{"id":"CVE-2025-39974","summary":"tracing/osnoise: Fix slab-out-of-bounds in _parse_integer_limit()","details":"In the Linux kernel, the following vulnerability has been resolved:\n\ntracing/osnoise: Fix slab-out-of-bounds in _parse_integer_limit()\n\nWhen config osnoise cpus by write() syscall, the following KASAN splat may\nbe observed:\n\nBUG: KASAN: slab-out-of-bounds in _parse_integer_limit+0x103/0x130\nRead of size 1 at addr ffff88810121e3a1 by task test/447\nCPU: 1 UID: 0 PID: 447 Comm: test Not tainted 6.17.0-rc6-dirty #288 PREEMPT(voluntary)\nHardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.15.0-1 04/01/2014\nCall Trace:\n \u003cTASK\u003e\n dump_stack_lvl+0x55/0x70\n print_report+0xcb/0x610\n kasan_report+0xb8/0xf0\n _parse_integer_limit+0x103/0x130\n bitmap_parselist+0x16d/0x6f0\n osnoise_cpus_write+0x116/0x2d0\n vfs_write+0x21e/0xcc0\n ksys_write+0xee/0x1c0\n do_syscall_64+0xa8/0x2a0\n entry_SYSCALL_64_after_hwframe+0x77/0x7f\n \u003c/TASK\u003e\n\nThis issue can be reproduced by below code:\n\nconst char *cpulist = \"1\";\nint fd=open(\"/sys/kernel/debug/tracing/osnoise/cpus\", O_WRONLY);\nwrite(fd, cpulist, strlen(cpulist));\n\nFunction bitmap_parselist() was called to parse cpulist, it require that\nthe parameter 'buf' must be terminated with a '\\0' or '\\n'. Fix this issue\nby adding a '\\0' to 'buf' in osnoise_cpus_write().","modified":"2026-04-02T12:48:14.036014Z","published":"2025-10-15T07:55:56.275Z","database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/39xxx/CVE-2025-39974.json","cna_assigner":"Linux"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/930cb05a9e107777316b3ccf37f9556366669065"},{"type":"WEB","url":"https://git.kernel.org/stable/c/a2501032de0d1bc7971b2e43c03da534ac10ee9b"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/39xxx/CVE-2025-39974.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-39974"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"17f89102fe23d7389085a8820550df688f79888a"},{"fixed":"930cb05a9e107777316b3ccf37f9556366669065"},{"fixed":"a2501032de0d1bc7971b2e43c03da534ac10ee9b"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-39974.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"6.16.0"},{"fixed":"6.16.10"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-39974.json"}}],"schema_version":"1.7.5"}