CVE-2024-36032

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"scenarios": [{"lang": "en", "value": "AV:A - The malformed build-info reply is supplied by the Bluetooth controller across the HCI/UART transport, so the attacker position is a rogue or over-the-air-compromised QCA BT SoC in Bluetooth radio range of the phone/embedded device \u2014 an adjacent-network attack surface, consistent with prior kernel-CNA scoring of HCI-transport-sourced data (CVE-2024-36968).\nAC:L - The controller deterministically chooses the event length and the length byte (e.g. a 3-byte reply with data[0]=254 for the slab overread, or data[0]=255 for the uninitialized-stack leak); there is no race, timing window, or memory-layout luck, and the path re-runs on every bring-up and subsystem restart.\nPR:N - qca_read_fw_build_info() runs unconditionally from hdev->setup during HCI device initialisation at boot/rfkill-unblock/SSR with no authentication and no host account required, and the resulting leak lands in a 0444-mode debugfs node rather than behind any credential check.\nUI:N - Bluetooth setup is performed automatically by the kernel when the HCI device is brought up; no victim action such as pairing, mounting, or opening a file is involved.\nS:U - Both the out-of-bounds reads and the disclosed data stay within the kernel's own memory and security authority, with no VM, IOMMU, or sandbox boundary crossed.\nC:H - This is an out-of-bounds read of up to ~254 bytes of adjacent slab memory past the skb buffer plus an unbounded kernel-stack overread (vsnprintf \"%s\" over a never-initialised 255-byte stack buffer), repeatable on every controller reset and exfiltrated through debugfs \u2014 far beyond a small bounded read, and sufficient to recover kernel pointers and defeat KASLR.\nI:N - The defect is purely a read overrun; the leaked bytes are written into a correctly sized kvasprintf allocation, so no kernel data outside the driver's own fw_info string is modified.\nA:H - The unbounded string walk off the end of the 255-byte stack buffer can run into the VMAP_STACK guard page, and the slab overread can hit a KFENCE-guarded page, producing an oops during Bluetooth initialisation \u2014 a panic on the panic_on_oops/panic_on_warn configurations common in Android, automotive, and embedded deployments."}]}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/bluetooth/btqca.c", "drivers/bluetooth/btqca.h"], "versions": [{"version": "c0187b0bd3e94c48050687d87b2c3c9fbae98ae9", "lessThan": "62d5550ab62042dcceaf18844d0feadbb962cffe", "status": "affected", "versionType": "git"}, {"version": "c0187b0bd3e94c48050687d87b2c3c9fbae98ae9", "lessThan": "57062aa13e87b1a78a4a8f6cb5fab6ba24f5f488", "status": "affected", "versionType": "git"}, {"version": "c0187b0bd3e94c48050687d87b2c3c9fbae98ae9", "lessThan": "6b63e0ef4d3ce0080395e5091fba2023f246c45a", "status": "affected", "versionType": "git"}, {"version": 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{"bugzilla": {"description": "kernel: Bluetooth: qca: fix info leak when fetching fw build id", "id": "2284408", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2284408"}, "csaw": false, "cvss3": {"cvss3_base_score": "2.3", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:N", "status": "draft"}, "cwe": "CWE-125", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nBluetooth: qca: fix info leak when fetching fw build id\nAdd the missing sanity checks and move the 255-byte build-id buffer off\nthe stack to avoid leaking stack data through debugfs in case the\nbuild-info reply is malformed."], "name": "CVE-2024-36032", "package_state": [{"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": "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": "2024-05-30T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2024-36032\nhttps://nvd.nist.gov/vuln/detail/CVE-2024-36032\nhttps://lore.kernel.org/linux-cve-announce/2024053000-CVE-2024-36032-1631@gregkh/T"], "threat_severity": "Low"}

{"created": "2025-07-12T22:23:18.318802+00:00", "updated": "2025-07-12T22:23:18.318902+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}