{"api_version":"1","generated_at":"2026-08-09T17:52:40+00:00","cve":"CVE-2022-48871","urls":{"html":"https://cve.report/CVE-2022-48871","api":"https://cve.report/api/cve/CVE-2022-48871.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2022-48871","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2022-48871"},"summary":{"title":"tty: serial: qcom-geni-serial: fix slab-out-of-bounds on RX FIFO buffer","description":"In the Linux kernel, the following vulnerability has been resolved:\n\ntty: serial: qcom-geni-serial: fix slab-out-of-bounds on RX FIFO buffer\n\nDriver's probe allocates memory for RX FIFO (port->rx_fifo) based on\ndefault RX FIFO depth, e.g. 16.  Later during serial startup the\nqcom_geni_serial_port_setup() updates the RX FIFO depth\n(port->rx_fifo_depth) to match real device capabilities, e.g. to 32.\n\nThe RX UART handle code will read \"port->rx_fifo_depth\" number of words\ninto \"port->rx_fifo\" buffer, thus exceeding the bounds.  This can be\nobserved in certain configurations with Qualcomm Bluetooth HCI UART\ndevice and KASAN:\n\n  Bluetooth: hci0: QCA Product ID   :0x00000010\n  Bluetooth: hci0: QCA SOC Version  :0x400a0200\n  Bluetooth: hci0: QCA ROM Version  :0x00000200\n  Bluetooth: hci0: QCA Patch Version:0x00000d2b\n  Bluetooth: hci0: QCA controller version 0x02000200\n  Bluetooth: hci0: QCA Downloading qca/htbtfw20.tlv\n  bluetooth hci0: Direct firmware load for qca/htbtfw20.tlv failed with error -2\n  Bluetooth: hci0: QCA Failed to request file: qca/htbtfw20.tlv (-2)\n  Bluetooth: hci0: QCA Failed to download patch (-2)\n  ==================================================================\n  BUG: KASAN: slab-out-of-bounds in handle_rx_uart+0xa8/0x18c\n  Write of size 4 at addr ffff279347d578c0 by task swapper/0/0\n\n  CPU: 0 PID: 0 Comm: swapper/0 Not tainted 6.1.0-rt5-00350-gb2450b7e00be-dirty #26\n  Hardware name: Qualcomm Technologies, Inc. Robotics RB5 (DT)\n  Call trace:\n   dump_backtrace.part.0+0xe0/0xf0\n   show_stack+0x18/0x40\n   dump_stack_lvl+0x8c/0xb8\n   print_report+0x188/0x488\n   kasan_report+0xb4/0x100\n   __asan_store4+0x80/0xa4\n   handle_rx_uart+0xa8/0x18c\n   qcom_geni_serial_handle_rx+0x84/0x9c\n   qcom_geni_serial_isr+0x24c/0x760\n   __handle_irq_event_percpu+0x108/0x500\n   handle_irq_event+0x6c/0x110\n   handle_fasteoi_irq+0x138/0x2cc\n   generic_handle_domain_irq+0x48/0x64\n\nIf the RX FIFO depth changes after probe, be sure to resize the buffer.","state":"PUBLISHED","assigner":"Linux","published_at":"2024-08-21 07:15:04","updated_at":"2026-08-04 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Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2022-48871","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected f9d690b6ece7ec9a6ff6b588df95a010ab2d66f9 894681682dbefdad917b88f86cde1069140a047a git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected f9d690b6ece7ec9a6ff6b588df95a010ab2d66f9 cb53a3366eb28fed67850c80afa52075bb71a38a git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected f9d690b6ece7ec9a6ff6b588df95a010ab2d66f9 fd524ca7fe45b8a06dca2dd546d62684a9768f95 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected f9d690b6ece7ec9a6ff6b588df95a010ab2d66f9 b8caf69a6946e18ffebad49847e258f5b6d52ac2 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 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the Linux kernel, the following vulnerability has been resolved:\n\ntty: serial: qcom-geni-serial: fix slab-out-of-bounds on RX FIFO buffer\n\nDriver's probe allocates memory for RX FIFO (port->rx_fifo) based on\ndefault RX FIFO depth, e.g. 16.  Later during serial startup the\nqcom_geni_serial_port_setup() updates the RX FIFO depth\n(port->rx_fifo_depth) to match real device capabilities, e.g. to 32.\n\nThe RX UART handle code will read \"port->rx_fifo_depth\" number of words\ninto \"port->rx_fifo\" buffer, thus exceeding the bounds.  This can be\nobserved in certain configurations with Qualcomm Bluetooth HCI UART\ndevice and KASAN:\n\n  Bluetooth: hci0: QCA Product ID   :0x00000010\n  Bluetooth: hci0: QCA SOC Version  :0x400a0200\n  Bluetooth: hci0: QCA ROM Version  :0x00000200\n  Bluetooth: hci0: QCA Patch Version:0x00000d2b\n  Bluetooth: hci0: QCA controller version 0x02000200\n  Bluetooth: hci0: QCA Downloading qca/htbtfw20.tlv\n  bluetooth hci0: Direct firmware load for qca/htbtfw20.tlv failed with error -2\n  Bluetooth: hci0: QCA Failed to request file: qca/htbtfw20.tlv (-2)\n  Bluetooth: hci0: QCA Failed to download patch (-2)\n  ==================================================================\n  BUG: KASAN: slab-out-of-bounds in handle_rx_uart+0xa8/0x18c\n  Write of size 4 at addr ffff279347d578c0 by task swapper/0/0\n\n  CPU: 0 PID: 0 Comm: swapper/0 Not tainted 6.1.0-rt5-00350-gb2450b7e00be-dirty #26\n  Hardware name: Qualcomm Technologies, Inc. Robotics RB5 (DT)\n  Call trace:\n   dump_backtrace.part.0+0xe0/0xf0\n   show_stack+0x18/0x40\n   dump_stack_lvl+0x8c/0xb8\n   print_report+0x188/0x488\n   kasan_report+0xb4/0x100\n   __asan_store4+0x80/0xa4\n   handle_rx_uart+0xa8/0x18c\n   qcom_geni_serial_handle_rx+0x84/0x9c\n   qcom_geni_serial_isr+0x24c/0x760\n   __handle_irq_event_percpu+0x108/0x500\n   handle_irq_event+0x6c/0x110\n   handle_fasteoi_irq+0x138/0x2cc\n   generic_handle_domain_irq+0x48/0x64\n\nIf the RX FIFO depth changes after probe, be sure to resize the buffer."}],"metrics":[{"cvssV3_1":{"baseScore":8.8,"baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","version":"3.1"}}],"providerMetadata":{"dateUpdated":"2026-08-04T09:02:55.691Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/894681682dbefdad917b88f86cde1069140a047a"},{"url":"https://git.kernel.org/stable/c/cb53a3366eb28fed67850c80afa52075bb71a38a"},{"url":"https://git.kernel.org/stable/c/fd524ca7fe45b8a06dca2dd546d62684a9768f95"},{"url":"https://git.kernel.org/stable/c/b8caf69a6946e18ffebad49847e258f5b6d52ac2"}],"title":"tty: serial: qcom-geni-serial: fix slab-out-of-bounds on RX FIFO buffer","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2022-48871","datePublished":"2024-08-21T06:10:01.859Z","dateReserved":"2024-07-16T11:38:08.921Z","dateUpdated":"2026-08-04T09:02:55.691Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2024-08-21 07:15:04","lastModifiedDate":"2026-08-04 10:17:24","problem_types":["CWE-125"],"metrics":{"cvssMetricV31":[{"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","type":"Secondary","cvssData":{"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","attackVector":"ADJACENT_NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH"},"exploitabilityScore":2.8,"impactScore":5.9},{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H","baseScore":7.1,"baseSeverity":"HIGH","attackVector":"LOCAL","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"NONE","availabilityImpact":"HIGH"},"exploitabilityScore":1.8,"impactScore":5.2}],"ssvcV203":[{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","ssvcData":{"timestamp":"2024-09-10T16:05:28.910017Z","id":"CVE-2022-48871","options":[{"exploitation":"none"},{"automatable":"no"},{"technicalImpact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}]},"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.7","versionEndExcluding":"5.10.165","matchCriteriaId":"5D1B38E6-531E-4689-A204-9E0178E886F5"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.11","versionEndExcluding":"5.15.90","matchCriteriaId":"E995CDA5-7223-4FDB-BAD3-81B22C763A43"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.16","versionEndExcluding":"6.1.8","matchCriteriaId":"A6AFE6C9-3F59-4711-B2CF-7D6682FF6BD0"}]}]}]},"legacy_mitre":{"record":{"CveYear":"2022","CveId":"48871","Ordinal":"1","Title":"tty: serial: qcom-geni-serial: fix slab-out-of-bounds on RX FIFO","CVE":"CVE-2022-48871","Year":"2022"},"notes":[{"CveYear":"2022","CveId":"48871","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\ntty: serial: qcom-geni-serial: fix slab-out-of-bounds on RX FIFO buffer\n\nDriver's probe allocates memory for RX FIFO (port->rx_fifo) based on\ndefault RX FIFO depth, e.g. 16.  Later during serial startup the\nqcom_geni_serial_port_setup() updates the RX FIFO depth\n(port->rx_fifo_depth) to match real device capabilities, e.g. to 32.\n\nThe RX UART handle code will read \"port->rx_fifo_depth\" number of words\ninto \"port->rx_fifo\" buffer, thus exceeding the bounds.  This can be\nobserved in certain configurations with Qualcomm Bluetooth HCI UART\ndevice and KASAN:\n\n  Bluetooth: hci0: QCA Product ID   :0x00000010\n  Bluetooth: hci0: QCA SOC Version  :0x400a0200\n  Bluetooth: hci0: QCA ROM Version  :0x00000200\n  Bluetooth: hci0: QCA Patch Version:0x00000d2b\n  Bluetooth: hci0: QCA controller version 0x02000200\n  Bluetooth: hci0: QCA Downloading qca/htbtfw20.tlv\n  bluetooth hci0: Direct firmware load for qca/htbtfw20.tlv failed with error -2\n  Bluetooth: hci0: QCA Failed to request file: qca/htbtfw20.tlv (-2)\n  Bluetooth: hci0: QCA Failed to download patch (-2)\n  ==================================================================\n  BUG: KASAN: slab-out-of-bounds in handle_rx_uart+0xa8/0x18c\n  Write of size 4 at addr ffff279347d578c0 by task swapper/0/0\n\n  CPU: 0 PID: 0 Comm: swapper/0 Not tainted 6.1.0-rt5-00350-gb2450b7e00be-dirty #26\n  Hardware name: Qualcomm Technologies, Inc. Robotics RB5 (DT)\n  Call trace:\n   dump_backtrace.part.0+0xe0/0xf0\n   show_stack+0x18/0x40\n   dump_stack_lvl+0x8c/0xb8\n   print_report+0x188/0x488\n   kasan_report+0xb4/0x100\n   __asan_store4+0x80/0xa4\n   handle_rx_uart+0xa8/0x18c\n   qcom_geni_serial_handle_rx+0x84/0x9c\n   qcom_geni_serial_isr+0x24c/0x760\n   __handle_irq_event_percpu+0x108/0x500\n   handle_irq_event+0x6c/0x110\n   handle_fasteoi_irq+0x138/0x2cc\n   generic_handle_domain_irq+0x48/0x64\n\nIf the RX FIFO depth changes after probe, be sure to resize the buffer.","Type":"Description","Title":"tty: serial: qcom-geni-serial: fix slab-out-of-bounds on RX FIFO"}]}}}