CVE-2026-99094

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-99094", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-09-25T10:25:14.390Z", "datePublished": "2026-10-26T14:52:02.053Z", "dateUpdated": "2026-10-31T12:42:42.980Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-31T12:42:42.980Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: btintel_pcie: fix TX descriptor bounds check\n\nbtintel_pcie_prepare_tx() uses tfd_index to access the TFD and data\nbuffer arrays before the index is advanced modulo txq->count. An index\nequal to txq->count is one past the end of both arrays, so reject it in\nthe bounds check."}], "metrics": [{"cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H", "baseScore": 7.5, "baseSeverity": "HIGH"}, "scenarios": [{"lang": "en", "value": "AV:A - An adjacent BR/EDR peer's L2CAP Echo Request enters via btintel_pcie_msix_rx_handle() and l2cap_bredr_sig_cmd(), which echoes peer bytes through hci_send_frame() -> btintel_pcie_send_frame() -> patched btintel_pcie_send_sync(). Bluetooth radio range makes this AV:A.\nAC:H - The peer cannot create tfd_index==32: btintel_pcie_alloc() zeroes tr_hia, the ordered HCI workqueue serializes sends, btintel_pcie_send_sync() advances it modulo txq->count, and resets only zero it. Reaching 32 therefore needs corruption or a fault outside attacker control.\nPR:N - l2cap_bredr_sig_cmd() handles L2CAP_ECHO_REQ by directly queuing L2CAP_ECHO_RSP; that branch has no pairing, authentication, or capability gate, so the adjacent peer needs no target privileges.\nUI:N - No user action occurs in this path; after the bad head-index state exists, receipt of L2CAP_ECHO_REQ automatically builds and transmits the response into btintel_pcie_send_sync().\nS:U - btintel_pcie_prepare_tx() corrupts the host kernel's TX descriptors or memory reached through the post-array data pointer; it does not cross a VM, IOMMU, or other security authority.\nC:H - At index 32, btintel_pcie_prepare_tx() reads bufs[32].data beyond the heap array and writes peer-controlled Echo Response bytes through that pointer; this kernel memory corruption can enable control-flow hijack and disclosure.\nI:H - btintel_pcie_prepare_tx() zeroes and fills tfds[32] past the 32-entry descriptor array, then memcpy() writes through the out-of-bounds bufs[32].data pointer, providing exploitable kernel-memory modification.\nA:H - The invalid bufs[32].data pointer can fault the kernel in memcpy(), while the tfds[32] write corrupts the adjacent URBD0 completion-descriptor area and can stop the Bluetooth transport."}]}], "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": "6e65a09f927566f257322358d429b267548473eb", "lessThan": "08704ec6d4bf69725e7815b09a9b5c7af83e255b", "status": "affected", "versionType": "git"}, {"version": "6e65a09f927566f257322358d429b267548473eb", "lessThan": "39ab048cce70d50af48015f5f294c4cf80d6ba89", "status": "affected", "versionType": "git"}, {"version": "6e65a09f927566f257322358d429b267548473eb", "lessThan": "2669567615215d52fb306053cbcc1f53dc386158", "status": "affected", "versionType": "git"}, {"version": "6e65a09f927566f257322358d429b267548473eb", "lessThan": "baa53af641c9e3644e717b8dfd1b95a55a0c111b", "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": "6.12.113", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.57", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.2.11", "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": "6.12.113"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.10", "versionEndExcluding": "6.18.57"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.10", "versionEndExcluding": "7.2.11"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.10", "versionEndExcluding": "7.3"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/08704ec6d4bf69725e7815b09a9b5c7af83e255b"}, {"url": "https://git.kernel.org/stable/c/39ab048cce70d50af48015f5f294c4cf80d6ba89"}, {"url": "https://git.kernel.org/stable/c/2669567615215d52fb306053cbcc1f53dc386158"}, {"url": "https://git.kernel.org/stable/c/baa53af641c9e3644e717b8dfd1b95a55a0c111b"}], "title": "Bluetooth: btintel_pcie: fix TX descriptor bounds check", "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": "08704ec6d4bf69725e7815b09a9b5c7af83e255b", "status": "affected", "version": "6e65a09f927566f257322358d429b267548473eb", "versionType": "git"}, {"lessThan": "39ab048cce70d50af48015f5f294c4cf80d6ba89", "status": "affected", "version": "6e65a09f927566f257322358d429b267548473eb", "versionType": "git"}, {"lessThan": "2669567615215d52fb306053cbcc1f53dc386158", "status": "affected", "version": "6e65a09f927566f257322358d429b267548473eb", "versionType": "git"}, {"lessThan": "baa53af641c9e3644e717b8dfd1b95a55a0c111b", "status": "affected", "version": "6e65a09f927566f257322358d429b267548473eb", "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": "6.12.113", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.57", "versionType": "semver"}, {"lessThanOrEqual": "7.2.*", "status": "unaffected", "version": "7.2.11", "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: fix TX descriptor bounds check\n\nbtintel_pcie_prepare_tx() uses tfd_index to access the TFD and data\nbuffer arrays before the index is advanced modulo txq->count. An index\nequal to txq->count is one past the end of both arrays, so reject it in\nthe bounds check."}], "id": "CVE-2026-99094", "lastModified": "2026-10-31T13:17:54.273", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "ADJACENT_NETWORK", "availabilityImpact": "HIGH", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 1.6, "impactScore": 5.9, "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "type": "Secondary"}]}, "published": "2026-10-26T15:16:48.380", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/08704ec6d4bf69725e7815b09a9b5c7af83e255b"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/2669567615215d52fb306053cbcc1f53dc386158"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/39ab048cce70d50af48015f5f294c4cf80d6ba89"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/baa53af641c9e3644e717b8dfd1b95a55a0c111b"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: Bluetooth: btintel_pcie: fix TX descriptor bounds check", "id": "2560852", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2560852"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-193", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nBluetooth: btintel_pcie: fix TX descriptor bounds check\nbtintel_pcie_prepare_tx() uses tfd_index to access the TFD and data\nbuffer arrays before the index is advanced modulo txq->count. An index\nequal to txq->count is one past the end of both arrays, so reject it in\nthe bounds check.", "A flaw was found in the Linux kernel's Intel Bluetooth PCIe driver. An off-by-one bounds check fails to properly validate the transmission descriptor index against the queue limit during packet preparation. A local attacker could exploit this issue to trigger an out-of-bounds memory access, leading to memory corruption and a Denial of Service (DoS) via a system crash."], "name": "CVE-2026-99094", "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": "2026-10-26T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-99094\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-99094\nhttps://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-99094.mbox"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[6e65a09f927566f257322358d429b267548473eb,08704ec6d4bf69725e7815b09a9b5c7af83e255b)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[6e65a09f927566f257322358d429b267548473eb,39ab048cce70d50af48015f5f294c4cf80d6ba89)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[6e65a09f927566f257322358d429b267548473eb,2669567615215d52fb306053cbcc1f53dc386158)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[6e65a09f927566f257322358d429b267548473eb,baa53af641c9e3644e717b8dfd1b95a55a0c111b)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux", "vendor": "linux"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "6.10"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[0,6.10)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.113,6.13.0]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.57,6.19.0]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.2.11,7.3.0]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.3,*]"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux", "vendor": "linux"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[6e65a09f927566f257322358d429b267548473eb,08704ec6d4bf69725e7815b09a9b5c7af83e255b)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[6e65a09f927566f257322358d429b267548473eb,39ab048cce70d50af48015f5f294c4cf80d6ba89)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[6e65a09f927566f257322358d429b267548473eb,2669567615215d52fb306053cbcc1f53dc386158)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[6e65a09f927566f257322358d429b267548473eb,baa53af641c9e3644e717b8dfd1b95a55a0c111b)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "6.10"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[0,6.10)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.113,6.13.0]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.57,6.19.0]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.2.11,7.3.0]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.3,*]"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}], "created": "2026-10-26T17:15:06.998138+00:00", "updated": "2026-10-31T13:30:13.678198+00:00", "vendors": ["linux", "linux$PRODUCT$linux", "linux$PRODUCT$linux_kernel"]}