214 lines
12 KiB
JSON
214 lines
12 KiB
JSON
{
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"dataType": "CVE_RECORD",
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"dataVersion": "5.2",
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"cveMetadata": {
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"cveId": "CVE-2022-48871",
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"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"state": "PUBLISHED",
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"assignerShortName": "Linux",
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"dateReserved": "2024-07-16T11:38:08.921Z",
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"datePublished": "2024-08-21T06:10:01.859Z",
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"dateUpdated": "2026-08-05T08:52:41.934Z"
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},
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"containers": {
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"cna": {
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"providerMetadata": {
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"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"shortName": "Linux",
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"dateUpdated": "2026-08-05T08:52:41.934Z"
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},
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"descriptions": [
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{
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"lang": "en",
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"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."
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}
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],
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"metrics": [
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{
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"cvssV3_1": {
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"version": "3.1",
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"vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
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"baseScore": 8.8,
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"baseSeverity": "HIGH"
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},
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"scenarios": [
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{
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"lang": "en",
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"value": "AV:A - The buggy RX path is exercised on Qualcomm GENI UARTs used as Bluetooth HCI transports (as documented in the fix); an adjacent Bluetooth peer can drive HCI/ACL traffic that fills the UART RX FIFO and triggers the out-of-bounds write without physical serial access.\nAC:L - On affected Qualcomm hardware the FIFO-depth mismatch is a fixed device property after port setup, and sending enough RX data reliably overflows the undersized slab buffer with no race or attacker-uncontrollable condition required.\nPR:N - An adjacent Bluetooth attacker needs no local account or capabilities; the system Bluetooth stack opens the GENI UART, and unauthenticated adjacent RF activity can produce UART RX that hits the vulnerable ISR path.\nUI:N - No victim action is required beyond a normal deployment where Bluetooth/HCI UART is already enabled and the port has been set up by the platform Bluetooth service.\nS:U - The corruption is confined to host kernel heap memory in the same security authority; this is privilege escalation / DoS on the local kernel, not a VM/IOMMU/sandbox boundary crossing.\nC:H - The slab out-of-bounds write of attacker-influenced UART RX bytes into adjacent heap objects is memory corruption that can be leveraged to obtain arbitrary kernel read primitives.\nI:H - Out-of-bounds heap write of controlled RX FIFO contents into neighboring slab objects enables corruption of kernel structures and control-flow hijacking / arbitrary write primitives.\nA:H - The same out-of-bounds write can crash the kernel (as shown by the KASAN slab-out-of-bounds report in softirq/ISR context), yielding a full availability impact."
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}
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]
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}
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],
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"affected": [
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{
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"product": "Linux",
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"vendor": "Linux",
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"defaultStatus": "unaffected",
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"programFiles": [
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"drivers/tty/serial/qcom_geni_serial.c"
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],
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"versions": [
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{
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"version": "f9d690b6ece7ec9a6ff6b588df95a010ab2d66f9",
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"lessThan": "894681682dbefdad917b88f86cde1069140a047a",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "f9d690b6ece7ec9a6ff6b588df95a010ab2d66f9",
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"lessThan": "cb53a3366eb28fed67850c80afa52075bb71a38a",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "f9d690b6ece7ec9a6ff6b588df95a010ab2d66f9",
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"lessThan": "fd524ca7fe45b8a06dca2dd546d62684a9768f95",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "f9d690b6ece7ec9a6ff6b588df95a010ab2d66f9",
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"lessThan": "b8caf69a6946e18ffebad49847e258f5b6d52ac2",
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"status": "affected",
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"versionType": "git"
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}
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]
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},
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{
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"product": "Linux",
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"vendor": "Linux",
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"defaultStatus": "affected",
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"programFiles": [
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"drivers/tty/serial/qcom_geni_serial.c"
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],
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"versions": [
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{
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"version": "5.7",
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"status": "affected"
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},
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{
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"version": "0",
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"lessThan": "5.7",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "5.10.165",
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"lessThanOrEqual": "5.10.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "5.15.90",
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"lessThanOrEqual": "5.15.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.1.8",
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"lessThanOrEqual": "6.1.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.2",
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"lessThanOrEqual": "*",
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"status": "unaffected",
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"versionType": "original_commit_for_fix"
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}
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]
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}
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],
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"cpeApplicability": [
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{
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"nodes": [
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{
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"operator": "OR",
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"negate": false,
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"cpeMatch": [
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "5.7",
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"versionEndExcluding": "5.10.165"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "5.7",
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"versionEndExcluding": "5.15.90"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "5.7",
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"versionEndExcluding": "6.1.8"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "5.7",
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"versionEndExcluding": "6.2"
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}
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]
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}
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]
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}
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],
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"references": [
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{
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"url": "https://git.kernel.org/stable/c/894681682dbefdad917b88f86cde1069140a047a"
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},
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{
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"url": "https://git.kernel.org/stable/c/cb53a3366eb28fed67850c80afa52075bb71a38a"
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},
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{
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"url": "https://git.kernel.org/stable/c/fd524ca7fe45b8a06dca2dd546d62684a9768f95"
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},
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{
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"url": "https://git.kernel.org/stable/c/b8caf69a6946e18ffebad49847e258f5b6d52ac2"
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}
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],
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"title": "tty: serial: qcom-geni-serial: fix slab-out-of-bounds on RX FIFO buffer",
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"x_generator": {
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"engine": "bippy-1.2.0"
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}
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},
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"adp": [
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{
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"metrics": [
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{
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"other": {
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"type": "ssvc",
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"content": {
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"id": "CVE-2022-48871",
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"role": "CISA Coordinator",
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"options": [
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{
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"Exploitation": "none"
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},
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{
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"Automatable": "no"
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},
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{
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"Technical Impact": "partial"
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}
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],
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"version": "2.0.3",
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"timestamp": "2024-09-10T16:05:28.910017Z"
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}
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}
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}
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],
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"title": "CISA ADP Vulnrichment",
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"providerMetadata": {
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"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
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"shortName": "CISA-ADP",
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"dateUpdated": "2024-09-12T17:32:54.202Z"
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}
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}
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]
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}
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} |