{"id":"CVE-2021-47002","title":"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…","summary":"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…","severity":"medium","cvss":5.5,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","cwe":["CWE-476"],"vendor":"linux","product":"linux_kernel","affected":["linux_kernel < 5.10.221","linux_kernel >= 5.11, < 5.11.22","linux_kernel >= 5.12, < 5.12.5"],"patched":["linux_kernel 5.12.5"],"published":"2024-02-28","updated":"2026-10-14","sourceUpdated":"2026-10-14T13:17:13.247","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2021-47002","references":[{"url":"https://git.kernel.org/stable/c/1e10f58f1c9a6b667b045513c7a4e6111c24fe7c","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/3de81c1e84bf84803308da3272a829a7655c5336","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/b9f83ffaa0c096b4c832a43964fe6bff3acffe10","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/c664aaec9aee544538a78ba4893a44bc73a6d742","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/1e10f58f1c9a6b667b045513c7a4e6111c24fe7c","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://git.kernel.org/stable/c/3de81c1e84bf84803308da3272a829a7655c5336","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://git.kernel.org/stable/c/b9f83ffaa0c096b4c832a43964fe6bff3acffe10","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://git.kernel.org/stable/c/c664aaec9aee544538a78ba4893a44bc73a6d742","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://cert-portal.siemens.com/productcert/html/ssa-265688.html","label":"0b142b55-0307-4c5a-b3c9-f314f3fb7c5e"}],"tags":["nvd","cve.org"],"epss":0.00236,"epssPercentile":0.14449,"ingestedAt":"2026-10-14T13:30:58.419Z","ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2024-02-28T20:23:02.003410Z"},"slug":"CVE-2021-47002","body":"## Overview\n\nIn 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\")\n\n## Affected\n\n- `linux_kernel < 5.10.221`\n- `linux_kernel >= 5.11, < 5.11.22`\n- `linux_kernel >= 5.12, < 5.12.5`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `linux_kernel 5.12.5`","depth":"sunlit","depthScore":30,"depthScoreParts":{"impact":30.3,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}