{"cve":"CVE-2026-80756","nvd":{"published":"2026-09-03T13:06:15.360","modified":"2026-09-03T13:06:15.360","status":"Received","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nselinux: do not cancel a policy conversion that never started\n\nsel_write_load() calls selinux_policy_cancel() when sel_make_policy_nodes()\nfails, and that helper dereferences the outgoing policy to cancel its\nsidtab conversion. On the first policy load there is no outgoing policy:\nsecurity_load_policy() returns early for that case, before it converts\nanything, and state->policy is still NULL. A first load that fails while\nbuilding the selinuxfs tree therefore takes a NULL dereference in\nselinux_policy_cancel(), reached from a write(2) to /sys/fs/selinux/load.\n\nSkip the cancel when there is no old policy, mirroring the check\nsecurity_load_policy() already makes before it converts.","cvss_v4":null,"cvss_v3":null,"cwes":[],"references":["https://git.kernel.org/stable/c/1059789ae9f99cbbe3a78e361e9c0976beb5958b","https://git.kernel.org/stable/c/1acc317d67a755a45e32419a15d70e403fa43f0e","https://git.kernel.org/stable/c/1b4ff94ae7c580c880291519fb0e3e2bd075beef","https://git.kernel.org/stable/c/219c96de5d9b6b4af7e8576ad897b774cc3ee9a7","https://git.kernel.org/stable/c/2d29983104f06f5b0babcd5a25a0f0408272cd27"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:50:50.842544443+00:00"},"epss":{"cve":"CVE-2026-80756","score":0.00165,"percentile":0.05661,"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."]}