{"cve":"CVE-2025-68216","nvd":{"published":"2025-12-16T14:15:54.627","modified":"2026-10-14T13:10:00.187","status":"Deferred","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nLoongArch: BPF: Disable trampoline for kernel module function trace\n\nThe current LoongArch BPF trampoline implementation is incompatible\nwith tracing functions in kernel modules. This causes several severe\nand user-visible problems:\n\n* The `bpf_selftests/module_attach` test fails consistently.\n* Kernel lockup when a BPF program is attached to a module function [1].\n* Critical kernel modules like WireGuard experience traffic disruption\n  when their functions are traced with fentry [2].\n\nGiven the severity and the potential for other unknown side-effects, it\nis safest to disable the feature entirely for now. This patch prevents\nthe BPF subsystem from allowing trampoline attachments to kernel module\nfunctions on LoongArch.\n\nThis is a temporary mitigation until the core issues in the trampoline\ncode for kernel module handling can be identified and fixed.\n\n[root@fedora bpf]# ./test_progs -a module_attach -v\nbpf_testmod.ko is already unloaded.\nLoading bpf_testmod.ko...\nSuccessfully loaded bpf_testmod.ko.\ntest_module_attach:PASS:skel_open 0 nsec\ntest_module_attach:PASS:set_attach_target 0 nsec\ntest_module_attach:PASS:set_attach_target_explicit 0 nsec\ntest_module_attach:PASS:skel_load 0 nsec\nlibbpf: prog 'handle_fentry': failed to attach: -ENOTSUPP\nlibbpf: prog 'handle_fentry': failed to auto-attach: -ENOTSUPP\ntest_module_attach:FAIL:skel_attach skeleton attach failed: -524\nSummary: 0/0 PASSED, 0 SKIPPED, 1 FAILED\nSuccessfully unloaded bpf_testmod.ko.\n\n[1]: https://lore.kernel.org/loongarch/CAK3+h2wDmpC-hP4u4pJY8T-yfKyk4yRzpu2LMO+C13FMT58oqQ@mail.gmail.com/\n[2]: https://lore.kernel.org/loongarch/CAK3+h2wYcpc+OwdLDUBvg2rF9rvvyc5amfHT-KcFaK93uoELPg@mail.gmail.com/","cvss_v4":null,"cvss_v3":null,"cwes":[],"references":["https://git.kernel.org/stable/c/44eb3849378be5f72b8be03edbacbdcd6f5eade4","https://git.kernel.org/stable/c/677e6123e3d24adaa252697dc89740f2ac07664e"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:17:07.138532058+00:00"},"epss":{"cve":"CVE-2025-68216","score":0.00185,"percentile":0.07987,"date":"2026-10-25"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}