{"api_version":"1","generated_at":"2026-06-20T16:22:07+00:00","cve":"CVE-2026-23271","urls":{"html":"https://cve.report/CVE-2026-23271","api":"https://cve.report/api/cve/CVE-2026-23271.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-23271","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-23271"},"summary":{"title":"perf: Fix __perf_event_overflow() vs perf_remove_from_context() race","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nperf: Fix __perf_event_overflow() vs perf_remove_from_context() race\n\nMake sure that __perf_event_overflow() runs with IRQs disabled for all\npossible callchains. Specifically the software events can end up running\nit with only preemption disabled.\n\nThis opens up a race vs perf_event_exit_event() and friends that will go\nand free various things the overflow path expects to be present, like\nthe BPF program.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-03-20 09:16:11","updated_at":"2026-04-02 15:16:28"},"problem_types":[],"metrics":[{"version":"3.1","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","type":"Secondary","score":"7.8","severity":"HIGH","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","data":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","baseScore":7.8,"baseSeverity":"HIGH","attackVector":"LOCAL","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH"}},{"version":"3.1","source":"CNA","type":"DECLARED","score":"7.8","severity":"HIGH","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","data":{"baseScore":7.8,"baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","version":"3.1"}}],"references":[{"url":"https://git.kernel.org/stable/c/4df1a45819e50993cb351682a6ae8e7ed2d233a0","name":"https://git.kernel.org/stable/c/4df1a45819e50993cb351682a6ae8e7ed2d233a0","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/c9bc1753b3cc41d0e01fbca7f035258b5f4db0ae","name":"https://git.kernel.org/stable/c/c9bc1753b3cc41d0e01fbca7f035258b5f4db0ae","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/bb190628fe5f2a73ba762a9972ba16c5e895f73e","name":"https://git.kernel.org/stable/c/bb190628fe5f2a73ba762a9972ba16c5e895f73e","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/4f8d5812337871227bb2c98669a87c306a2f86ef","name":"https://git.kernel.org/stable/c/4f8d5812337871227bb2c98669a87c306a2f86ef","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/3f89b61dd504c5b6711de9759e053b082f9abf12","name":"https://git.kernel.org/stable/c/3f89b61dd504c5b6711de9759e053b082f9abf12","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/5c48fdc4b4623533d86e279f51531a7ba212eb87","name":"https://git.kernel.org/stable/c/5c48fdc4b4623533d86e279f51531a7ba212eb87","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-23271","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-23271","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 592903cdcbf606a838056bae6d03fc557806c914 4df1a45819e50993cb351682a6ae8e7ed2d233a0 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 592903cdcbf606a838056bae6d03fc557806c914 4f8d5812337871227bb2c98669a87c306a2f86ef git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 592903cdcbf606a838056bae6d03fc557806c914 5c48fdc4b4623533d86e279f51531a7ba212eb87 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 592903cdcbf606a838056bae6d03fc557806c914 3f89b61dd504c5b6711de9759e053b082f9abf12 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 592903cdcbf606a838056bae6d03fc557806c914 bb190628fe5f2a73ba762a9972ba16c5e895f73e git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 592903cdcbf606a838056bae6d03fc557806c914 c9bc1753b3cc41d0e01fbca7f035258b5f4db0ae git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 2.6.31","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 2.6.31 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.1.167 6.1.* 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 6.12.77 6.12.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.17 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.19.7 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":"23271","cve":"CVE-2026-23271","epss":"0.000140000","percentile":"0.027400000","score_date":"2026-05-28","updated_at":"2026-05-29 00:13:16"},"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["kernel/events/core.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"4df1a45819e50993cb351682a6ae8e7ed2d233a0","status":"affected","version":"592903cdcbf606a838056bae6d03fc557806c914","versionType":"git"},{"lessThan":"4f8d5812337871227bb2c98669a87c306a2f86ef","status":"affected","version":"592903cdcbf606a838056bae6d03fc557806c914","versionType":"git"},{"lessThan":"5c48fdc4b4623533d86e279f51531a7ba212eb87","status":"affected","version":"592903cdcbf606a838056bae6d03fc557806c914","versionType":"git"},{"lessThan":"3f89b61dd504c5b6711de9759e053b082f9abf12","status":"affected","version":"592903cdcbf606a838056bae6d03fc557806c914","versionType":"git"},{"lessThan":"bb190628fe5f2a73ba762a9972ba16c5e895f73e","status":"affected","version":"592903cdcbf606a838056bae6d03fc557806c914","versionType":"git"},{"lessThan":"c9bc1753b3cc41d0e01fbca7f035258b5f4db0ae","status":"affected","version":"592903cdcbf606a838056bae6d03fc557806c914","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["kernel/events/core.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"2.6.31"},{"lessThan":"2.6.31","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.1.*","status":"unaffected","version":"6.1.167","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.130","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.77","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.17","versionType":"semver"},{"lessThanOrEqual":"6.19.*","status":"unaffected","version":"6.19.7","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":"6.1.167","versionStartIncluding":"2.6.31","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.6.130","versionStartIncluding":"2.6.31","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.77","versionStartIncluding":"2.6.31","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.17","versionStartIncluding":"2.6.31","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.19.7","versionStartIncluding":"2.6.31","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.0","versionStartIncluding":"2.6.31","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nperf: Fix __perf_event_overflow() vs perf_remove_from_context() race\n\nMake sure that __perf_event_overflow() runs with IRQs disabled for all\npossible callchains. Specifically the software events can end up running\nit with only preemption disabled.\n\nThis opens up a race vs perf_event_exit_event() and friends that will go\nand free various things the overflow path expects to be present, like\nthe BPF program."}],"metrics":[{"cvssV3_1":{"baseScore":7.8,"baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","version":"3.1"}}],"providerMetadata":{"dateUpdated":"2026-05-11T22:03:38.124Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/4df1a45819e50993cb351682a6ae8e7ed2d233a0"},{"url":"https://git.kernel.org/stable/c/4f8d5812337871227bb2c98669a87c306a2f86ef"},{"url":"https://git.kernel.org/stable/c/5c48fdc4b4623533d86e279f51531a7ba212eb87"},{"url":"https://git.kernel.org/stable/c/3f89b61dd504c5b6711de9759e053b082f9abf12"},{"url":"https://git.kernel.org/stable/c/bb190628fe5f2a73ba762a9972ba16c5e895f73e"},{"url":"https://git.kernel.org/stable/c/c9bc1753b3cc41d0e01fbca7f035258b5f4db0ae"}],"title":"perf: Fix __perf_event_overflow() vs perf_remove_from_context() race","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-23271","datePublished":"2026-03-20T08:08:46.711Z","dateReserved":"2026-01-13T15:37:45.991Z","dateUpdated":"2026-05-11T22:03:38.124Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-03-20 09:16:11","lastModifiedDate":"2026-04-02 15:16:28","problem_types":[],"metrics":{"cvssMetricV31":[{"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","baseScore":7.8,"baseSeverity":"HIGH","attackVector":"LOCAL","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH"},"exploitabilityScore":1.8,"impactScore":5.9}]},"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"23271","Ordinal":"1","Title":"perf: Fix __perf_event_overflow() vs perf_remove_from_context() ","CVE":"CVE-2026-23271","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"23271","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nperf: Fix __perf_event_overflow() vs perf_remove_from_context() race\n\nMake sure that __perf_event_overflow() runs with IRQs disabled for all\npossible callchains. Specifically the software events can end up running\nit with only preemption disabled.\n\nThis opens up a race vs perf_event_exit_event() and friends that will go\nand free various things the overflow path expects to be present, like\nthe BPF program.","Type":"Description","Title":"perf: Fix __perf_event_overflow() vs perf_remove_from_context() "}]}}}