{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2022-48871", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-07-16T11:38:08.921Z", "datePublished": "2024-08-21T06:10:01.859Z", "dateUpdated": "2026-05-11T18:48:46.456Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-05-11T18:48:46.456Z" }, "descriptions": [ { "lang": "en", "value": "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." } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/tty/serial/qcom_geni_serial.c" ], "versions": [ { "version": "f9d690b6ece7ec9a6ff6b588df95a010ab2d66f9", "lessThan": "894681682dbefdad917b88f86cde1069140a047a", "status": "affected", "versionType": "git" }, { "version": "f9d690b6ece7ec9a6ff6b588df95a010ab2d66f9", "lessThan": "cb53a3366eb28fed67850c80afa52075bb71a38a", "status": "affected", "versionType": "git" }, { "version": "f9d690b6ece7ec9a6ff6b588df95a010ab2d66f9", "lessThan": "fd524ca7fe45b8a06dca2dd546d62684a9768f95", "status": "affected", "versionType": "git" }, { "version": "f9d690b6ece7ec9a6ff6b588df95a010ab2d66f9", "lessThan": "b8caf69a6946e18ffebad49847e258f5b6d52ac2", "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/tty/serial/qcom_geni_serial.c" ], "versions": [ { "version": "5.7", "status": "affected" }, { "version": "0", "lessThan": "5.7", "status": "unaffected", "versionType": "semver" }, { "version": "5.10.165", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.15.90", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.1.8", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.2", "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": "5.7", "versionEndExcluding": "5.10.165" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.7", "versionEndExcluding": "5.15.90" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.7", "versionEndExcluding": "6.1.8" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.7", "versionEndExcluding": "6.2" } ] } ] } ], "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" } }, "adp": [ { "metrics": [ { "other": { "type": "ssvc", "content": { "id": "CVE-2022-48871", "role": "CISA Coordinator", "options": [ { "Exploitation": "none" }, { "Automatable": "no" }, { "Technical Impact": "partial" } ], "version": "2.0.3", "timestamp": "2024-09-10T16:05:28.910017Z" } } } ], "title": "CISA ADP Vulnrichment", "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-09-12T17:32:54.202Z" } } ] } }