{"id":"CVE-2026-93111","aliases":[],"url":"https://o3.security/vulnerability/CVE-2026-93111","summary":"bpf: Mark tracing_multi trampolines as ftrace managed","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Mark tracing_multi trampolines as ftrace managed\n\nSince tracing_multi link does not set ftrace_managed, it would fail to\nrelease the tracing_multi link when attaching tracing_multi link and\nthen attaching fentry link.\n\n[    3.714215] WARNING: kernel/bpf/trampoline.c:1727 at bpf_trampoline_multi_detach+0x20b/0x240, CPU#1: test_progs/97\n...\n[    3.733170]  bpf_tracing_multi_link_release+0x14/0x30\n[    3.733890]  bpf_link_free+0x58/0x130\n[    3.734414]  bpf_link_release+0x23/0x30\n\nFix it by setting 'ftrace_managed = true' in register_fentry_multi().","published":"2026-09-17T16:11:20.464Z","modified":"2026-09-19T03:47:31.507606422Z","cvss":{"score":7.8,"severity":"HIGH","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"},"epss":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[{"ecosystem":"Linux","name":"Kernel","fixedVersion":"7.2.6"}],"fix":null,"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/280145253fd38fa975cc04963ddaf74c7f415011"},{"type":"WEB","url":"https://git.kernel.org/stable/c/30bdd6d1384d894931f113eb595636092d8e650c"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/93xxx/CVE-2026-93111.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-93111"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-09-19T03:47:31.507606422Z"}}