Linux Kernel up to 6.17.2 LoongArch state issue

Summaryinfo

A vulnerability has been found in Linux Kernel up to 6.17.2 and classified as critical. Affected by this vulnerability is an unknown functionality of the component LoongArch. This manipulation causes state issue. This vulnerability is tracked as CVE-2025-40151. No exploit exists. The affected component should be upgraded.

Detailsinfo

A vulnerability has been found in Linux Kernel up to 6.17.2 and classified as critical. Affected by this vulnerability is an unknown part of the component LoongArch. The manipulation with an unknown input leads to a state issue vulnerability. The CWE definition for the vulnerability is CWE-371. The impact remains unknown. The summary by CVE is:

In the Linux kernel, the following vulnerability has been resolved: LoongArch: BPF: No support of struct argument in trampoline programs The current implementation does not support struct argument. This causes a oops when running bpf selftest: $ ./test_progs -a tracing_struct Oops[#1]: CPU -1 Unable to handle kernel paging request at virtual address 0000000000000018, era == 9000000085bef268, ra == 90000000844f3938 rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: rcu: 1-...0: (19 ticks this GP) idle=1094/1/0x4000000000000000 softirq=1380/1382 fqs=801 rcu: (detected by 0, t=5252 jiffies, g=1197, q=52 ncpus=4) Sending NMI from CPU 0 to CPUs 1: rcu: rcu_preempt kthread starved for 2495 jiffies! g1197 f0x0 RCU_GP_DOING_FQS(6) ->state=0x0 ->cpu=2 rcu: Unless rcu_preempt kthread gets sufficient CPU time, OOM is now expected behavior. rcu: RCU grace-period kthread stack dump: task:rcu_preempt state:I stack:0 pid:15 tgid:15 ppid:2 task_flags:0x208040 flags:0x00000800 Stack : 9000000100423e80 0000000000000402 0000000000000010 90000001003b0680 9000000085d88000 0000000000000000 0000000000000040 9000000087159350 9000000085c2b9b0 0000000000000001 900000008704a000 0000000000000005 00000000ffff355b 00000000ffff355b 0000000000000000 0000000000000004 9000000085d90510 0000000000000000 0000000000000002 7b5d998f8281e86e 00000000ffff355c 7b5d998f8281e86e 000000000000003f 9000000087159350 900000008715bf98 0000000000000005 9000000087036000 900000008704a000 9000000100407c98 90000001003aff80 900000008715c4c0 9000000085c2b9b0 00000000ffff355b 9000000085c33d3c 00000000000000b4 0000000000000000 9000000007002150 00000000ffff355b 9000000084615480 0000000007000002 ... Call Trace: [<9000000085c2a868>] __schedule+0x410/0x1520 [<9000000085c2b9ac>] schedule+0x34/0x190 [<9000000085c33d38>] schedule_timeout+0x98/0x140 [<90000000845e9120>] rcu_gp_fqs_loop+0x5f8/0x868 [<90000000845ed538>] rcu_gp_kthread+0x260/0x2e0 [<900000008454e8a4>] kthread+0x144/0x238 [<9000000085c26b60>] ret_from_kernel_thread+0x28/0xc8 [<90000000844f20e4>] ret_from_kernel_thread_asm+0xc/0x88 rcu: Stack dump where RCU GP kthread last ran: Sending NMI from CPU 0 to CPUs 2: NMI backtrace for cpu 2 skipped: idling at idle_exit+0x0/0x4 Reject it for now.

It is possible to read the advisory at git.kernel.org. This vulnerability is known as CVE-2025-40151 since 04/16/2025. The exploitation appears to be difficult. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 02/19/2026).

The vulnerability scanner Nessus provides a plugin with the ID 299491 (Ubuntu 24.04 LTS : Linux kernel (OEM) vulnerabilities (USN-8048-1)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 6.17.3 or 6.18-rc1 eliminates this vulnerability. Applying the patch d1158559315143e11bfaabcd4b2bea98c7ed1be9/e82406c7cbdd368c5459b8a45e118811d2ba0794 is able to eliminate this problem. The bugfix is ready for download at git.kernel.org. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the databases at Tenable (299491) and CERT Bund (WID-SEC-2025-2579). Be aware that VulDB is the high quality source for vulnerability data.

Affected

• Google Container-Optimized OS
• Debian Linux
• Amazon Linux 2
• Red Hat Enterprise Linux
• Ubuntu Linux
• SUSE Linux
• Oracle Linux
• SUSE openSUSE
• Open Source Linux Kernel
• RESF Rocky Linux

Productinfo

Type

• Operating System

Vendor

• Linux

Name

• Kernel

Version

• 6.17.0
• 6.17.1
• 6.17.2

License

• open-source

Website

• Vendor: https://www.kernel.org/

CPE 2.3info

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Entryinfo

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