{"id":"AZL-85395","summary":"CVE-2026-43010 affecting package kernel for versions less than 6.6.144.1-1","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Reject sleepable kprobe_multi programs at attach time\n\nkprobe.multi programs run in atomic/RCU context and cannot sleep.\nHowever, bpf_kprobe_multi_link_attach() did not validate whether the\nprogram being attached had the sleepable flag set, allowing sleepable\nhelpers such as bpf_copy_from_user() to be invoked from a non-sleepable\ncontext.\n\nThis causes a \"sleeping function called from invalid context\" splat:\n\n  BUG: sleeping function called from invalid context at ./include/linux/uaccess.h:169\n  in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 1787, name: sudo\n  preempt_count: 1, expected: 0\n  RCU nest depth: 2, expected: 0\n\nFix this by rejecting sleepable programs early in\nbpf_kprobe_multi_link_attach(), before any further processing.","modified":"2026-08-31T05:26:27Z","published":"2026-05-01T15:16:44Z","upstream":["CVE-2026-43010"],"references":[{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-43010"}],"affected":[{"package":{"name":"kernel","ecosystem":"Azure Linux:3","purl":"pkg:rpm/azure-linux/kernel"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.6.144.1-1"}]}],"database_specific":{"source":"https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-85395.json"}}],"schema_version":"1.9.0"}