bpf: Mark tracing_multi trampolines as ftrace managed

{
  "id": "5c249f92123bd48b1034cd0bfc4706b31adddfc779f03bd4d36b4e89f97810c1",
  "url": "https://osv.dev/vulnerability/CVE-2026-93111",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "bpf: Mark tracing_multi trampolines as ftrace managed",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: bpf: Mark tracing_multi trampolines as ftrace managed Since tracing_multi link does not set ftrace_managed, it would fail to release the tracing_multi link when attaching tracing_multi link and then attaching fentry link. [ 3.714215] WARNING: kernel/bpf/trampoline.c:1727 at bpf_trampoline_multi_detach+0x20b/0x240, CPU#1: test_progs/97 ... [ 3.733170] bpf_tracing_multi_link_release+0x14/0x30 [ 3.733890] bpf_link_free+0x58/0x130 [ 3.734414] bpf_link_release+0x23/0x30 Fix it by setting 'ftrace_managed = true' in register_fentry_multi().",
    "evidence": "osv:CVE-2026-93111",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "7.2.6",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "high",
    "structured": {
      "id": "CVE-2026-93111",
      "aliases": [
        "CVE-2026-93111"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
              "events": [
                {
                  "introduced": "aef4dfa790b22d8052cfb78044eadbe03c876c39"
                },
                {
                  "fixed": "280145253fd38fa975cc04963ddaf74c7f415011"
                },
                {
                  "fixed": "30bdd6d1384d894931f113eb595636092d8e650c"
                }
              ]
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-93111.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "7.2.0"
                },
                {
                  "fixed": "7.2.6"
                }
              ]
            }
          ],
          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-93111.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:42.996956743Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/280145253fd38fa975cc04963ddaf74c7f415011",
        "https://git.kernel.org/stable/c/30bdd6d1384d894931f113eb595636092d8e650c",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/93xxx/CVE-2026-93111.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-93111",
        "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
      ],
      "provider_metadata": {
        "cna_assigner": "Linux",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/93xxx/CVE-2026-93111.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-93111",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 511009,
  "published_at": "2026-09-17T16:11:20.464+00:00"
}