{"api_version":"1","generated_at":"2026-04-09T09:19:58+00:00","cve":"CVE-2023-31436","urls":{"html":"https://cve.report/CVE-2023-31436","api":"https://cve.report/api/cve/CVE-2023-31436.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2023-31436","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2023-31436"},"summary":{"title":"CVE-2023-31436","description":"qfq_change_class in net/sched/sch_qfq.c in the Linux kernel before 6.2.13 allows an out-of-bounds write because lmax can exceed QFQ_MIN_LMAX.","state":"PUBLIC","assigner":"cve@mitre.org","published_at":"2023-04-28 02:15:00","updated_at":"2023-11-29 15:15:00"},"problem_types":["CWE-787"],"metrics":[],"references":[{"url":"http://packetstormsecurity.com/files/173087/Kernel-Live-Patch-Security-Notice-LSN-0095-1.html","name":"http://packetstormsecurity.com/files/173087/Kernel-Live-Patch-Security-Notice-LSN-0095-1.html","refsource":"MISC","tags":[],"title":"Kernel Live Patch Security Notice LSN-0095-1 ≈ Packet Storm","mime":"text/html","httpstatus":"200","archivestatus":"404"},{"url":"https://security.netapp.com/advisory/ntap-20230609-0001/","name":"https://security.netapp.com/advisory/ntap-20230609-0001/","refsource":"CONFIRM","tags":[],"title":"CVE-2023-31436 Linux Kernel Vulnerability in NetApp Products | NetApp Product Security","mime":"text/html","httpstatus":"200","archivestatus":"404"},{"url":"https://www.spinics.net/lists/stable-commits/msg294885.html","name":"https://www.spinics.net/lists/stable-commits/msg294885.html","refsource":"MISC","tags":[],"title":"Patch \"net: sched: sch_qfq: prevent slab-out-of-bounds in qfq_activate_agg\" has been added to the 6.2-stable tree — Linux Stable Commits","mime":"text/html","httpstatus":"200","archivestatus":"404"},{"url":"http://packetstormsecurity.com/files/173757/Kernel-Live-Patch-Security-Notice-LSN-0096-1.html","name":"http://packetstormsecurity.com/files/173757/Kernel-Live-Patch-Security-Notice-LSN-0096-1.html","refsource":"MISC","tags":[],"title":"Kernel Live Patch Security Notice LSN-0096-1 ≈ Packet Storm","mime":"text/html","httpstatus":"200","archivestatus":"404"},{"url":"https://github.com/torvalds/linux/commit/3037933448f60f9acb705997eae62013ecb81e0d","name":"https://github.com/torvalds/linux/commit/3037933448f60f9acb705997eae62013ecb81e0d","refsource":"MISC","tags":[],"title":"net: sched: sch_qfq: prevent slab-out-of-bounds in qfq_activate_agg · torvalds/linux@3037933 · GitHub","mime":"text/html","httpstatus":"200","archivestatus":"404"},{"url":"http://packetstormsecurity.com/files/175963/Kernel-Live-Patch-Security-Notice-LSN-0099-1.html","name":"http://packetstormsecurity.com/files/175963/Kernel-Live-Patch-Security-Notice-LSN-0099-1.html","refsource":"","tags":[],"title":"Kernel Live Patch Security Notice LSN-0099-1 ≈ Packet Storm","mime":"text/html","httpstatus":"200","archivestatus":"404"},{"url":"https://lists.debian.org/debian-lts-announce/2023/06/msg00008.html","name":"[debian-lts-announce] 20230605 [SECURITY] [DLA 3446-1] linux-5.10 security update","refsource":"MLIST","tags":[],"title":"[SECURITY] [DLA 3446-1] linux-5.10 security update","mime":"text/html","httpstatus":"200","archivestatus":"404"},{"url":"https://www.debian.org/security/2023/dsa-5402","name":"DSA-5402","refsource":"DEBIAN","tags":[],"title":"Debian -- Security Information -- DSA-5402-1 linux","mime":"text/html","httpstatus":"200","archivestatus":"404"},{"url":"https://cdn.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.2.13","name":"https://cdn.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.2.13","refsource":"MISC","tags":[],"title":"","mime":"text/plain","httpstatus":"200","archivestatus":"404"},{"url":"https://www.cve.org/CVERecord?id=CVE-2023-31436","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2023-31436","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[{"cve_year":"2023","cve_id":"31436","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"o","cpe4":"linux","cpe5":"linux_kernel","cpe6":"*","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"}],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[{"cve":"CVE-2023-31436","qid":"161147","title":"Oracle Enterprise Linux Security Update for kernel (ELSA-2023-7077)"},{"cve":"CVE-2023-31436","qid":"181781","title":"Debian Security Update for linux (DSA 5402-1)"},{"cve":"CVE-2023-31436","qid":"181828","title":"Debian Security Update for linux-5.10 (DLA 3446-1)"},{"cve":"CVE-2023-31436","qid":"183056","title":"Debian Security Update for linux (CVE-2023-31436)"},{"cve":"CVE-2023-31436","qid":"199382","title":"Ubuntu Security Notification for Linux kernel Vulnerabilities (USN-6127-1)"},{"cve":"CVE-2023-31436","qid":"199384","title":"Ubuntu Security Notification for Linux kernel Vulnerabilities (USN-6132-1)"},{"cve":"CVE-2023-31436","qid":"199386","title":"Ubuntu Security Notification for Linux kernel Vulnerabilities (USN-6131-1)"},{"cve":"CVE-2023-31436","qid":"199390","title":"Ubuntu Security Notification for Linux kernel (Azure CVM) Vulnerabilities (USN-6135-1)"},{"cve":"CVE-2023-31436","qid":"199406","title":"Ubuntu Security Notification for Linux kernel Vulnerabilities (USN-6150-1)"},{"cve":"CVE-2023-31436","qid":"199413","title":"Ubuntu Security Notification for Linux kernel (Intel IoTG) Vulnerabilities (USN-6162-1)"},{"cve":"CVE-2023-31436","qid":"199421","title":"Ubuntu Security Notification for Linux kernel (OEM) Vulnerabilities (USN-6173-1)"},{"cve":"CVE-2023-31436","qid":"199422","title":"Ubuntu Security Notification for Linux kernel Vulnerabilities (USN-6175-1)"},{"cve":"CVE-2023-31436","qid":"199437","title":"Ubuntu Security Notification for Linux kernel Vulnerabilities (USN-6186-1)"},{"cve":"CVE-2023-31436","qid":"199465","title":"Ubuntu Security Notification for Linux kernel (Xilinx ZynqMP) Vulnerabilities (USN-6222-1)"},{"cve":"CVE-2023-31436","qid":"199471","title":"Ubuntu Security Notification for Linux kernel Vulnerabilities (USN-6130-1)"},{"cve":"CVE-2023-31436","qid":"199539","title":"Ubuntu Security Notification for Linux kernel Vulnerabilities (USN-6149-1)"},{"cve":"CVE-2023-31436","qid":"199614","title":"Ubuntu Security Notification for Linux kernel (IoT) Vulnerabilities (USN-6256-1)"},{"cve":"CVE-2023-31436","qid":"199764","title":"Ubuntu Security Notification for Linux kernel (OEM) Vulnerabilities (USN-6385-1)"},{"cve":"CVE-2023-31436","qid":"199874","title":"Ubuntu Security Notification for Linux kernel Vulnerabilities (USN-6460-1)"},{"cve":"CVE-2023-31436","qid":"242434","title":"Red Hat Update for kernel-rt security (RHSA-2023:6901)"},{"cve":"CVE-2023-31436","qid":"242451","title":"Red Hat Update for kernel security (RHSA-2023:7077)"},{"cve":"CVE-2023-31436","qid":"242728","title":"Red Hat Update for kpatch-patch (RHSA-2024:0378)"},{"cve":"CVE-2023-31436","qid":"242769","title":"Red Hat Update for kpatch-patch (RHSA-2024:0554)"},{"cve":"CVE-2023-31436","qid":"242789","title":"Red Hat Update for kernel (RHSA-2024:0575)"},{"cve":"CVE-2023-31436","qid":"242855","title":"Red Hat Update for kernel (RHSA-2024:0412)"},{"cve":"CVE-2023-31436","qid":"243055","title":"Red Hat Update for kernel (RHSA-2024:1268)"},{"cve":"CVE-2023-31436","qid":"243057","title":"Red Hat Update for kpatch-patch (RHSA-2024:1278)"},{"cve":"CVE-2023-31436","qid":"243058","title":"Red Hat Update for kernel-rt (RHSA-2024:1269)"},{"cve":"CVE-2023-31436","qid":"243068","title":"Red Hat Update for kpatch-patch (RHSA-2024:1323)"},{"cve":"CVE-2023-31436","qid":"243076","title":"Red Hat Update for kernel (RHSA-2024:1367)"},{"cve":"CVE-2023-31436","qid":"243085","title":"Red Hat Update for kpatch-patch (RHSA-2024:1377)"},{"cve":"CVE-2023-31436","qid":"243096","title":"Red Hat Update for kernel-rt (RHSA-2024:1382)"},{"cve":"CVE-2023-31436","qid":"355083","title":"Amazon Linux Security Advisory for kernel : ALAS2KERNEL-5.10-2023-032"},{"cve":"CVE-2023-31436","qid":"355088","title":"Amazon Linux Security Advisory for kernel : ALAS2KERNEL-5.4-2023-045"},{"cve":"CVE-2023-31436","qid":"355100","title":"Amazon Linux Security Advisory for kernel : ALAS2-2023-2035"},{"cve":"CVE-2023-31436","qid":"355101","title":"Amazon Linux Security Advisory for kernel : ALAS2KERNEL-5.15-2023-018"},{"cve":"CVE-2023-31436","qid":"355103","title":"Amazon Linux Security Advisory for kernel : ALAS-2023-1744"},{"cve":"CVE-2023-31436","qid":"355237","title":"Amazon Linux Security Advisory for kernel : ALAS2023-2023-179"},{"cve":"CVE-2023-31436","qid":"378710","title":"Alibaba Cloud Linux Security Update for cloud-kernel (ALINUX3-SA-2023:0079)"},{"cve":"CVE-2023-31436","qid":"378889","title":"Alibaba Cloud Linux Security Update for cloud-kernel (ALINUX2-SA-2023:0036)"},{"cve":"CVE-2023-31436","qid":"379043","title":"Alibaba Cloud Linux Security Update for cloud-kernel (ALINUX3-SA-2023:0136)"},{"cve":"CVE-2023-31436","qid":"6140098","title":"AWS Bottlerocket Security Update for kernel (GHSA-fqrx-jw8q-x47m)"},{"cve":"CVE-2023-31436","qid":"673214","title":"EulerOS Security Update for kernel (EulerOS-SA-2023-2383)"},{"cve":"CVE-2023-31436","qid":"673232","title":"EulerOS Security Update for kernel (EulerOS-SA-2023-2357)"},{"cve":"CVE-2023-31436","qid":"673261","title":"EulerOS Security Update for kernel (EulerOS-SA-2023-2614)"},{"cve":"CVE-2023-31436","qid":"673272","title":"EulerOS Security Update for kernel (EulerOS-SA-2023-2584)"},{"cve":"CVE-2023-31436","qid":"673393","title":"EulerOS Security Update for kernel (EulerOS-SA-2023-2647)"},{"cve":"CVE-2023-31436","qid":"673498","title":"EulerOS Security Update for kernel (EulerOS-SA-2023-3132)"},{"cve":"CVE-2023-31436","qid":"674113","title":"EulerOS Security Update for kernel (EulerOS-SA-2023-2689)"},{"cve":"CVE-2023-31436","qid":"754097","title":"SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2023:2507-1)"},{"cve":"CVE-2023-31436","qid":"754105","title":"SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2023:2537-1)"},{"cve":"CVE-2023-31436","qid":"754106","title":"SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2023:2534-1)"},{"cve":"CVE-2023-31436","qid":"754110","title":"SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2023:2538-1)"},{"cve":"CVE-2023-31436","qid":"754120","title":"SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2023:2611-1)"},{"cve":"CVE-2023-31436","qid":"754145","title":"SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2023:2651-1)"},{"cve":"CVE-2023-31436","qid":"755851","title":"SUSE Enterprise Linux Security Update for the linux kernel (SUSE-SU-2023:2646-1)"},{"cve":"CVE-2023-31436","qid":"906892","title":"Common Base Linux Mariner (CBL-Mariner) Security Update for hyperv-daemons (26659-1)"},{"cve":"CVE-2023-31436","qid":"906909","title":"Common Base Linux Mariner (CBL-Mariner) Security Update for kernel (26391-1)"},{"cve":"CVE-2023-31436","qid":"906926","title":"Common Base Linux Mariner (CBL-Mariner) Security Update for hyperv-daemons (26668-1)"},{"cve":"CVE-2023-31436","qid":"906962","title":"Common Base Linux Mariner (CBL-Mariner) Security Update for kernel (26385-1)"},{"cve":"CVE-2023-31436","qid":"941453","title":"AlmaLinux Security Update for kernel (ALSA-2023:7077)"}]},"source_records":{"cve_program":{"CVE_data_meta":{"ASSIGNER":"cve@mitre.org","ID":"CVE-2023-31436","STATE":"PUBLIC"},"affects":{"vendor":{"vendor_data":[{"product":{"product_data":[{"product_name":"n/a","version":{"version_data":[{"version_value":"n/a"}]}}]},"vendor_name":"n/a"}]}},"data_format":"MITRE","data_type":"CVE","data_version":"4.0","description":{"description_data":[{"lang":"eng","value":"qfq_change_class in net/sched/sch_qfq.c in the Linux kernel before 6.2.13 allows an out-of-bounds write because lmax can exceed QFQ_MIN_LMAX."}]},"problemtype":{"problemtype_data":[{"description":[{"lang":"eng","value":"n/a"}]}]},"references":{"reference_data":[{"url":"https://github.com/torvalds/linux/commit/3037933448f60f9acb705997eae62013ecb81e0d","refsource":"MISC","name":"https://github.com/torvalds/linux/commit/3037933448f60f9acb705997eae62013ecb81e0d"},{"url":"https://www.spinics.net/lists/stable-commits/msg294885.html","refsource":"MISC","name":"https://www.spinics.net/lists/stable-commits/msg294885.html"},{"url":"https://cdn.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.2.13","refsource":"MISC","name":"https://cdn.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.2.13"},{"refsource":"DEBIAN","name":"DSA-5402","url":"https://www.debian.org/security/2023/dsa-5402"},{"refsource":"MLIST","name":"[debian-lts-announce] 20230605 [SECURITY] [DLA 3446-1] linux-5.10 security update","url":"https://lists.debian.org/debian-lts-announce/2023/06/msg00008.html"},{"refsource":"CONFIRM","name":"https://security.netapp.com/advisory/ntap-20230609-0001/","url":"https://security.netapp.com/advisory/ntap-20230609-0001/"},{"refsource":"MISC","name":"http://packetstormsecurity.com/files/173087/Kernel-Live-Patch-Security-Notice-LSN-0095-1.html","url":"http://packetstormsecurity.com/files/173087/Kernel-Live-Patch-Security-Notice-LSN-0095-1.html"},{"refsource":"MISC","name":"http://packetstormsecurity.com/files/173757/Kernel-Live-Patch-Security-Notice-LSN-0096-1.html","url":"http://packetstormsecurity.com/files/173757/Kernel-Live-Patch-Security-Notice-LSN-0096-1.html"}]}},"nvd":{"publishedDate":"2023-04-28 02:15:00","lastModifiedDate":"2023-11-29 15:15:00","problem_types":["CWE-787"],"metrics":{"baseMetricV3":{"cvssV3":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","attackVector":"LOCAL","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH","baseScore":7.8,"baseSeverity":"HIGH"},"exploitabilityScore":1.8,"impactScore":5.9}},"configurations":{"CVE_data_version":"4.0","nodes":[{"operator":"OR","children":[],"cpe_match":[{"vulnerable":true,"cpe23Uri":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.2","versionEndExcluding":"6.2.13","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.16","versionEndExcluding":"6.1.26","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.11","versionEndExcluding":"5.15.109","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.5.0","versionEndExcluding":"5.10.179","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.20","versionEndExcluding":"5.4.242","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.15","versionEndExcluding":"4.19.282","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.7","versionEndExcluding":"4.14.314","cpe_name":[]}]}]}},"legacy_mitre":{"record":null,"notes":[]}}}