CVE-2026-23309

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-23309", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-01-13T15:37:45.994Z", "datePublished": "2026-03-25T10:27:04.828Z", "dateUpdated": "2026-05-11T22:04:23.455Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-05-11T22:04:23.455Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ntracing: Add NULL pointer check to trigger_data_free()\n\nIf trigger_data_alloc() fails and returns NULL, event_hist_trigger_parse()\njumps to the out_free error path. While kfree() safely handles a NULL\npointer, trigger_data_free() does not. This causes a NULL pointer\ndereference in trigger_data_free() when evaluating\ndata->cmd_ops->set_filter.\n\nFix the problem by adding a NULL pointer check to trigger_data_free().\n\nThe problem was found by an experimental code review agent based on\ngemini-3.1-pro while reviewing backports into v6.18.y."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["kernel/trace/trace_events_trigger.c"], "versions": [{"version": "c10f0efe57728508d796ae4ba7abe4c14ec3d8ef", "lessThan": "13dcd9269e225e4c4ceabdaeebe2ce4661b54c6e", "status": "affected", "versionType": "git"}, {"version": "7e6556e9329bc484e9dcdab6e346d959267c0636", "lessThan": "59c15b9cc453b74beb9f04c6c398717e73612dc3", "status": "affected", "versionType": "git"}, {"version": "9b0513905e0598b9f8cfccab8e47497aed5d935d", "lessThan": "42b380f97d65e76e7b310facd525f730272daf57", "status": "affected", "versionType": "git"}, {"version": "335dfe4bc6368e70e8c15419375cf609c4f85558", "lessThan": "2ce8ece5a78da67834db7728edc801889a64f643", "status": "affected", "versionType": "git"}, {"version": "e42efbe9754da78eafe11f6bd3ca9c8a094a752a", "lessThan": "477469223b2b840f436ce204333de87cb17e5d93", "status": "affected", "versionType": "git"}, {"version": "0550069cc25f513ce1f109c88f7c1f01d63297db", "lessThan": "457965c13f0837a289c9164b842d0860133f6274", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["kernel/trace/trace_events_trigger.c"], "versions": [{"version": "6.1.165", "lessThan": "6.1.167", "status": "affected", "versionType": "semver"}, {"version": "6.6.128", "lessThan": "6.6.130", "status": "affected", "versionType": "semver"}, {"version": "6.12.75", "lessThan": "6.12.77", "status": "affected", "versionType": "semver"}, {"version": "6.18.14", "lessThan": "6.18.17", "status": "affected", "versionType": "semver"}, {"version": "6.19.4", "lessThan": "6.19.7", "status": "affected", "versionType": "semver"}]}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.1.165", "versionEndExcluding": "6.1.167"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.6.128", "versionEndExcluding": "6.6.130"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.12.75", "versionEndExcluding": "6.12.77"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.18.14", "versionEndExcluding": "6.18.17"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.19.4", "versionEndExcluding": "6.19.7"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/13dcd9269e225e4c4ceabdaeebe2ce4661b54c6e"}, {"url": "https://git.kernel.org/stable/c/59c15b9cc453b74beb9f04c6c398717e73612dc3"}, {"url": "https://git.kernel.org/stable/c/42b380f97d65e76e7b310facd525f730272daf57"}, {"url": "https://git.kernel.org/stable/c/2ce8ece5a78da67834db7728edc801889a64f643"}, {"url": "https://git.kernel.org/stable/c/477469223b2b840f436ce204333de87cb17e5d93"}, {"url": "https://git.kernel.org/stable/c/457965c13f0837a289c9164b842d0860133f6274"}], "title": "tracing: Add NULL pointer check to trigger_data_free()", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["kernel/trace/trace_events_trigger.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "13dcd9269e225e4c4ceabdaeebe2ce4661b54c6e", "status": "affected", "version": "c10f0efe57728508d796ae4ba7abe4c14ec3d8ef", "versionType": "git"}, {"lessThan": "59c15b9cc453b74beb9f04c6c398717e73612dc3", "status": "affected", "version": "7e6556e9329bc484e9dcdab6e346d959267c0636", "versionType": "git"}, {"lessThan": "42b380f97d65e76e7b310facd525f730272daf57", "status": "affected", "version": "9b0513905e0598b9f8cfccab8e47497aed5d935d", "versionType": "git"}, {"lessThan": "2ce8ece5a78da67834db7728edc801889a64f643", "status": "affected", "version": "335dfe4bc6368e70e8c15419375cf609c4f85558", "versionType": "git"}, {"lessThan": "477469223b2b840f436ce204333de87cb17e5d93", "status": "affected", "version": "e42efbe9754da78eafe11f6bd3ca9c8a094a752a", "versionType": "git"}, {"lessThan": "457965c13f0837a289c9164b842d0860133f6274", "status": "affected", "version": "0550069cc25f513ce1f109c88f7c1f01d63297db", "versionType": "git"}]}, {"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["kernel/trace/trace_events_trigger.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "6.1.167", "status": "affected", "version": "6.1.165", "versionType": "semver"}, {"lessThan": "6.6.130", "status": "affected", "version": "6.6.128", "versionType": "semver"}, {"lessThan": "6.12.77", "status": "affected", "version": "6.12.75", "versionType": "semver"}, {"lessThan": "6.18.17", "status": "affected", "version": "6.18.14", "versionType": "semver"}, {"lessThan": "6.19.7", "status": "affected", "version": "6.19.4", "versionType": "semver"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "D54E2FD5-7EF9-426A-9AE1-8E8DA970BCC8", "versionEndExcluding": "6.1.167", "versionStartIncluding": "6.1.165", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "2099D3D0-97C6-44C5-913D-E616B07A9237", "versionEndExcluding": "6.6.130", "versionStartIncluding": "6.6.128", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "84A22880-A425-402F-879A-9309659E3D36", "versionEndExcluding": "6.12.77", "versionStartIncluding": "6.12.75", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "4AEF99ED-2A46-4ECD-A9A4-D4D616C3DEE3", "versionEndExcluding": "6.18.17", "versionStartIncluding": "6.18.14", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "EABFC675-2A5E-4569-92F7-1E8942DA0683", "versionEndExcluding": "6.19.7", "versionStartIncluding": "6.19.4", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.0:rc1:*:*:*:*:*:*", "matchCriteriaId": "F253B622-8837-4245-BCE5-A7BF8FC76A16", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.0:rc2:*:*:*:*:*:*", "matchCriteriaId": "4AE85AD8-4641-4E7C-A2F4-305E2CD9EE64", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ntracing: Add NULL pointer check to trigger_data_free()\n\nIf trigger_data_alloc() fails and returns NULL, event_hist_trigger_parse()\njumps to the out_free error path. While kfree() safely handles a NULL\npointer, trigger_data_free() does not. This causes a NULL pointer\ndereference in trigger_data_free() when evaluating\ndata->cmd_ops->set_filter.\n\nFix the problem by adding a NULL pointer check to trigger_data_free().\n\nThe problem was found by an experimental code review agent based on\ngemini-3.1-pro while reviewing backports into v6.18.y."}, {"lang": "es", "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\ntracing: A\u00f1adir comprobaci\u00f3n de puntero NULL a trigger_data_free()\n\nSi trigger_data_alloc() falla y devuelve NULL, event_hist_trigger_parse() salta a la ruta de error out_free. Aunque kfree() maneja de forma segura un puntero NULL, trigger_data_free() no lo hace. Esto causa una desreferencia de puntero NULL en trigger_data_free() al evaluar data->cmd_ops->set_filter.\n\nCorregir el problema a\u00f1adiendo una comprobaci\u00f3n de puntero NULL a trigger_data_free().\n\nEl problema fue encontrado por un agente experimental de revisi\u00f3n de c\u00f3digo basado en gemini-3.1-pro mientras revisaba backports en v6.18.y."}], "id": "CVE-2026-23309", "lastModified": "2026-06-17T10:21:18.170", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 5.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2026-03-25T11:16:26.993", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/13dcd9269e225e4c4ceabdaeebe2ce4661b54c6e"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/2ce8ece5a78da67834db7728edc801889a64f643"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/42b380f97d65e76e7b310facd525f730272daf57"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/457965c13f0837a289c9164b842d0860133f6274"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/477469223b2b840f436ce204333de87cb17e5d93"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/59c15b9cc453b74beb9f04c6c398717e73612dc3"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-476"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: tracing: Add NULL pointer check to trigger_data_free()", "id": "2451230", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2451230"}, "csaw": false, "cwe": "CWE-476", "details": ["A flaw was found in the Linux kernel. When the 'trigger_data_alloc()' function fails to allocate memory and returns a null pointer, the subsequent 'trigger_data_free()' function attempts to access this null pointer. This null pointer dereference can lead to a system crash, resulting in a Denial of Service (DoS) for the affected system."], "name": "CVE-2026-23309", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2026-03-25T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-23309\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-23309\nhttps://lore.kernel.org/linux-cve-announce/2026032528-CVE-2026-23309-4243@gregkh/T"]}

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