{"id":"CVE-2026-31559","state":"PUBLISHED","title":"LoongArch: Fix missing NULL checks for kstrdup()","description":"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.","publishedAt":"2026-04-24T14:35:41.961Z","updatedAt":"2026-05-23T16:05:21.935Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"facc69f43502c135c16b97d5ded7253f15597912","status":"affected","lessThan":"5e7fde2c551f86e6c3de3fd7a9b1f52806ac8db0","versionType":"git"},{"version":"70a2365e18affc5ebdaab1ca6a0b3c4f3aac2ee8","status":"affected","lessThan":"a1da957c25cf751a2dce8fb7777f82ccbac0cb3e","versionType":"git"},{"version":"70a2365e18affc5ebdaab1ca6a0b3c4f3aac2ee8","status":"affected","lessThan":"b61a309743322fb57fb9afa9aa3495ac758e4f5e","versionType":"git"},{"version":"70a2365e18affc5ebdaab1ca6a0b3c4f3aac2ee8","status":"affected","lessThan":"3a28daa9b7d7c2ddf2c722e9e95d7e0928bf0cd1","versionType":"git"},{"version":"620805dc674eab3055543496a7ef25beb9ffd2a8","status":"affected","versionType":"git"},{"version":"8dfeedf9eceadc1a2fc9066b4c5230690d1cad48","status":"affected","versionType":"git"},{"version":"6.12.43","status":"affected","lessThan":"6.12.80","versionType":"semver"},{"version":"6.15.11","status":"affected","lessThan":"6.16","versionType":"semver"},{"version":"6.16.2","status":"affected","lessThan":"6.17","versionType":"semver"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["arch/loongarch/kernel/env.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.17","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.17","versionType":"semver"},{"version":"6.12.80","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.21","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"6.19.11","status":"unaffected","lessThanOrEqual":"6.19.*","versionType":"semver"},{"version":"7.0","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["arch/loongarch/kernel/env.c"]}],"references":["https://git.kernel.org/stable/c/5e7fde2c551f86e6c3de3fd7a9b1f52806ac8db0","https://git.kernel.org/stable/c/a1da957c25cf751a2dce8fb7777f82ccbac0cb3e","https://git.kernel.org/stable/c/b61a309743322fb57fb9afa9aa3495ac758e4f5e","https://git.kernel.org/stable/c/3a28daa9b7d7c2ddf2c722e9e95d7e0928bf0cd1"],"weaknesses":[],"ingestedAt":"2026-10-29T20:11:40.391Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/31xxx/CVE-2026-31559.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-31559","state":"PUBLISHED","datePublished":"2026-04-24T14:35:41.961Z","dateUpdated":"2026-05-23T16:05:21.935Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-03-09T15:48:24.116Z"},"containers":{"cna":{"title":"LoongArch: Fix missing NULL checks for kstrdup()","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":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"facc69f43502c135c16b97d5ded7253f15597912","status":"affected","lessThan":"5e7fde2c551f86e6c3de3fd7a9b1f52806ac8db0","versionType":"git"},{"version":"70a2365e18affc5ebdaab1ca6a0b3c4f3aac2ee8","status":"affected","lessThan":"a1da957c25cf751a2dce8fb7777f82ccbac0cb3e","versionType":"git"},{"version":"70a2365e18affc5ebdaab1ca6a0b3c4f3aac2ee8","status":"affected","lessThan":"b61a309743322fb57fb9afa9aa3495ac758e4f5e","versionType":"git"},{"version":"70a2365e18affc5ebdaab1ca6a0b3c4f3aac2ee8","status":"affected","lessThan":"3a28daa9b7d7c2ddf2c722e9e95d7e0928bf0cd1","versionType":"git"},{"version":"620805dc674eab3055543496a7ef25beb9ffd2a8","status":"affected","versionType":"git"},{"version":"8dfeedf9eceadc1a2fc9066b4c5230690d1cad48","status":"affected","versionType":"git"},{"version":"6.12.43","status":"affected","lessThan":"6.12.80","versionType":"semver"},{"version":"6.15.11","status":"affected","lessThan":"6.16","versionType":"semver"},{"version":"6.16.2","status":"affected","lessThan":"6.17","versionType":"semver"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["arch/loongarch/kernel/env.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.17","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.17","versionType":"semver"},{"version":"6.12.80","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.21","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"6.19.11","status":"unaffected","lessThanOrEqual":"6.19.*","versionType":"semver"},{"version":"7.0","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["arch/loongarch/kernel/env.c"]}],"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"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-05-23T16:05:21.935Z"},"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"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}