# CVE-2026-43473: scsi: mpi3mr: Add NULL checks when resetting request and reply queues Status: published. Published: 2026-05-08. Updated: 2026-11-06. In the Linux kernel, the following vulnerability has been resolved: scsi: mpi3mr: Add NULL checks when resetting request and reply queues The driver encountered a crash during resource cleanup when the reply and request queues were NULL due to freed memory. This issue occurred when the creation of reply or request queues failed, and the driver freed the memory first, but attempted to mem set the content of the freed memory, leading to a system crash. Add NULL pointer checks for reply and request queues before accessing the reply/request memory during cleanup ## Remediation - fix: The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches. (source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67) — https://git.kernel.org/stable/c/220d7ca70611a73d50ef8e9edac630ed1ececb7c - fix: The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches. (source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67) — https://git.kernel.org/stable/c/78d3f201f8b609928eade53cf03a52df5415aaf7 - fix: The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches. (source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67) — https://git.kernel.org/stable/c/7da755e0d02e9ca035065127e108d1fed8950dc8 - fix: The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches. (source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67) — https://git.kernel.org/stable/c/7df0296ad4e9253d12c6dbe7f120044dddc95600 - fix: The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches. (source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67) — https://git.kernel.org/stable/c/e978a36f332ede78eb4de037b517db16265d420d - fix: The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches. (source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67) — https://git.kernel.org/stable/c/fa96392ebebc8fade2b878acb14cce0f71016503 ## Affected products and versions - Linux / Linux: ≥ fe6db615156573d3f6a37564b8a590cb03bbaf25; < 7df0296ad4e9253d12c6dbe7f120044dddc95600 (affected, git); ≥ fe6db615156573d3f6a37564b8a590cb03bbaf25; < 7da755e0d02e9ca035065127e108d1fed8950dc8 (affected, git); ≥ fe6db615156573d3f6a37564b8a590cb03bbaf25; < 78d3f201f8b609928eade53cf03a52df5415aaf7 (affected, git); ≥ fe6db615156573d3f6a37564b8a590cb03bbaf25; < e978a36f332ede78eb4de037b517db16265d420d (affected, git); ≥ fe6db615156573d3f6a37564b8a590cb03bbaf25; < 220d7ca70611a73d50ef8e9edac630ed1ececb7c (affected, git); ≥ fe6db615156573d3f6a37564b8a590cb03bbaf25; < fa96392ebebc8fade2b878acb14cce0f71016503 (affected, git). Source: CNA: Linux - Linux / Linux: 5.17 (affected); ≥ 0; < 5.17 (unaffected, semver); ≥ 6.1.167; ≤ 6.1.* (unaffected, semver); ≥ 6.6.130; ≤ 6.6.* (unaffected, semver); ≥ 6.12.78; ≤ 6.12.* (unaffected, semver); ≥ 6.18.19; ≤ 6.18.* (unaffected, semver); ≥ 6.19.9; ≤ 6.19.* (unaffected, semver); ≥ 7.0; ≤ * (unaffected, original_commit_for_fix). Source: CNA: Linux ## NVD configuration conditions Affected CPE matches depend on the following AND/OR and negation conditions: ```json [ { "negate": false, "nodes": [ { "cpeMatch": [ { "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionEndExcluding": "6.1.167", "versionStartIncluding": "5.17", "vulnerable": true }, { "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionEndExcluding": "6.6.130", "versionStartIncluding": "6.2", "vulnerable": true }, { "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionEndExcluding": "6.12.78", "versionStartIncluding": "6.7", "vulnerable": true }, { "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionEndExcluding": "6.18.19", "versionStartIncluding": "6.13", "vulnerable": true }, { "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionEndExcluding": "6.19.9", "versionStartIncluding": "6.19", "vulnerable": true }, { "criteria": "cpe:2.3:o:linux:linux_kernel:7.0:rc1:*:*:*:*:*:*", "vulnerable": true } ], "negate": false, "operator": "OR" } ], "operator": "OR" } ] ``` ## Severity and prioritization - CVSS 3.1: 5.5 (medium); CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H; source: NVD: nvd@nist.gov - CISA KEV: No listing in collected sources - EPSS: 0.11% as of 2026-11-06; percentile 1.50% - SSVC: exploitation none; automatable no; technical impact partial; source ADP: CISA-ADP - Weaknesses: CWE-476 ## Exploit evidence No exploit evidence in collected sources. This is not proof of no exploitation. ## References - https://git.kernel.org/stable/c/7df0296ad4e9253d12c6dbe7f120044dddc95600 (CNA: Linux) - https://git.kernel.org/stable/c/7da755e0d02e9ca035065127e108d1fed8950dc8 (CNA: Linux) - https://git.kernel.org/stable/c/78d3f201f8b609928eade53cf03a52df5415aaf7 (CNA: Linux) - https://git.kernel.org/stable/c/e978a36f332ede78eb4de037b517db16265d420d (CNA: Linux) - https://git.kernel.org/stable/c/220d7ca70611a73d50ef8e9edac630ed1ececb7c (CNA: Linux) - https://git.kernel.org/stable/c/fa96392ebebc8fade2b878acb14cce0f71016503 (CNA: Linux) - https://git.kernel.org/stable/c/220d7ca70611a73d50ef8e9edac630ed1ececb7c (416baaa9-dc9f-4396-8d5f-8c081fb06d67; Patch) - https://git.kernel.org/stable/c/78d3f201f8b609928eade53cf03a52df5415aaf7 (416baaa9-dc9f-4396-8d5f-8c081fb06d67; Patch) - https://git.kernel.org/stable/c/7da755e0d02e9ca035065127e108d1fed8950dc8 (416baaa9-dc9f-4396-8d5f-8c081fb06d67; Patch) - https://git.kernel.org/stable/c/7df0296ad4e9253d12c6dbe7f120044dddc95600 (416baaa9-dc9f-4396-8d5f-8c081fb06d67; Patch) - https://git.kernel.org/stable/c/e978a36f332ede78eb4de037b517db16265d420d (416baaa9-dc9f-4396-8d5f-8c081fb06d67; Patch) - https://git.kernel.org/stable/c/fa96392ebebc8fade2b878acb14cce0f71016503 (416baaa9-dc9f-4396-8d5f-8c081fb06d67; Patch) ## Provenance - CNA: Linux: https://www.cve.org/CVERecord?id=CVE-2026-43473; retrieved 2026-11-06; source updated 2026-11-06 - NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-43473; retrieved 2026-11-06; source updated 2026-11-06 - FIRST EPSS: https://api.first.org/data/v1/epss?cve=CVE-2026-43473; retrieved 2026-11-06; source updated Not reported Revision: 24d75395520255bd3667c6b03d04b6520e484e5262d3d981e63df6308a7176a7 Canonical: https://y2.dev/cve/CVE-2026-43473 ## Agent and API access Public CVE pages, Markdown, and JSON are free to read without an account or API key. - Public catalog: https://y2.dev/cve/index.json. 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