{"attribution":"This product uses data from the NVD API but is not endorsed or certified by the NVD.","cve":{"id":"CVE-2025-39914","sourceIdentifier":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","published":"2025-10-01T08:15:34.520","lastModified":"2026-10-19T21:10:00.160","vulnStatus":"Analyzed","cveTags":[],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\ntracing: Silence warning when chunk allocation fails in trace_pid_write\n\nSyzkaller trigger a fault injection warning:\n\nWARNING: CPU: 1 PID: 12326 at tracepoint_add_func+0xbfc/0xeb0\nModules linked in:\nCPU: 1 UID: 0 PID: 12326 Comm: syz.6.10325 Tainted: G U 6.14.0-rc5-syzkaller #0\nTainted: [U]=USER\nHardware name: Google Compute Engine/Google Compute Engine\nRIP: 0010:tracepoint_add_func+0xbfc/0xeb0 kernel/tracepoint.c:294\nCode: 09 fe ff 90 0f 0b 90 0f b6 74 24 43 31 ff 41 bc ea ff ff ff\nRSP: 0018:ffffc9000414fb48 EFLAGS: 00010283\nRAX: 00000000000012a1 RBX: ffffffff8e240ae0 RCX: ffffc90014b78000\nRDX: 0000000000080000 RSI: ffffffff81bbd78b RDI: 0000000000000001\nRBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000\nR10: 0000000000000001 R11: 0000000000000001 R12: ffffffffffffffef\nR13: 0000000000000000 R14: dffffc0000000000 R15: ffffffff81c264f0\nFS:  00007f27217f66c0(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000\nCS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\nCR2: 0000001b2e80dff8 CR3: 00000000268f8000 CR4: 00000000003526f0\nDR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000\nDR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400\nCall Trace:\n \u003cTASK\u003e\n tracepoint_probe_register_prio+0xc0/0x110 kernel/tracepoint.c:464\n register_trace_prio_sched_switch include/trace/events/sched.h:222 [inline]\n register_pid_events kernel/trace/trace_events.c:2354 [inline]\n event_pid_write.isra.0+0x439/0x7a0 kernel/trace/trace_events.c:2425\n vfs_write+0x24c/0x1150 fs/read_write.c:677\n ksys_write+0x12b/0x250 fs/read_write.c:731\n do_syscall_x64 arch/x86/entry/common.c:52 [inline]\n do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83\n entry_SYSCALL_64_after_hwframe+0x77/0x7f\n\nWe can reproduce the warning by following the steps below:\n1. echo 8 \u003e\u003e set_event_notrace_pid. Let tr-\u003efiltered_pids owns one pid\n   and register sched_switch tracepoint.\n2. echo ' ' \u003e\u003e set_event_pid, and perform fault injection during chunk\n   allocation of trace_pid_list_alloc. Let pid_list with no pid and\nassign to tr-\u003efiltered_pids.\n3. echo ' ' \u003e\u003e set_event_pid. Let pid_list is NULL and assign to\n   tr-\u003efiltered_pids.\n4. echo 9 \u003e\u003e set_event_pid, will trigger the double register\n   sched_switch tracepoint warning.\n\nThe reason is that syzkaller injects a fault into the chunk allocation\nin trace_pid_list_alloc, causing a failure in trace_pid_list_set, which\nmay trigger double register of the same tracepoint. This only occurs\nwhen the system is about to crash, but to suppress this warning, let's\nadd failure handling logic to trace_pid_list_set."},{"lang":"es","value":"En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\ntrazado: Silenciar advertencia cuando la asignación de fragmentos falla en trace_pid_write\n\nSyzkaller activa una advertencia de inyección de fallos:\n\nADVERTENCIA: CPU: 1 PID: 12326 en tracepoint_add_func+0xbfc/0xeb0\nMódulos enlazados:\nCPU: 1 UID: 0 PID: 12326 Comm: syz.6.10325 Tainted: G U 6.14.0-rc5-syzkaller #0\nTainted: [U]=USER\nNombre del hardware: Google Compute Engine/Google Compute Engine\nRIP: 0010:tracepoint_add_func+0xbfc/0xeb0 kernel/tracepoint.c:294\nCódigo: 09 fe ff 90 0f 0b 90 0f b6 74 24 43 31 ff 41 bc ea ff ff ff\nRSP: 0018:ffffc9000414fb48 EFLAGS: 00010283\nRAX: 00000000000012a1 RBX: ffffffff8e240ae0 RCX: ffffc90014b78000\nRDX: 0000000000080000 RSI: ffffffff81bbd78b RDI: 0000000000000001\nRBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000\nR10: 0000000000000001 R11: 0000000000000001 R12: ffffffffffffffef\nR13: 0000000000000000 R14: dffffc0000000000 R15: ffffffff81c264f0\nFS:  00007f27217f66c0(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000\nCS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\nCR2: 0000001b2e80dff8 CR3: 00000000268f8000 CR4: 00000000003526f0\nDR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000\nDR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400\nRastro de Llamada:\n \u003cTAREA\u003e\n tracepoint_probe_register_prio+0xc0/0x110 kernel/tracepoint.c:464\n register_trace_prio_sched_switch include/trace/events/sched.h:222 [en línea]\n register_pid_events kernel/trace/trace_events.c:2354 [en línea]\n event_pid_write.isra.0+0x439/0x7a0 kernel/trace/trace_events.c:2425\n vfs_write+0x24c/0x1150 fs/read_write.c:677\n ksys_write+0x12b/0x250 fs/read_write.c:731\n do_syscall_x64 arch/x86/entry/common.c:52 [en línea]\n do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83\n entry_SYSCALL_64_after_hwframe+0x77/0x7f\n\nPodemos reproducir la advertencia siguiendo los pasos a continuación:\n1. echo 8 \u003e\u003e set_event_notrace_pid. Dejar que tr-\u003efiltered_pids posea un pid y registrar el punto de rastreo sched_switch.\n2. echo ' ' \u003e\u003e set_event_pid, y realizar inyección de fallos durante la asignación de fragmentos de trace_pid_list_alloc. Dejar pid_list sin pid y asignar a tr-\u003efiltered_pids.\n3. echo ' ' \u003e\u003e set_event_pid. Dejar pid_list como NULL y asignar a tr-\u003efiltered_pids.\n4. echo 9 \u003e\u003e set_event_pid, activará la advertencia de doble registro del punto de rastreo sched_switch.\n\nLa razón es que syzkaller inyecta un fallo en la asignación de fragmentos en trace_pid_list_alloc, causando un fallo en trace_pid_list_set, lo que puede activar el doble registro del mismo punto de rastreo. Esto solo ocurre cuando el sistema está a punto de colapsar, pero para suprimir esta advertencia, añadamos lógica de manejo de fallos a trace_pid_list_set."}],"affected":[{"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","affectedData":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","programFiles":["kernel/trace/trace.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","versions":[{"version":"8d6e90983ade25ec7925211ac31d9ccaf64b7edf","lessThan":"7583a73c53f1d1ae7a39b130eb7190a11f0a902f","versionType":"git","status":"affected"},{"version":"8d6e90983ade25ec7925211ac31d9ccaf64b7edf","lessThan":"1262bda871dace8c6efae25f3b6a2d34f6f06d54","versionType":"git","status":"affected"},{"version":"8d6e90983ade25ec7925211ac31d9ccaf64b7edf","lessThan":"88525accf16947ab459f8e91c27c8c53e1d612d7","versionType":"git","status":"affected"},{"version":"8d6e90983ade25ec7925211ac31d9ccaf64b7edf","lessThan":"793338906ff57d8c683f44fe48ca99d49c8782a7","versionType":"git","status":"affected"},{"version":"8d6e90983ade25ec7925211ac31d9ccaf64b7edf","lessThan":"cd4453c5e983cf1fd5757e9acb915adb1e4602b6","versionType":"git","status":"affected"}]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","programFiles":["kernel/trace/trace.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","versions":[{"version":"5.16","status":"affected"},{"version":"0","lessThan":"5.16","versionType":"semver","status":"unaffected"},{"version":"6.1.153","lessThanOrEqual":"6.1.*","versionType":"semver","status":"unaffected"},{"version":"6.6.107","lessThanOrEqual":"6.6.*","versionType":"semver","status":"unaffected"},{"version":"6.12.48","lessThanOrEqual":"6.12.*","versionType":"semver","status":"unaffected"},{"version":"6.16.8","lessThanOrEqual":"6.16.*","versionType":"semver","status":"unaffected"},{"version":"6.17","lessThanOrEqual":"*","versionType":"original_commit_for_fix","status":"unaffected"}]}]}],"metrics":{"cvssMetricV31":[{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","baseScore":5.5,"baseSeverity":"MEDIUM","attackVector":"LOCAL","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH"},"exploitabilityScore":1.8,"impactScore":3.6}]},"weaknesses":[{"source":"nvd@nist.gov","type":"Primary","description":[{"lang":"en","value":"CWE-415"}]}],"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.16","versionEndExcluding":"6.1.153","matchCriteriaId":"39B3B4F7-FA64-4E7C-B55D-53A5D004A639"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.2","versionEndExcluding":"6.6.107","matchCriteriaId":"D273EDA6-2CFE-4EBD-B024-62EB057830F3"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.7","versionEndExcluding":"6.12.48","matchCriteriaId":"9652E701-5C8E-49CF-89A5-499E214A5902"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.13","versionEndExcluding":"6.16.8","matchCriteriaId":"8DA00A4E-AABB-4A69-AB39-67B22D0B36D2"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:6.17:rc1:*:*:*:*:*:*","matchCriteriaId":"327D22EF-390B-454C-BD31-2ED23C998A1C"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:6.17:rc2:*:*:*:*:*:*","matchCriteriaId":"C730CD9A-D969-4A8E-9522-162AAF7C0EE9"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:6.17:rc3:*:*:*:*:*:*","matchCriteriaId":"39982C4B-716E-4B2F-8196-FA301F47807D"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:6.17:rc4:*:*:*:*:*:*","matchCriteriaId":"340BEEA9-D70D-4290-B502-FBB1032353B1"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:6.17:rc5:*:*:*:*:*:*","matchCriteriaId":"47E4C5C0-079F-4838-971B-8C503D48FCC2"}]}]},{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*","matchCriteriaId":"FA6FEEC2-9F11-4643-8827-749718254FED"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/1262bda871dace8c6efae25f3b6a2d34f6f06d54","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/7583a73c53f1d1ae7a39b130eb7190a11f0a902f","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/793338906ff57d8c683f44fe48ca99d49c8782a7","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/88525accf16947ab459f8e91c27c8c53e1d612d7","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/cd4453c5e983cf1fd5757e9acb915adb1e4602b6","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html","source":"af854a3a-2127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Party Advisory"]}]}}