{"api_version":"1","generated_at":"2026-05-13T06:36:46+00:00","cve":"CVE-2026-43409","urls":{"html":"https://cve.report/CVE-2026-43409","api":"https://cve.report/api/cve/CVE-2026-43409.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-43409","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-43409"},"summary":{"title":"kprobes: avoid crash when rmmod/insmod after ftrace killed","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nkprobes: avoid crash when rmmod/insmod after ftrace killed\n\nAfter we hit ftrace is killed by some errors, the kernel crash if\nwe remove modules in which kprobe probes.\n\nBUG: unable to handle page fault for address: fffffbfff805000d\nPGD 817fcc067 P4D 817fcc067 PUD 817fc8067 PMD 101555067 PTE 0\nOops: Oops: 0000 [#1] SMP KASAN PTI\nCPU: 4 UID: 0 PID: 2012 Comm: rmmod Tainted: G        W  OE\nTainted: [W]=WARN, [O]=OOT_MODULE, [E]=UNSIGNED_MODULE\nRIP: 0010:kprobes_module_callback+0x89/0x790\nRSP: 0018:ffff88812e157d30 EFLAGS: 00010a02\nRAX: 1ffffffff805000d RBX: dffffc0000000000 RCX: ffffffff86a8de90\nRDX: ffffed1025c2af9b RSI: 0000000000000008 RDI: ffffffffc0280068\nRBP: 0000000000000000 R08: 0000000000000001 R09: ffffed1025c2af9a\nR10: ffff88812e157cd7 R11: 205d323130325420 R12: 0000000000000002\nR13: ffffffffc0290488 R14: 0000000000000002 R15: ffffffffc0280040\nFS:  00007fbc450dd740(0000) GS:ffff888420331000(0000) knlGS:0000000000000000\nCS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\nCR2: fffffbfff805000d CR3: 000000010f624000 CR4: 00000000000006f0\nCall Trace:\n <TASK>\n notifier_call_chain+0xc6/0x280\n blocking_notifier_call_chain+0x60/0x90\n __do_sys_delete_module.constprop.0+0x32a/0x4e0\n do_syscall_64+0x5d/0xfa0\n entry_SYSCALL_64_after_hwframe+0x76/0x7e\n\nThis is because the kprobe on ftrace does not correctly handles\nthe kprobe_ftrace_disabled flag set by ftrace_kill().\n\nTo prevent this error, check kprobe_ftrace_disabled in\n__disarm_kprobe_ftrace() and skip all ftrace related operations.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-05-08 15:16:52","updated_at":"2026-05-12 14:10:27"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/e113f0b46d19626ec15388bcb91432c9a4fd6261","name":"https://git.kernel.org/stable/c/e113f0b46d19626ec15388bcb91432c9a4fd6261","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/cae928e3178c75602c21d67e21255d73e7e9ed4f","name":"https://git.kernel.org/stable/c/cae928e3178c75602c21d67e21255d73e7e9ed4f","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/9edc79d664832a842012ad105b1521c1a3c35ab3","name":"https://git.kernel.org/stable/c/9edc79d664832a842012ad105b1521c1a3c35ab3","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/8b6767e4141b2a42745b544d4555cf1614ba1a2d","name":"https://git.kernel.org/stable/c/8b6767e4141b2a42745b544d4555cf1614ba1a2d","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/b0ca81616a010807e91fc31db9be242b96326adc","name":"https://git.kernel.org/stable/c/b0ca81616a010807e91fc31db9be242b96326adc","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-43409","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-43409","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected ae6aa16fdc163afe6b04b6c073ad4ddd4663c03b 8b6767e4141b2a42745b544d4555cf1614ba1a2d git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected ae6aa16fdc163afe6b04b6c073ad4ddd4663c03b b0ca81616a010807e91fc31db9be242b96326adc git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected ae6aa16fdc163afe6b04b6c073ad4ddd4663c03b cae928e3178c75602c21d67e21255d73e7e9ed4f git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected ae6aa16fdc163afe6b04b6c073ad4ddd4663c03b 9edc79d664832a842012ad105b1521c1a3c35ab3 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected ae6aa16fdc163afe6b04b6c073ad4ddd4663c03b e113f0b46d19626ec15388bcb91432c9a4fd6261 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 3.7","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 3.7 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.6.130 6.6.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12.78 6.12.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.19 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.19.9 6.19.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.0 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":{"cve_year":"2026","cve_id":"43409","cve":"CVE-2026-43409","epss":"0.000180000","percentile":"0.049180000","score_date":"2026-05-12","updated_at":"2026-05-13 00:11:53"},"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["kernel/kprobes.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"8b6767e4141b2a42745b544d4555cf1614ba1a2d","status":"affected","version":"ae6aa16fdc163afe6b04b6c073ad4ddd4663c03b","versionType":"git"},{"lessThan":"b0ca81616a010807e91fc31db9be242b96326adc","status":"affected","version":"ae6aa16fdc163afe6b04b6c073ad4ddd4663c03b","versionType":"git"},{"lessThan":"cae928e3178c75602c21d67e21255d73e7e9ed4f","status":"affected","version":"ae6aa16fdc163afe6b04b6c073ad4ddd4663c03b","versionType":"git"},{"lessThan":"9edc79d664832a842012ad105b1521c1a3c35ab3","status":"affected","version":"ae6aa16fdc163afe6b04b6c073ad4ddd4663c03b","versionType":"git"},{"lessThan":"e113f0b46d19626ec15388bcb91432c9a4fd6261","status":"affected","version":"ae6aa16fdc163afe6b04b6c073ad4ddd4663c03b","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["kernel/kprobes.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"3.7"},{"lessThan":"3.7","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.130","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.78","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.19","versionType":"semver"},{"lessThanOrEqual":"6.19.*","status":"unaffected","version":"6.19.9","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.0","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.6.130","versionStartIncluding":"3.7","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.78","versionStartIncluding":"3.7","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.19","versionStartIncluding":"3.7","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.19.9","versionStartIncluding":"3.7","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.0","versionStartIncluding":"3.7","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nkprobes: avoid crash when rmmod/insmod after ftrace killed\n\nAfter we hit ftrace is killed by some errors, the kernel crash if\nwe remove modules in which kprobe probes.\n\nBUG: unable to handle page fault for address: fffffbfff805000d\nPGD 817fcc067 P4D 817fcc067 PUD 817fc8067 PMD 101555067 PTE 0\nOops: Oops: 0000 [#1] SMP KASAN PTI\nCPU: 4 UID: 0 PID: 2012 Comm: rmmod Tainted: G        W  OE\nTainted: [W]=WARN, [O]=OOT_MODULE, [E]=UNSIGNED_MODULE\nRIP: 0010:kprobes_module_callback+0x89/0x790\nRSP: 0018:ffff88812e157d30 EFLAGS: 00010a02\nRAX: 1ffffffff805000d RBX: dffffc0000000000 RCX: ffffffff86a8de90\nRDX: ffffed1025c2af9b RSI: 0000000000000008 RDI: ffffffffc0280068\nRBP: 0000000000000000 R08: 0000000000000001 R09: ffffed1025c2af9a\nR10: ffff88812e157cd7 R11: 205d323130325420 R12: 0000000000000002\nR13: ffffffffc0290488 R14: 0000000000000002 R15: ffffffffc0280040\nFS:  00007fbc450dd740(0000) GS:ffff888420331000(0000) knlGS:0000000000000000\nCS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\nCR2: fffffbfff805000d CR3: 000000010f624000 CR4: 00000000000006f0\nCall Trace:\n <TASK>\n notifier_call_chain+0xc6/0x280\n blocking_notifier_call_chain+0x60/0x90\n __do_sys_delete_module.constprop.0+0x32a/0x4e0\n do_syscall_64+0x5d/0xfa0\n entry_SYSCALL_64_after_hwframe+0x76/0x7e\n\nThis is because the kprobe on ftrace does not correctly handles\nthe kprobe_ftrace_disabled flag set by ftrace_kill().\n\nTo prevent this error, check kprobe_ftrace_disabled in\n__disarm_kprobe_ftrace() and skip all ftrace related operations."}],"providerMetadata":{"dateUpdated":"2026-05-11T22:24:01.453Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/8b6767e4141b2a42745b544d4555cf1614ba1a2d"},{"url":"https://git.kernel.org/stable/c/b0ca81616a010807e91fc31db9be242b96326adc"},{"url":"https://git.kernel.org/stable/c/cae928e3178c75602c21d67e21255d73e7e9ed4f"},{"url":"https://git.kernel.org/stable/c/9edc79d664832a842012ad105b1521c1a3c35ab3"},{"url":"https://git.kernel.org/stable/c/e113f0b46d19626ec15388bcb91432c9a4fd6261"}],"title":"kprobes: avoid crash when rmmod/insmod after ftrace killed","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-43409","datePublished":"2026-05-08T14:21:48.239Z","dateReserved":"2026-05-01T14:12:56.008Z","dateUpdated":"2026-05-11T22:24:01.453Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-05-08 15:16:52","lastModifiedDate":"2026-05-12 14:10:27","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"43409","Ordinal":"1","Title":"kprobes: avoid crash when rmmod/insmod after ftrace killed","CVE":"CVE-2026-43409","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"43409","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nkprobes: avoid crash when rmmod/insmod after ftrace killed\n\nAfter we hit ftrace is killed by some errors, the kernel crash if\nwe remove modules in which kprobe probes.\n\nBUG: unable to handle page fault for address: fffffbfff805000d\nPGD 817fcc067 P4D 817fcc067 PUD 817fc8067 PMD 101555067 PTE 0\nOops: Oops: 0000 [#1] SMP KASAN PTI\nCPU: 4 UID: 0 PID: 2012 Comm: rmmod Tainted: G        W  OE\nTainted: [W]=WARN, [O]=OOT_MODULE, [E]=UNSIGNED_MODULE\nRIP: 0010:kprobes_module_callback+0x89/0x790\nRSP: 0018:ffff88812e157d30 EFLAGS: 00010a02\nRAX: 1ffffffff805000d RBX: dffffc0000000000 RCX: ffffffff86a8de90\nRDX: ffffed1025c2af9b RSI: 0000000000000008 RDI: ffffffffc0280068\nRBP: 0000000000000000 R08: 0000000000000001 R09: ffffed1025c2af9a\nR10: ffff88812e157cd7 R11: 205d323130325420 R12: 0000000000000002\nR13: ffffffffc0290488 R14: 0000000000000002 R15: ffffffffc0280040\nFS:  00007fbc450dd740(0000) GS:ffff888420331000(0000) knlGS:0000000000000000\nCS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\nCR2: fffffbfff805000d CR3: 000000010f624000 CR4: 00000000000006f0\nCall Trace:\n <TASK>\n notifier_call_chain+0xc6/0x280\n blocking_notifier_call_chain+0x60/0x90\n __do_sys_delete_module.constprop.0+0x32a/0x4e0\n do_syscall_64+0x5d/0xfa0\n entry_SYSCALL_64_after_hwframe+0x76/0x7e\n\nThis is because the kprobe on ftrace does not correctly handles\nthe kprobe_ftrace_disabled flag set by ftrace_kill().\n\nTo prevent this error, check kprobe_ftrace_disabled in\n__disarm_kprobe_ftrace() and skip all ftrace related operations.","Type":"Description","Title":"kprobes: avoid crash when rmmod/insmod after ftrace killed"}]}}}