{"id":"AZL-110729","summary":"CVE-2026-98937 affecting package kernel 6.6.157.1-1","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nperf/core: Check kernel access when kernel callchains are requested\n\nperf_event_open() currently gates perf_allow_kernel() only on\n!attr.exclude_kernel.\n\nHowever, users can still request kernel callchain collection with\nattr.exclude_callchain_kernel == 0 even when attr.exclude_kernel == 1.\nThat still requires kernel profiling privilege, but the existing check\ndoes not enforce it.\n\nUpdate the permission check to call perf_allow_kernel() when either\nkernel sampling is requested or kernel callchains are requested.\n\nThis keeps permission checks aligned with requested data and prevents\nunprivileged use of kernel callchain capture.","modified":"2026-10-25T05:30:37Z","published":"2026-10-23T13:17:14Z","upstream":["CVE-2026-98937"],"references":[{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-98937"}],"affected":[{"package":{"name":"kernel","ecosystem":"Azure Linux:3","purl":"pkg:rpm/azure-linux/kernel"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"last_affected":"6.6.157.1-1"}]}],"database_specific":{"source":"https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-110729.json"}}],"schema_version":"1.9.0"}