CVE-2026-31689

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-31689", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-03-09T15:48:24.131Z", "datePublished": "2026-04-27T17:34:27.793Z", "dateUpdated": "2026-05-11T22:13:44.271Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-05-11T22:13:44.271Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nEDAC/mc: Fix error path ordering in edac_mc_alloc()\n\nWhen the mci->pvt_info allocation in edac_mc_alloc() fails, the error path\nwill call put_device() which will end up calling the device's release\nfunction.\n\nHowever, the init ordering is wrong such that device_initialize() happens\n*after* the failed allocation and thus the device itself and the release\nfunction pointer are not initialized yet when they're called:\n\n MCE: In-kernel MCE decoding enabled.\n ------------[ cut here ]------------\n kobject: '(null)': is not initialized, yet kobject_put() is being called.\n WARNING: lib/kobject.c:734 at kobject_put, CPU#22: systemd-udevd\n CPU: 22 UID: 0 PID: 538 Comm: systemd-udevd Not tainted 7.0.0-rc1+ #2 PREEMPT(full)\n RIP: 0010:kobject_put\n Call Trace:\n <TASK>\n edac_mc_alloc+0xbe/0xe0 [edac_core]\n amd64_edac_init+0x7a4/0xff0 [amd64_edac]\n ? __pfx_amd64_edac_init+0x10/0x10 [amd64_edac]\n do_one_initcall\n ...\n\nReorder the calling sequence so that the device is initialized and thus the\nrelease function pointer is properly set before it can be used.\n\nThis was found by Claude while reviewing another EDAC patch."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/edac/edac_mc.c"], "versions": [{"version": "0bbb265f7089584aaa6d440805ca75ea4f3930d4", "lessThan": "aae95970fad2127a1bd49d8713c7cd0677dcd2d6", "status": "affected", "versionType": "git"}, {"version": "0bbb265f7089584aaa6d440805ca75ea4f3930d4", "lessThan": "d3de72e2a2b9ee3a57734c1c068823e41a707715", "status": "affected", "versionType": "git"}, {"version": "0bbb265f7089584aaa6d440805ca75ea4f3930d4", "lessThan": "d20e98c2df9354cc744431ad8ccbf49405b8b40f", "status": "affected", "versionType": "git"}, {"version": "0bbb265f7089584aaa6d440805ca75ea4f3930d4", "lessThan": "87ce8ae511962e105bcb3534944208c6a9471ed9", "status": "affected", "versionType": "git"}, {"version": "0bbb265f7089584aaa6d440805ca75ea4f3930d4", "lessThan": "75825648ce984ca4cebb28e4bd2bf8c3a7e837c5", "status": "affected", "versionType": "git"}, {"version": "0bbb265f7089584aaa6d440805ca75ea4f3930d4", "lessThan": "51520e03e70d6c73e33ee7cbe0319767d05764fe", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/edac/edac_mc.c"], "versions": [{"version": "5.19", "status": "affected"}, {"version": "0", "lessThan": "5.19", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.169", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.135", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.82", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.23", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.19.13", "lessThanOrEqual": "6.19.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.0", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.19", "versionEndExcluding": "6.1.169"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.19", "versionEndExcluding": "6.6.135"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.19", "versionEndExcluding": "6.12.82"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.19", "versionEndExcluding": "6.18.23"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.19", "versionEndExcluding": "6.19.13"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.19", "versionEndExcluding": "7.0"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/aae95970fad2127a1bd49d8713c7cd0677dcd2d6"}, {"url": "https://git.kernel.org/stable/c/d3de72e2a2b9ee3a57734c1c068823e41a707715"}, {"url": "https://git.kernel.org/stable/c/d20e98c2df9354cc744431ad8ccbf49405b8b40f"}, {"url": "https://git.kernel.org/stable/c/87ce8ae511962e105bcb3534944208c6a9471ed9"}, {"url": "https://git.kernel.org/stable/c/75825648ce984ca4cebb28e4bd2bf8c3a7e837c5"}, {"url": "https://git.kernel.org/stable/c/51520e03e70d6c73e33ee7cbe0319767d05764fe"}], "title": "EDAC/mc: Fix error path ordering in edac_mc_alloc()", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/edac/edac_mc.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "aae95970fad2127a1bd49d8713c7cd0677dcd2d6", "status": "affected", "version": "0bbb265f7089584aaa6d440805ca75ea4f3930d4", "versionType": "git"}, {"lessThan": "d3de72e2a2b9ee3a57734c1c068823e41a707715", "status": "affected", "version": "0bbb265f7089584aaa6d440805ca75ea4f3930d4", "versionType": "git"}, {"lessThan": "d20e98c2df9354cc744431ad8ccbf49405b8b40f", "status": "affected", "version": "0bbb265f7089584aaa6d440805ca75ea4f3930d4", "versionType": "git"}, {"lessThan": "87ce8ae511962e105bcb3534944208c6a9471ed9", "status": "affected", "version": "0bbb265f7089584aaa6d440805ca75ea4f3930d4", "versionType": "git"}, {"lessThan": "75825648ce984ca4cebb28e4bd2bf8c3a7e837c5", "status": "affected", "version": "0bbb265f7089584aaa6d440805ca75ea4f3930d4", "versionType": "git"}, {"lessThan": "51520e03e70d6c73e33ee7cbe0319767d05764fe", "status": "affected", "version": "0bbb265f7089584aaa6d440805ca75ea4f3930d4", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/edac/edac_mc.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "5.19"}, {"lessThan": "5.19", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "6.1.*", "status": "unaffected", "version": "6.1.169", "versionType": "semver"}, {"lessThanOrEqual": "6.6.*", "status": "unaffected", "version": "6.6.135", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.82", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.23", "versionType": "semver"}, {"lessThanOrEqual": "6.19.*", "status": "unaffected", "version": "6.19.13", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "7.0", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "3AB249AE-837F-4928-AD92-D399D2D3E94A", "versionEndExcluding": "6.1.169", "versionStartIncluding": "5.19", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "15C1A1B2-14EE-494C-AF3E-D5A7BA640B39", "versionEndExcluding": "6.6.135", "versionStartIncluding": "6.2", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "02904CAE-71D2-45B3-9EC3-F6A9D18B6307", "versionEndExcluding": "6.12.82", "versionStartIncluding": "6.7", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "E9E09FDD-9EE3-4A56-92E2-2B30AFD0072F", "versionEndExcluding": "6.18.23", "versionStartIncluding": "6.13", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "1490EF9B-9080-481C-8D22-1306AAE664E4", "versionEndExcluding": "6.19.13", "versionStartIncluding": "6.19", "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}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.0:rc3:*:*:*:*:*:*", "matchCriteriaId": "F666C8D8-6538-46D4-B318-87610DE64C34", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.0:rc4:*:*:*:*:*:*", "matchCriteriaId": "02259FDA-961B-47BC-AE7F-93D7EC6E90C2", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.0:rc5:*:*:*:*:*:*", "matchCriteriaId": "58A9FEFF-C040-420D-8F0A-BFDAAA1DF258", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.0:rc6:*:*:*:*:*:*", "matchCriteriaId": "1D2315C0-D46F-4F85-9754-F9E5E11374A6", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.0:rc7:*:*:*:*:*:*", "matchCriteriaId": "512EE3A8-A590-4501-9A94-5D4B268D6138", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nEDAC/mc: Fix error path ordering in edac_mc_alloc()\n\nWhen the mci->pvt_info allocation in edac_mc_alloc() fails, the error path\nwill call put_device() which will end up calling the device's release\nfunction.\n\nHowever, the init ordering is wrong such that device_initialize() happens\n*after* the failed allocation and thus the device itself and the release\nfunction pointer are not initialized yet when they're called:\n\n MCE: In-kernel MCE decoding enabled.\n ------------[ cut here ]------------\n kobject: '(null)': is not initialized, yet kobject_put() is being called.\n WARNING: lib/kobject.c:734 at kobject_put, CPU#22: systemd-udevd\n CPU: 22 UID: 0 PID: 538 Comm: systemd-udevd Not tainted 7.0.0-rc1+ #2 PREEMPT(full)\n RIP: 0010:kobject_put\n Call Trace:\n <TASK>\n edac_mc_alloc+0xbe/0xe0 [edac_core]\n amd64_edac_init+0x7a4/0xff0 [amd64_edac]\n ? __pfx_amd64_edac_init+0x10/0x10 [amd64_edac]\n do_one_initcall\n ...\n\nReorder the calling sequence so that the device is initialized and thus the\nrelease function pointer is properly set before it can be used.\n\nThis was found by Claude while reviewing another EDAC patch."}, {"lang": "es", "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nEDAC/mc: Corregir el orden de la ruta de error en edac_mc_alloc()\n\nCuando la asignaci\u00f3n de mci -> pvt_info en edac_mc_alloc() falla, la ruta de error llamar\u00e1 a put_device(), lo que terminar\u00e1 llamando a la funci\u00f3n de liberaci\u00f3n del dispositivo.\n\nSin embargo, el orden de inicializaci\u00f3n es incorrecto, de tal manera que device_initialize() ocurre despu\u00e9s de la asignaci\u00f3n fallida y, por lo tanto, el dispositivo en s\u00ed y el puntero de la funci\u00f3n de liberaci\u00f3n no est\u00e1n inicializados a\u00fan cuando son llamados:\n\n MCE: In-kernel MCE decoding enabled.\n - - - - - - - - - - - -[ cut here ]- - - - - - - - - - - -\n kobject: \u2019(null)\u2019: is not initialized, yet kobject_put() is being called.\n WARNING: lib/kobject.c:734 at kobject_put, CPU#22: systemd-udevd\n CPU: 22 UID: 0 PID: 538 Comm: systemd-udevd Not tainted 7.0.0-rc1+ #2 PREEMPT(full)\n RIP: 0010:kobject_put\n Call Trace:\n [TASK]\n edac_mc_alloc+0xbe/0xe0 [edac_core]\n amd64_edac_init+0x7a4/0xff0 [amd64_edac]\n ? __pfx_amd64_edac_init+0x10/0x10 [amd64_edac]\n do_one_initcall\n ...\n\nReordenar la secuencia de llamadas para que el dispositivo sea inicializado y, por lo tanto, el puntero de la funci\u00f3n de liberaci\u00f3n est\u00e9 correctamente establecido antes de que pueda ser utilizado.\n\nEsto fue encontrado por Claude mientras revisaba otro parche EDAC."}], "id": "CVE-2026-31689", "lastModified": "2026-11-11T23:10:00.263", "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": "2026-04-27T18:16:54.387", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/51520e03e70d6c73e33ee7cbe0319767d05764fe"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/75825648ce984ca4cebb28e4bd2bf8c3a7e837c5"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/87ce8ae511962e105bcb3534944208c6a9471ed9"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/aae95970fad2127a1bd49d8713c7cd0677dcd2d6"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/d20e98c2df9354cc744431ad8ccbf49405b8b40f"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/d3de72e2a2b9ee3a57734c1c068823e41a707715"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-476"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: EDAC/mc: Fix error path ordering in edac_mc_alloc()", "id": "2463265", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2463265"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-824", "details": ["A flaw was found in the EDAC/mc module of the Linux kernel. An error in the ordering of operations within the `edac_mc_alloc` function can lead to a situation where a device's release function is called before the device is fully initialized. This improper initialization can result in a kernel warning and potential system instability, leading to a denial of service."], "name": "CVE-2026-31689", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Out of support scope", "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": "2026-04-27T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-31689\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-31689\nhttps://lore.kernel.org/linux-cve-announce/2026042757-CVE-2026-31689-9a00@gregkh/T"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[0bbb265f7089584aaa6d440805ca75ea4f3930d4,aae95970fad2127a1bd49d8713c7cd0677dcd2d6)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[0bbb265f7089584aaa6d440805ca75ea4f3930d4,d3de72e2a2b9ee3a57734c1c068823e41a707715)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[0bbb265f7089584aaa6d440805ca75ea4f3930d4,d20e98c2df9354cc744431ad8ccbf49405b8b40f)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[0bbb265f7089584aaa6d440805ca75ea4f3930d4,87ce8ae511962e105bcb3534944208c6a9471ed9)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[0bbb265f7089584aaa6d440805ca75ea4f3930d4,75825648ce984ca4cebb28e4bd2bf8c3a7e837c5)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[0bbb265f7089584aaa6d440805ca75ea4f3930d4,51520e03e70d6c73e33ee7cbe0319767d05764fe)"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "5.19"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[0,5.19)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.1.0,6.2.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.6.0,6.7.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.0,6.13.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.0,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.19.0,6.20.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.0.0,*]"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}], "created": "2026-04-28T04:30:20.926629+00:00", "updated": "2026-05-06T20:45:05.354201+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}