{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-98601", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-09-25T10:25:14.359Z", "datePublished": "2026-10-18T15:19:13.760Z", "dateUpdated": "2026-10-19T09:22:28.028Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-19T09:22:28.028Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: btintel_pcie: validate device-supplied DMA indices\n\nIn btintel_pcie_msix_rx_handle(), the driver processes RX completion\ndescriptors (urbd1) written by the PCIe device into DMA-coherent memory.\nurbd1->frbd_tag (a 16-bit field fully controlled by the device firmware\nvia DMA) is used directly as an array index into rxq->bufs[] without any\nbounds check. rxq->bufs[] has only BTINTEL_PCIE_RX_DESCS_COUNT (64)\nentries, while frbd_tag can be any value 0-65535. A malicious or\nmalfunctioning device can write an out-of-range frbd_tag, causing the\ndriver to dereference an out-of-bounds data_buf pointer.\n\nAdditionally, cr_hia is read from a DMA-shared index array also writable\nby the device; if the device sets cr_hia >= rxq->count, the while-loop\nnever terminates because cr_tia is wrapped via modulo rxq->count and can\nnever equal an out-of-range cr_hia.\n\nAdd bounds validation for cr_hia and frbd_tag in the RX path, and cr_hia\nin the TX path. Log invalid values with bt_dev_err before returning."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/bluetooth/btintel_pcie.c"], "versions": [{"version": "c2b636b3f788d10486a6691ad6dd3ec4c93bd78e", "lessThan": "f42cd95e679d5b78611cd2208cd1c41ad0045ffa", "status": "affected", "versionType": "git"}, {"version": "c2b636b3f788d10486a6691ad6dd3ec4c93bd78e", "lessThan": "8ec5838a35b03ac0cf3602452a369898051ffaf9", "status": "affected", "versionType": "git"}, {"version": "c2b636b3f788d10486a6691ad6dd3ec4c93bd78e", "lessThan": "b29b70bfa12133423924fcd0327c19a802f7e368", "status": "affected", "versionType": "git"}, {"version": "c2b636b3f788d10486a6691ad6dd3ec4c93bd78e", "lessThan": "37a11129345337efd6eef8e62b03b6348cd0dd8b", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/bluetooth/btintel_pcie.c"], "versions": [{"version": "6.10", "status": "affected"}, {"version": "0", "lessThan": "6.10", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.112", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.55", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.2.9", "lessThanOrEqual": "7.2.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.3", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.10", "versionEndExcluding": "6.12.112"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.10", "versionEndExcluding": "6.18.55"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.10", "versionEndExcluding": "7.2.9"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.10", "versionEndExcluding": "7.3"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/f42cd95e679d5b78611cd2208cd1c41ad0045ffa"}, {"url": "https://git.kernel.org/stable/c/8ec5838a35b03ac0cf3602452a369898051ffaf9"}, {"url": "https://git.kernel.org/stable/c/b29b70bfa12133423924fcd0327c19a802f7e368"}, {"url": "https://git.kernel.org/stable/c/37a11129345337efd6eef8e62b03b6348cd0dd8b"}], "title": "Bluetooth: btintel_pcie: validate device-supplied DMA indices", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/bluetooth/btintel_pcie.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "f42cd95e679d5b78611cd2208cd1c41ad0045ffa", "status": "affected", "version": "c2b636b3f788d10486a6691ad6dd3ec4c93bd78e", "versionType": "git"}, {"lessThan": "8ec5838a35b03ac0cf3602452a369898051ffaf9", "status": "affected", "version": "c2b636b3f788d10486a6691ad6dd3ec4c93bd78e", "versionType": "git"}, {"lessThan": "b29b70bfa12133423924fcd0327c19a802f7e368", "status": "affected", "version": "c2b636b3f788d10486a6691ad6dd3ec4c93bd78e", "versionType": "git"}, {"lessThan": "37a11129345337efd6eef8e62b03b6348cd0dd8b", "status": "affected", "version": "c2b636b3f788d10486a6691ad6dd3ec4c93bd78e", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/bluetooth/btintel_pcie.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "6.10"}, {"lessThan": "6.10", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.112", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.55", "versionType": "semver"}, {"lessThanOrEqual": "7.2.*", "status": "unaffected", "version": "7.2.9", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "7.3", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: btintel_pcie: validate device-supplied DMA indices\n\nIn btintel_pcie_msix_rx_handle(), the driver processes RX completion\ndescriptors (urbd1) written by the PCIe device into DMA-coherent memory.\nurbd1->frbd_tag (a 16-bit field fully controlled by the device firmware\nvia DMA) is used directly as an array index into rxq->bufs[] without any\nbounds check. rxq->bufs[] has only BTINTEL_PCIE_RX_DESCS_COUNT (64)\nentries, while frbd_tag can be any value 0-65535. A malicious or\nmalfunctioning device can write an out-of-range frbd_tag, causing the\ndriver to dereference an out-of-bounds data_buf pointer.\n\nAdditionally, cr_hia is read from a DMA-shared index array also writable\nby the device; if the device sets cr_hia >= rxq->count, the while-loop\nnever terminates because cr_tia is wrapped via modulo rxq->count and can\nnever equal an out-of-range cr_hia.\n\nAdd bounds validation for cr_hia and frbd_tag in the RX path, and cr_hia\nin the TX path. Log invalid values with bt_dev_err before returning."}], "id": "CVE-2026-98601", "lastModified": "2026-10-19T10:19:21.697", "metrics": {}, "published": "2026-10-18T16:17:12.817", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/37a11129345337efd6eef8e62b03b6348cd0dd8b"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/8ec5838a35b03ac0cf3602452a369898051ffaf9"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/b29b70bfa12133423924fcd0327c19a802f7e368"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/f42cd95e679d5b78611cd2208cd1c41ad0045ffa"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: Bluetooth: btintel_pcie: validate device-supplied DMA indices", "id": "2554920", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2554920"}, "csaw": false, "cvss3": {"cvss3_base_score": "6.2", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-125", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nBluetooth: btintel_pcie: validate device-supplied DMA indices\nIn btintel_pcie_msix_rx_handle(), the driver processes RX completion\ndescriptors (urbd1) written by the PCIe device into DMA-coherent memory.\nurbd1->frbd_tag (a 16-bit field fully controlled by the device firmware\nvia DMA) is used directly as an array index into rxq->bufs[] without any\nbounds check. rxq->bufs[] has only BTINTEL_PCIE_RX_DESCS_COUNT (64)\nentries, while frbd_tag can be any value 0-65535. A malicious or\nmalfunctioning device can write an out-of-range frbd_tag, causing the\ndriver to dereference an out-of-bounds data_buf pointer.\nAdditionally, cr_hia is read from a DMA-shared index array also writable\nby the device; if the device sets cr_hia >= rxq->count, the while-loop\nnever terminates because cr_tia is wrapped via modulo rxq->count and can\nnever equal an out-of-range cr_hia.\nAdd bounds validation for cr_hia and frbd_tag in the RX path, and cr_hia\nin the TX path. Log invalid values with bt_dev_err before returning.", "A flaw was found in the Linux kernel's Intel Bluetooth PCIe driver. The driver fails to validate index values provided by the hardware device through Direct Memory Access (DMA). A malicious or compromised PCIe device could supply out-of-range indices to trigger an out-of-bounds memory dereference or an infinite loop, resulting in a system crash and Denial of Service (DoS)."], "name": "CVE-2026-98601", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Fix deferred", "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": "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": "Fix deferred", "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"}, {"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Not affected", "package_name": "openshift/ose-rhel-coreos-8", "product_name": "Red Hat OpenShift Container Platform 4"}, {"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Fix deferred", "package_name": "openshift/ose-rhel-coreos-9", "product_name": "Red Hat OpenShift Container Platform 4"}], "public_date": "2026-10-18T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-98601\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-98601\nhttps://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-98601.mbox"], "threat_severity": "Moderate"}