{"id":"CVE-2021-47002","state":"PUBLISHED","title":"SUNRPC: Fix null pointer dereference in svc_rqst_free()","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nSUNRPC: Fix null pointer dereference in svc_rqst_free()\n\nWhen alloc_pages_node() returns null in svc_rqst_alloc(), the\nnull rq_scratch_page pointer will be dereferenced when calling\nput_page() in svc_rqst_free(). Fix it by adding a null check.\n\nAddresses-Coverity: (\"Dereference after null check\")","publishedAt":"2024-02-28T08:13:24.091Z","updatedAt":"2026-10-14T12:12:17.126Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"79e4e0d489c8e72b9efa388e504a036eec1550c6","status":"affected","lessThan":"3de81c1e84bf84803308da3272a829a7655c5336","versionType":"git"},{"version":"5191955d6fc65e6d4efe8f4f10a6028298f57281","status":"affected","lessThan":"1e10f58f1c9a6b667b045513c7a4e6111c24fe7c","versionType":"git"},{"version":"5191955d6fc65e6d4efe8f4f10a6028298f57281","status":"affected","lessThan":"c664aaec9aee544538a78ba4893a44bc73a6d742","versionType":"git"},{"version":"5191955d6fc65e6d4efe8f4f10a6028298f57281","status":"affected","lessThan":"b9f83ffaa0c096b4c832a43964fe6bff3acffe10","versionType":"git"},{"version":"5.10.220","status":"affected","lessThan":"5.10.221","versionType":"semver"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/sunrpc/svc.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.11","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.11","versionType":"semver"},{"version":"5.10.221","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.11.22","status":"unaffected","lessThanOrEqual":"5.11.*","versionType":"semver"},{"version":"5.12.5","status":"unaffected","lessThanOrEqual":"5.12.*","versionType":"semver"},{"version":"5.13","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/sunrpc/svc.c"]}],"references":["https://git.kernel.org/stable/c/3de81c1e84bf84803308da3272a829a7655c5336","https://git.kernel.org/stable/c/1e10f58f1c9a6b667b045513c7a4e6111c24fe7c","https://git.kernel.org/stable/c/c664aaec9aee544538a78ba4893a44bc73a6d742","https://git.kernel.org/stable/c/b9f83ffaa0c096b4c832a43964fe6bff3acffe10","https://cert-portal.siemens.com/productcert/html/ssa-265688.html"],"weaknesses":[],"ingestedAt":"2026-10-29T19:49:19.404Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2021/47xxx/CVE-2021-47002.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2021-47002","state":"PUBLISHED","datePublished":"2024-02-28T08:13:24.091Z","dateUpdated":"2026-10-14T12:12:17.126Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2024-02-27T18:42:55.950Z"},"containers":{"cna":{"title":"SUNRPC: Fix null pointer dereference in svc_rqst_free()","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nSUNRPC: Fix null pointer dereference in svc_rqst_free()\n\nWhen alloc_pages_node() returns null in svc_rqst_alloc(), the\nnull rq_scratch_page pointer will be dereferenced when calling\nput_page() in svc_rqst_free(). 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