{"id":"AZL-101849","summary":"CVE-2026-90347 affecting package kernel 6.6.150.1-1","details":"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.","modified":"2026-09-20T05:33:47Z","published":"2026-09-17T17:17:33Z","upstream":["CVE-2026-90347"],"references":[{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-90347"}],"affected":[{"package":{"name":"kernel","ecosystem":"Azure Linux:3","purl":"pkg:rpm/azure-linux/kernel"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"last_affected":"6.6.150.1-1"}]}],"database_specific":{"source":"https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-101849.json"}}],"schema_version":"1.9.0"}