{"id":"CVE-2026-43010","state":"PUBLISHED","title":"bpf: Reject sleepable kprobe_multi programs at attach time","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Reject sleepable kprobe_multi programs at attach time\n\nkprobe.multi programs run in atomic/RCU context and cannot sleep.\nHowever, bpf_kprobe_multi_link_attach() did not validate whether the\nprogram being attached had the sleepable flag set, allowing sleepable\nhelpers such as bpf_copy_from_user() to be invoked from a non-sleepable\ncontext.\n\nThis causes a \"sleeping function called from invalid context\" splat:\n\n  BUG: sleeping function called from invalid context at ./include/linux/uaccess.h:169\n  in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 1787, name: sudo\n  preempt_count: 1, expected: 0\n  RCU nest depth: 2, expected: 0\n\nFix this by rejecting sleepable programs early in\nbpf_kprobe_multi_link_attach(), before any further processing.","publishedAt":"2026-05-01T14:15:16.947Z","updatedAt":"2026-10-30T12:24:44.728Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"0dcac272540613d41c05e89679e4ddb978b612f1","status":"affected","lessThan":"c2b5e13dee9cc83e664daf4c13077dcc618a44e9","versionType":"git"},{"version":"0dcac272540613d41c05e89679e4ddb978b612f1","status":"affected","lessThan":"89327ed787746a7aa4db3c97f91d2e294228932b","versionType":"git"},{"version":"0dcac272540613d41c05e89679e4ddb978b612f1","status":"affected","lessThan":"d97b19fe5265f7901b2c862f88a4eb1b129a0b61","versionType":"git"},{"version":"0dcac272540613d41c05e89679e4ddb978b612f1","status":"affected","lessThan":"dc9a060d76c12b23c5f378ee115d5e5d03d8bbf3","versionType":"git"},{"version":"0dcac272540613d41c05e89679e4ddb978b612f1","status":"affected","lessThan":"f952157e695fd434bdc05af63a703bb082a78717","versionType":"git"},{"version":"0dcac272540613d41c05e89679e4ddb978b612f1","status":"affected","lessThan":"eb7024bfcc5f68ed11ed9dd4891a3073c15f04a8","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["kernel/trace/bpf_trace.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.18","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.18","versionType":"semver"},{"version":"6.1.191","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.144","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.95","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.22","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"6.19.12","status":"unaffected","lessThanOrEqual":"6.19.*","versionType":"semver"},{"version":"7.0","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["kernel/trace/bpf_trace.c"]}],"references":["https://git.kernel.org/stable/c/c2b5e13dee9cc83e664daf4c13077dcc618a44e9","https://git.kernel.org/stable/c/89327ed787746a7aa4db3c97f91d2e294228932b","https://git.kernel.org/stable/c/d97b19fe5265f7901b2c862f88a4eb1b129a0b61","https://git.kernel.org/stable/c/dc9a060d76c12b23c5f378ee115d5e5d03d8bbf3","https://git.kernel.org/stable/c/f952157e695fd434bdc05af63a703bb082a78717","https://git.kernel.org/stable/c/eb7024bfcc5f68ed11ed9dd4891a3073c15f04a8"],"weaknesses":[],"ingestedAt":"2026-10-30T12:42:04.495Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/43xxx/CVE-2026-43010.json","commit":"db8103c5921aac81d5d90efcf3745980dafabf49","baselineCommit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-43010","state":"PUBLISHED","datePublished":"2026-05-01T14:15:16.947Z","dateUpdated":"2026-10-30T12:24:44.728Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-05-01T14:12:55.974Z"},"containers":{"cna":{"title":"bpf: Reject sleepable kprobe_multi programs at attach time","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Reject sleepable kprobe_multi programs at attach time\n\nkprobe.multi programs run in atomic/RCU context and cannot sleep.\nHowever, bpf_kprobe_multi_link_attach() did not validate whether the\nprogram being attached had the sleepable flag set, allowing sleepable\nhelpers such as bpf_copy_from_user() to be invoked from a non-sleepable\ncontext.\n\nThis causes a \"sleeping function called from invalid context\" splat:\n\n  BUG: sleeping function called from invalid context at ./include/linux/uaccess.h:169\n  in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 1787, name: sudo\n  preempt_count: 1, expected: 0\n  RCU nest depth: 2, expected: 0\n\nFix this by rejecting sleepable programs early in\nbpf_kprobe_multi_link_attach(), before any further processing."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"0dcac272540613d41c05e89679e4ddb978b612f1","status":"affected","lessThan":"c2b5e13dee9cc83e664daf4c13077dcc618a44e9","versionType":"git"},{"version":"0dcac272540613d41c05e89679e4ddb978b612f1","status":"affected","lessThan":"89327ed787746a7aa4db3c97f91d2e294228932b","versionType":"git"},{"version":"0dcac272540613d41c05e89679e4ddb978b612f1","status":"affected","lessThan":"d97b19fe5265f7901b2c862f88a4eb1b129a0b61","versionType":"git"},{"version":"0dcac272540613d41c05e89679e4ddb978b612f1","status":"affected","lessThan":"dc9a060d76c12b23c5f378ee115d5e5d03d8bbf3","versionType":"git"},{"version":"0dcac272540613d41c05e89679e4ddb978b612f1","status":"affected","lessThan":"f952157e695fd434bdc05af63a703bb082a78717","versionType":"git"},{"version":"0dcac272540613d41c05e89679e4ddb978b612f1","status":"affected","lessThan":"eb7024bfcc5f68ed11ed9dd4891a3073c15f04a8","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["kernel/trace/bpf_trace.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.18","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.18","versionType":"semver"},{"version":"6.1.191","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.144","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.95","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.22","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"6.19.12","status":"unaffected","lessThanOrEqual":"6.19.*","versionType":"semver"},{"version":"7.0","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["kernel/trace/bpf_trace.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/c2b5e13dee9cc83e664daf4c13077dcc618a44e9"},{"url":"https://git.kernel.org/stable/c/89327ed787746a7aa4db3c97f91d2e294228932b"},{"url":"https://git.kernel.org/stable/c/d97b19fe5265f7901b2c862f88a4eb1b129a0b61"},{"url":"https://git.kernel.org/stable/c/dc9a060d76c12b23c5f378ee115d5e5d03d8bbf3"},{"url":"https://git.kernel.org/stable/c/f952157e695fd434bdc05af63a703bb082a78717"},{"url":"https://git.kernel.org/stable/c/eb7024bfcc5f68ed11ed9dd4891a3073c15f04a8"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-10-30T12:24:44.728Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.18","versionEndExcluding":"6.1.191"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.18","versionEndExcluding":"6.6.144"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.18","versionEndExcluding":"6.12.95"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.18","versionEndExcluding":"6.18.22"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.18","versionEndExcluding":"6.19.12"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.18","versionEndExcluding":"7.0"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}