{"id":"CVE-2026-43010","summary":"bpf: Reject sleepable kprobe_multi programs at attach time","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":"2026-07-21T18:53:03.464501088Z","published":"2026-05-01T14:15:16.947Z","related":["SUSE-SU-2026:22521-1","SUSE-SU-2026:22522-1","SUSE-SU-2026:22665-1","SUSE-SU-2026:22666-1","SUSE-SU-2026:2799-1","SUSE-SU-2026:2800-1"],"database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/43xxx/CVE-2026-43010.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/89327ed787746a7aa4db3c97f91d2e294228932b"},{"type":"WEB","url":"https://git.kernel.org/stable/c/d97b19fe5265f7901b2c862f88a4eb1b129a0b61"},{"type":"WEB","url":"https://git.kernel.org/stable/c/dc9a060d76c12b23c5f378ee115d5e5d03d8bbf3"},{"type":"WEB","url":"https://git.kernel.org/stable/c/eb7024bfcc5f68ed11ed9dd4891a3073c15f04a8"},{"type":"WEB","url":"https://git.kernel.org/stable/c/f952157e695fd434bdc05af63a703bb082a78717"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/43xxx/CVE-2026-43010.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-43010"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"0dcac272540613d41c05e89679e4ddb978b612f1"},{"fixed":"89327ed787746a7aa4db3c97f91d2e294228932b"},{"fixed":"d97b19fe5265f7901b2c862f88a4eb1b129a0b61"},{"fixed":"dc9a060d76c12b23c5f378ee115d5e5d03d8bbf3"},{"fixed":"f952157e695fd434bdc05af63a703bb082a78717"},{"fixed":"eb7024bfcc5f68ed11ed9dd4891a3073c15f04a8"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-43010.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"5.18.0"},{"fixed":"6.6.144"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.7.0"},{"fixed":"6.12.95"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.13.0"},{"fixed":"6.18.22"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"6.19.12"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-43010.json"}}],"schema_version":"1.7.5"}