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CVE-2025-68216— LoongArch: BPF: Disable trampoline for kernel module function trace

EPSS 0.03% · P11
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I. Basic Information for CVE-2025-68216

Vulnerability Information
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Vulnerability Title
LoongArch: BPF: Disable trampoline for kernel module function trace
Source: NVD (National Vulnerability Database)
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: LoongArch: BPF: Disable trampoline for kernel module function trace The current LoongArch BPF trampoline implementation is incompatible with tracing functions in kernel modules. This causes several severe and user-visible problems: * The `bpf_selftests/module_attach` test fails consistently. * Kernel lockup when a BPF program is attached to a module function [1]. * Critical kernel modules like WireGuard experience traffic disruption when their functions are traced with fentry [2]. Given the severity and the potential for other unknown side-effects, it is safest to disable the feature entirely for now. This patch prevents the BPF subsystem from allowing trampoline attachments to kernel module functions on LoongArch. This is a temporary mitigation until the core issues in the trampoline code for kernel module handling can be identified and fixed. [root@fedora bpf]# ./test_progs -a module_attach -v bpf_testmod.ko is already unloaded. Loading bpf_testmod.ko... Successfully loaded bpf_testmod.ko. test_module_attach:PASS:skel_open 0 nsec test_module_attach:PASS:set_attach_target 0 nsec test_module_attach:PASS:set_attach_target_explicit 0 nsec test_module_attach:PASS:skel_load 0 nsec libbpf: prog 'handle_fentry': failed to attach: -ENOTSUPP libbpf: prog 'handle_fentry': failed to auto-attach: -ENOTSUPP test_module_attach:FAIL:skel_attach skeleton attach failed: -524 Summary: 0/0 PASSED, 0 SKIPPED, 1 FAILED Successfully unloaded bpf_testmod.ko. [1]: https://lore.kernel.org/loongarch/CAK3+h2wDmpC-hP4u4pJY8T-yfKyk4yRzpu2LMO+C13FMT58oqQ@mail.gmail.com/ [2]: https://lore.kernel.org/loongarch/CAK3+h2wYcpc+OwdLDUBvg2rF9rvvyc5amfHT-KcFaK93uoELPg@mail.gmail.com/
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于LoongArch BPF trampoline与内核模块函数跟踪不兼容，可能导致内核崩溃。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

VendorProductAffected VersionsCPESubscribe
LinuxLinux f9b6b41f0cf31791541cea9644ddbedb46465801 ~ 44eb3849378be5f72b8be03edbacbdcd6f5eade4 -
LinuxLinux 6.17 -

II. Public POCs for CVE-2025-68216

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III. Intelligence Information for CVE-2025-68216

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Same Patch Batch · Linux · 2025-12-16 · 157 CVEs total

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CVE-2025-68282usb: gadget: udc: fix use-after-free in usb_gadget_state_work
CVE-2025-68281ASoC: SDCA: bug fix while parsing mipi-sdca-control-cn-list
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CVE-2025-68262crypto: zstd - fix double-free in per-CPU stream cleanup
CVE-2025-68261ext4: add i_data_sem protection in ext4_destroy_inline_data_nolock()
CVE-2025-68250hung_task: fix warnings caused by unaligned lock pointers
CVE-2025-68264ext4: refresh inline data size before write operations

Showing top 20 of 157 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

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V. Comments for CVE-2025-68216

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