{"id":"CVE-2025-39974","state":"PUBLISHED","title":"tracing/osnoise: Fix slab-out-of-bounds in _parse_integer_limit()","description":"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 <TASK>\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 </TASK>\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().","publishedAt":"2025-10-15T07:55:56.275Z","updatedAt":"2026-05-11T21:40:01.814Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"17f89102fe23d7389085a8820550df688f79888a","status":"affected","lessThan":"930cb05a9e107777316b3ccf37f9556366669065","versionType":"git"},{"version":"17f89102fe23d7389085a8820550df688f79888a","status":"affected","lessThan":"a2501032de0d1bc7971b2e43c03da534ac10ee9b","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["kernel/trace/trace_osnoise.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.16","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.16","versionType":"semver"},{"version":"6.16.10","status":"unaffected","lessThanOrEqual":"6.16.*","versionType":"semver"},{"version":"6.17","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["kernel/trace/trace_osnoise.c"]}],"references":["https://git.kernel.org/stable/c/930cb05a9e107777316b3ccf37f9556366669065","https://git.kernel.org/stable/c/a2501032de0d1bc7971b2e43c03da534ac10ee9b"],"weaknesses":[],"ingestedAt":"2026-10-29T20:09:09.358Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2025/39xxx/CVE-2025-39974.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2025-39974","state":"PUBLISHED","datePublished":"2025-10-15T07:55:56.275Z","dateUpdated":"2026-05-11T21:40:01.814Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2025-04-16T07:20:57.150Z"},"containers":{"cna":{"title":"tracing/osnoise: Fix slab-out-of-bounds in _parse_integer_limit()","descriptions":[{"lang":"en","value":"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 <TASK>\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 </TASK>\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()."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"17f89102fe23d7389085a8820550df688f79888a","status":"affected","lessThan":"930cb05a9e107777316b3ccf37f9556366669065","versionType":"git"},{"version":"17f89102fe23d7389085a8820550df688f79888a","status":"affected","lessThan":"a2501032de0d1bc7971b2e43c03da534ac10ee9b","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["kernel/trace/trace_osnoise.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.16","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.16","versionType":"semver"},{"version":"6.16.10","status":"unaffected","lessThanOrEqual":"6.16.*","versionType":"semver"},{"version":"6.17","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["kernel/trace/trace_osnoise.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/930cb05a9e107777316b3ccf37f9556366669065"},{"url":"https://git.kernel.org/stable/c/a2501032de0d1bc7971b2e43c03da534ac10ee9b"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-05-11T21:40:01.814Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.16","versionEndExcluding":"6.16.10"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.16","versionEndExcluding":"6.17"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}