{"cve":"CVE-2026-90347","nvd":{"published":"2026-09-17T17:17:33.453","modified":"2026-10-21T13:20:51.890","status":"Received","description":"In the Linux kernel, the following vulnerability has been resolved:\n\narm64: ptrace: Keep 'orig_x0' in-sync with x0 on syscall entry\n\nCommit e057b9477232 (\"arm64: syscall: Ensure saved x0 is kept in-sync\nwith tracer updates\") attempted to resolve a long-standing issue with\nsyscall entry tracing, where a tracer is able to manipulate the first\nsyscall argument without being subjected to seccomp or audit checking.\n\nUnfortunately, that fix was incomplete [1], as it failed to update\n'orig_x0' between a tracer updating x0 during a seccomp ptrace exit\n(SECCOMP_RET_TRACE) and the seccomp filter being re-evaluated.\n\nRather than add hooks to the core seccomp code, instead move the\nsynchronisation code into the ptrace GPR and syscall setting code so\nthat 'orig_x0' is kept up to date with x0 whenever we're stopped on the\nsyscall entry path.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N","score":8.4},"cwes":[],"references":["https://git.kernel.org/stable/c/332c9c1a148d0425326989c1187face8f6b2a60c","https://git.kernel.org/stable/c/88b839ce497ccb1ff92f7ae742c78dd2937ba572","https://git.kernel.org/stable/c/ce17c651a90e242ad48df0df89b1e4cebcda5e14","https://git.kernel.org/stable/c/e9e2854fcff5733ffc607e8ecc87e0e591ab41fd","https://git.kernel.org/stable/c/f433869f23841a50455c4087d85540d5b4d37cde"],"products":[],"source":"nvd","synced_at":"2026-10-22T16:41:11.231219466+00:00"},"epss":{"cve":"CVE-2026-90347","score":0.00171,"percentile":0.06493,"date":"2026-10-25"},"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."]}