{"cve":"CVE-2023-53859","nvd":{"published":"2025-12-09T16:17:26.630","modified":"2026-06-17T06:46:11.927","status":"Deferred","description":"In the Linux kernel, the following vulnerability has been resolved:\n\ns390/idle: mark arch_cpu_idle() noinstr\n\nlinux-next commit (\"cpuidle: tracing: Warn about !rcu_is_watching()\")\nadds a new warning which hits on s390's arch_cpu_idle() function:\n\nRCU not on for: arch_cpu_idle+0x0/0x28\nWARNING: CPU: 2 PID: 0 at include/linux/trace_recursion.h:162 arch_ftrace_ops_list_func+0x24c/0x258\nModules linked in:\nCPU: 2 PID: 0 Comm: swapper/2 Not tainted 6.2.0-rc6-next-20230202 #4\nHardware name: IBM 8561 T01 703 (z/VM 7.3.0)\nKrnl PSW : 0404d00180000000 00000000002b55c0 (arch_ftrace_ops_list_func+0x250/0x258)\n           R:0 T:1 IO:0 EX:0 Key:0 M:1 W:0 P:0 AS:3 CC:1 PM:0 RI:0 EA:3\nKrnl GPRS: c0000000ffffbfff 0000000080000002 0000000000000026 0000000000000000\n           0000037ffffe3a28 0000037ffffe3a20 0000000000000000 0000000000000000\n           0000000000000000 0000000000f4acf6 00000000001044f0 0000037ffffe3cb0\n           0000000000000000 0000000000000000 00000000002b55bc 0000037ffffe3bb8\nKrnl Code: 00000000002b55b0: c02000840051        larl    %r2,0000000001335652\n           00000000002b55b6: c0e5fff512d1        brasl   %r14,0000000000157b58\n          #00000000002b55bc: af000000            mc      0,0\n          >00000000002b55c0: a7f4ffe7            brc     15,00000000002b558e\n           00000000002b55c4: 0707                bcr     0,%r7\n           00000000002b55c6: 0707                bcr     0,%r7\n           00000000002b55c8: eb6ff0480024        stmg    %r6,%r15,72(%r15)\n           00000000002b55ce: b90400ef            lgr     %r14,%r15\nCall Trace:\n [<00000000002b55c0>] arch_ftrace_ops_list_func+0x250/0x258\n([<00000000002b55bc>] arch_ftrace_ops_list_func+0x24c/0x258)\n [<0000000000f5f0fc>] ftrace_common+0x1c/0x20\n [<00000000001044f6>] arch_cpu_idle+0x6/0x28\n [<0000000000f4acf6>] default_idle_call+0x76/0x128\n [<00000000001cc374>] do_idle+0xf4/0x1b0\n [<00000000001cc6ce>] cpu_startup_entry+0x36/0x40\n [<0000000000119d00>] smp_start_secondary+0x140/0x150\n [<0000000000f5d2ae>] restart_int_handler+0x6e/0x90\n\nMark arch_cpu_idle() noinstr like all other architectures with\nCONFIG_ARCH_WANTS_NO_INSTR (should) have it to fix this.","cvss_v4":null,"cvss_v3":null,"cwes":[],"references":["https://git.kernel.org/stable/c/49aa49952116b8fd56bfb1e8c69bce179f49bece","https://git.kernel.org/stable/c/611c390217106c46e24e1af3db83187339d447ea","https://git.kernel.org/stable/c/a9cbc1b471d291c865907542394f1c483b93a811","https://git.kernel.org/stable/c/fc60c4f12d8a056f20d8f4d0086a36c68ffa9fdc"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:16:40.427100871+00:00"},"epss":{"cve":"CVE-2023-53859","score":0.00221,"percentile":0.12753,"date":"2026-11-01"},"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."]}