CVE-2023-53589

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Doing a < comparison\nwould be sufficient, but the firmware should be doing\nit correctly, so check more strictly."}], "metrics": [{"cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "baseScore": 8.8, "baseSeverity": "HIGH"}, "scenarios": [{"lang": "en", "value": "AV:A - The vulnerable MCC update path is driven over the air \u2014 the firmware derives the MCC from 802.11d country IEs in received beacons and notifies the driver via MCC_CHUB_UPDATE_CMD, so an attacker within WiFi range selects the input that drives this code and, in the firmware-compromise case (a real over-the-air class for WiFi NICs), controls the malformed response itself. This matches the adjacent scoring used for equivalent unvalidated-WiFi-firmware-event bugs such as the brcmfmac IF event validation CVE.\nAC:L - Triggering is fully deterministic \u2014 a single n_channels field inconsistent with the packet length is enough, with no race to win, no memory-layout grooming, and no victim state dependency. The path executes automatically on every regulatory/MCC update.\nPR:N - No credentials or association are required; iwl_mvm_rx_chub_update_mcc() explicitly bails out when the interface is associated, so the vulnerable path runs precisely in the unauthenticated, pre-association state, and also runs unconditionally during driver init.\nUI:N - Regulatory/MCC updates are processed automatically on beacon reception and at interface bring-up with no user action whatsoever.\nS:U - The out-of-bounds read and write both occur in kernel memory within the same security authority; no VM, IOMMU, or sandbox boundary is crossed.\nC:H - n_channels is unbounded, so the copy reads arbitrarily far past the one-page FW response buffer into adjacent kernel memory, and the copied uninitialized data is turned into regulatory rules that any unprivileged user can read back via NL80211_CMD_GET_REG.\nI:H - resp_len is an int while n_channels * sizeof(__le32) is size_t, so n_channels around 0x40000000 truncates the allocation to a few bytes while the subsequent memcpy() length stays at ~4 GB, producing a heap out-of-bounds write that destroys large amounts of kernel memory.\nA:H - 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This matches the adjacent scoring used for equivalent unvalidated-WiFi-firmware-event bugs such as the brcmfmac IF event validation CVE.\nAC:L - Triggering is fully deterministic \u2014 a single n_channels field inconsistent with the packet length is enough, with no race to win, no memory-layout grooming, and no victim state dependency. 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Doing a < comparison\nwould be sufficient, but the firmware should be doing\nit correctly, so check more strictly."}], "id": "CVE-2023-53589", "lastModified": "2026-10-15T22:17:43.560", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "ADJACENT_NETWORK", "availabilityImpact": "HIGH", "baseScore": 8.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 5.9, "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "type": "Secondary"}, {"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"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2023-53589", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2026-10-15T21:35:44.946339Z", "version": "2.0.3"}}]}, "published": "2025-10-04T16:15:55.313", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/05ad5a4d421ce65652fcb24d46b7e273130240d6"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/557ba100d8cf3661ff8d71c0b4a2cba8db555ec2"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/682b6dc29d98e857e6ca4bbc077c7dc2899b7473"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/c176f03350954b795322de0bfe1d7b514db41f45"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/d0d39bed9e95f27a246be91c5929254ac043ed30"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/e519a404a5bbba37693cb10fa61794a5fce4fd9b"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "NVD-CWE-noinfo"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: wifi: iwlwifi: mvm: don't trust firmware n_channels", "id": "2401572", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2401572"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.0", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H", "status": "draft"}, "details": ["In the Linux kernel, the following vulnerability has been resolved:\nwifi: iwlwifi: mvm: don't trust firmware n_channels\nIf the firmware sends us a corrupted MCC response with\nn_channels much larger than the command response can be,\nwe might copy far too much (uninitialized) memory and\neven crash if the n_channels is large enough to make it\nrun out of the one page allocated for the FW response.\nFix that by checking the lengths. Doing a < comparison\nwould be sufficient, but the firmware should be doing\nit correctly, so check more strictly."], "name": "CVE-2023-53589", "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": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:rhivos:1", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat In-Vehicle Operating System 1"}], "public_date": "2025-10-04T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2023-53589\nhttps://nvd.nist.gov/vuln/detail/CVE-2023-53589\nhttps://lore.kernel.org/linux-cve-announce/2025100426-CVE-2023-53589-22f7@gregkh/T"], "threat_severity": "Important"}

{"created": "2025-10-06T14:41:02.294970+00:00", "updated": "2025-10-06T14:41:02.295048+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}