac758e4f5e"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Awaiting Analysis"}

{"bugzilla": {"description": "kernel: LoongArch: Fix missing NULL checks for kstrdup()", "id": "2461517", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2461517"}, "csaw": false, "cwe": "CWE-476", "details": ["A flaw was found in the Linux kernel. During the system's initial startup, a critical error can occur if memory allocation fails while the system is reading CPU information. This is due to a missing check for empty or invalid data when duplicating strings, which can lead to a system crash, resulting in a Denial of Service (DoS)."], "name": "CVE-2026-31559", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2026-04-24T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-31559\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-31559\nhttps://lore.kernel.org/linux-cve-announce/2026042458-CVE-2026-31559-01e9@gregkh/T"]}