{"cve":"CVE-2026-72010","nvd":{"published":"2026-08-15T06:20:59.670","modified":"2026-08-17T06:17:58.447","status":"Received","description":"In the Linux kernel, the following vulnerability has been resolved:\n\ncgroup/cpuset: rebind mm mempolicy to effective_mems, not mems_allowed\n\nCreating a child cpuset where cpuset.mems is never set leads to a div/0\nwhen a VMA mempolicy with MPOL_F_RELATIVE_NODES rebinds in response to a\nCPU hotplug event.\n\nReproduction steps:\n 1) Create a cgroup w/ cpuset controls (do not set cpuset.mems)\n 2) Move the task into the child cpuset\n 3) Create a VMA mempolicy for that task with MPOL_F_RELATIVE_NODES\n 4) unplug and hotplug a cpu\n      echo 0 > /sys/devices/system/cpu/cpu1/online\n      echo 1 > /sys/devices/system/cpu/cpu1/online\n 5) mempolicy rebind does a div/0 in mpol_relative_nodemask on the\n    call to __nodes_fold()\n\nThe cpuset code passes (cs->mems_allowed) which is not guaranteed to have\nnodes to the rebind routine.  Use cs->effective_mems instead, which is\nguaranteed to have a non-empty nodemask once we reach that code path.\n\n[ david: add a comment, slightly rephrase description ]","cvss_v4":null,"cvss_v3":null,"cwes":[],"references":["https://git.kernel.org/stable/c/02f67c4f88be8e3dbd91951d13cdcc5bcc82e9c7","https://git.kernel.org/stable/c/4b06449384b9ee5b3372bab60601ba5cd4162086","https://git.kernel.org/stable/c/b7adeba2a21c98c7b20f18e27e3ead86bdb5e08d","https://git.kernel.org/stable/c/b983c56426383e4a06fa5970c4e33cee879b1482","https://git.kernel.org/stable/c/c17f06d8a085d6be58b544a440ce243f5e441a60"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:48:17.459049833+00:00"},"epss":{"cve":"CVE-2026-72010","score":0.0022,"percentile":0.12526,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}