{"api_version":"1","generated_at":"2026-10-27T14:38:24+00:00","cve":"CVE-2023-54139","urls":{"html":"https://cve.report/CVE-2023-54139","api":"https://cve.report/api/cve/CVE-2023-54139.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2023-54139","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2023-54139"},"summary":{"title":"tracing/user_events: Ensure write index cannot be negative","description":"In the Linux kernel, the following vulnerability has been resolved:\n\ntracing/user_events: Ensure write index cannot be negative\n\nThe write index indicates which event the data is for and accesses a\nper-file array. The index is passed by user processes during write()\ncalls as the first 4 bytes. Ensure that it cannot be negative by\nreturning -EINVAL to prevent out of bounds accesses.\n\nUpdate ftrace self-test to ensure this occurs properly.","state":"PUBLISHED","assigner":"Linux","published_at":"2025-12-24 13:16:15","updated_at":"2026-08-04 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the Linux kernel, the following vulnerability has been resolved:\n\ntracing/user_events: Ensure write index cannot be negative\n\nThe write index indicates which event the data is for and accesses a\nper-file array. The index is passed by user processes during write()\ncalls as the first 4 bytes. Ensure that it cannot be negative by\nreturning -EINVAL to prevent out of bounds accesses.\n\nUpdate ftrace self-test to ensure this occurs properly."}],"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":"2026-08-04T09:17:58.688Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/0489c2b2c3104b89f078dbcec8c744dfc157d3e9"},{"url":"https://git.kernel.org/stable/c/4fe46b5adf18e3dc606e62c9e6a0413398a17572"},{"url":"https://git.kernel.org/stable/c/fa7f2f5d1739452280c22727c4384a52b72ab5de"},{"url":"https://git.kernel.org/stable/c/cd98c93286a30cc4588dfd02453bec63c2f4acf4"}],"title":"tracing/user_events: Ensure write index cannot be negative","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2023-54139","datePublished":"2025-12-24T13:06:54.094Z","dateReserved":"2025-12-24T13:02:52.522Z","dateUpdated":"2026-08-04T09:17:58.688Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2025-12-24 13:16:15","lastModifiedDate":"2026-08-04 10:19:31","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":"2023","CveId":"54139","Ordinal":"1","Title":"tracing/user_events: Ensure write index cannot be negative","CVE":"CVE-2023-54139","Year":"2023"},"notes":[{"CveYear":"2023","CveId":"54139","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\ntracing/user_events: Ensure write index cannot be negative\n\nThe write index indicates which event the data is for and accesses a\nper-file array. The index is passed by user processes during write()\ncalls as the first 4 bytes. Ensure that it cannot be negative by\nreturning -EINVAL to prevent out of bounds accesses.\n\nUpdate ftrace self-test to ensure this occurs properly.","Type":"Description","Title":"tracing/user_events: Ensure write index cannot be negative"}]}}}