{"id":"CVE-2026-89515","title":"kernel: scsi: core: Fill in DMA padding bytes in scsi_alloc_sgtables() (CVE-2026-89515)","summary":"A flaw was found in the Linux kernel's SCSI core component. When processing data transfers using scatter-gather lists, the system does not properly initialize padding bytes for unaligned data elements. This can result in the exposure of un…","severity":"medium","cvss":5.5,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","cvssSource":"vendor","cwe":"CWE-824","vendor":"Red Hat","product":"Red Hat Enterprise Linux 9","affected":["enterprise_linux 10","enterprise_linux 6","enterprise_linux 7","enterprise_linux 8","enterprise_linux 9","openshift_container_platform 4"],"published":"2026-09-11","updated":"2026-09-14","sourceUpdated":"2026-09-14T18:38:10+00:00","source":"CSAF","sourceUrl":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-89515.json","references":[{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-89515.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-89515"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2532059"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-89515"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-89515"},{"url":"https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-89515.mbox"},{"url":"https://git.kernel.org/stable/c/1aa6df61cef1f47f503c3ccf60d08c4dd931fdc1"},{"url":"https://git.kernel.org/stable/c/6da140ebdfdd6aa3773945f2c0ebba01d2ef33d8"},{"url":"https://git.kernel.org/stable/c/fd2cbe08c6ccba7fc1ddb830653a93bb7e2d833c"},{"url":"https://git.kernel.org/stable/c/28ed5343666ff424ce5e248fa1c5a402303b4aff"},{"url":"https://git.kernel.org/stable/c/a4353ec7742bdf87dcdde5875270feb3a1982a51"},{"url":"https://git.kernel.org/stable/c/e7143c3f4e5c0a7986733c6f27009274bf6c4264"},{"url":"https://git.kernel.org/stable/c/6fd1cce5018fdcc8d928e00a6a1dd2997d5b9409"},{"url":"https://git.kernel.org/stable/c/626147717bea776b61ed3631d2c26283760c4cc4"}],"tags":["csaf","vex","red-hat","cve.org"],"epss":0.0022,"epssPercentile":0.11031,"ingestedAt":"2026-09-14T15:23:07.452Z","slug":"CVE-2026-89515","body":"## Overview\n\nA flaw was found in the Linux kernel's SCSI core component. When processing data transfers using scatter-gather lists, the system does not properly initialize padding bytes for unaligned data elements. This can result in the exposure of uninitialized memory, potentially allowing a local attacker to read sensitive information or cause a system crash (denial of service).\n\n## Vendor advisories\n\n- **Red Hat VEX** · Moderate · affected: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9, Red Hat OpenShift Container Platform 4 · no fix planned: Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 8, … · updated 2026-09-14 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-89515.json)\n\n**kernel: scsi: core: Fill in DMA padding bytes in scsi_alloc_sgtables()** — rated Moderate by Red Hat. Released 2026-09-11, updated 2026-09-14.\n\nAffected:\n\n- Red Hat Enterprise Linux 10\n- Red Hat Enterprise Linux 6\n- Red Hat Enterprise Linux 7\n- Red Hat Enterprise Linux 8\n- Red Hat Enterprise Linux 9\n- Red Hat OpenShift Container Platform 4\n\nNo fix planned:\n\n- Red Hat Enterprise Linux 6\n- Red Hat Enterprise Linux 10\n- Red Hat Enterprise Linux 7\n- Red Hat Enterprise Linux 8\n- Red Hat Enterprise Linux 9\n- Red Hat OpenShift Container Platform 4\n\n## Remediation\n\nOut of support scope","depth":"sunlit","depthScore":30,"depthScoreParts":{"impact":30.3,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[{"seq":204191,"id":"CVE-2026-89515","ts":1789490238880,"field":"cvss","old":null,"new":"5.5"},{"seq":204190,"id":"CVE-2026-89515","ts":1789490238880,"field":"severity","old":"none","new":"medium"},{"seq":147802,"id":"CVE-2026-89515","ts":1789270212347,"field":"cvss","old":null,"new":"6.3"},{"seq":147801,"id":"CVE-2026-89515","ts":1789270212347,"field":"severity","old":"none","new":"medium"},{"seq":109558,"id":"CVE-2026-89515","ts":1789183732408,"field":"cvss","old":null,"new":"6.3"},{"seq":109557,"id":"CVE-2026-89515","ts":1789183732408,"field":"severity","old":"none","new":"medium"}]}