Description

In the Linux kernel, the following vulnerability has been resolved: tty: serial: qcom-geni-serial: fix slab-out-of-bounds on RX FIFO buffer Driver's probe allocates memory for RX FIFO (port->rx_fifo) based on default RX FIFO depth, e.g. 16. Later during serial startup the qcom_geni_serial_port_setup() updates the RX FIFO depth (port->rx_fifo_depth) to match real device capabilities, e.g. to 32. The RX UART handle code will read "port->rx_fifo_depth" number of words into "port->rx_fifo" buffer, thus exceeding the bounds. This can be observed in certain configurations with Qualcomm Bluetooth HCI UART device and KASAN: Bluetooth: hci0: QCA Product ID :0x00000010 Bluetooth: hci0: QCA SOC Version :0x400a0200 Bluetooth: hci0: QCA ROM Version :0x00000200 Bluetooth: hci0: QCA Patch Version:0x00000d2b Bluetooth: hci0: QCA controller version 0x02000200 Bluetooth: hci0: QCA Downloading qca/htbtfw20.tlv bluetooth hci0: Direct firmware load for qca/htbtfw20.tlv failed with error -2 Bluetooth: hci0: QCA Failed to request file: qca/htbtfw20.tlv (-2) Bluetooth: hci0: QCA Failed to download patch (-2) ================================================================== BUG: KASAN: slab-out-of-bounds in handle_rx_uart+0xa8/0x18c Write of size 4 at addr ffff279347d578c0 by task swapper/0/0 CPU: 0 PID: 0 Comm: swapper/0 Not tainted 6.1.0-rt5-00350-gb2450b7e00be-dirty #26 Hardware name: Qualcomm Technologies, Inc. Robotics RB5 (DT) Call trace: dump_backtrace.part.0+0xe0/0xf0 show_stack+0x18/0x40 dump_stack_lvl+0x8c/0xb8 print_report+0x188/0x488 kasan_report+0xb4/0x100 __asan_store4+0x80/0xa4 handle_rx_uart+0xa8/0x18c qcom_geni_serial_handle_rx+0x84/0x9c qcom_geni_serial_isr+0x24c/0x760 __handle_irq_event_percpu+0x108/0x500 handle_irq_event+0x6c/0x110 handle_fasteoi_irq+0x138/0x2cc generic_handle_domain_irq+0x48/0x64 If the RX FIFO depth changes after probe, be sure to resize the buffer.

Metrics

 

CVSS Version 4.0 CVSS Version 3.x CVSS Version 2.0

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CVSS 4.0 Severity and Vector Strings:

NIST: NVD

N/A

NVD assessment not yet provided.

CVSS 3.x Severity and Vector Strings:

NIST: NVD

Base Score:  7.1 HIGH

Vector:  CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H

CVSS 2.0 Severity and Vector Strings:

NIST: NVD

Base Score: N/A

NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

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Hyperlink	Resource
https://git.kernel.org/stable/c/894681682dbefdad917b88f86cde1069140a047a	Patch
https://git.kernel.org/stable/c/b8caf69a6946e18ffebad49847e258f5b6d52ac2	Patch
https://git.kernel.org/stable/c/cb53a3366eb28fed67850c80afa52075bb71a38a	Patch
https://git.kernel.org/stable/c/fd524ca7fe45b8a06dca2dd546d62684a9768f95	Patch

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-125	Out-of-bounds Read	NIST

Known Affected Software Configurations Switch to CPE 2.2

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Change History

2 change records found show changes

Initial Analysis by NIST 9/06/2024 10:23:03 AM

Action	Type	Old Value	New Value
Added	CVSS V3.1		NIST AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
Added	CWE		NIST CWE-125
Added	CPE Configuration		OR *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.7 up to (excluding) 5.10.165 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.11 up to (excluding) 5.15.90 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.16 up to (excluding) 6.1.8
Changed	Reference Type	https://git.kernel.org/stable/c/894681682dbefdad917b88f86cde1069140a047a No Types Assigned	https://git.kernel.org/stable/c/894681682dbefdad917b88f86cde1069140a047a Patch
Changed	Reference Type	https://git.kernel.org/stable/c/b8caf69a6946e18ffebad49847e258f5b6d52ac2 No Types Assigned	https://git.kernel.org/stable/c/b8caf69a6946e18ffebad49847e258f5b6d52ac2 Patch
Changed	Reference Type	https://git.kernel.org/stable/c/cb53a3366eb28fed67850c80afa52075bb71a38a No Types Assigned	https://git.kernel.org/stable/c/cb53a3366eb28fed67850c80afa52075bb71a38a Patch
Changed	Reference Type	https://git.kernel.org/stable/c/fd524ca7fe45b8a06dca2dd546d62684a9768f95 No Types Assigned	https://git.kernel.org/stable/c/fd524ca7fe45b8a06dca2dd546d62684a9768f95 Patch

New CVE Received from kernel.org 8/21/2024 3:15:04 AM

Action	Type	Old Value	New Value
Added	Description		Record truncated, showing 500 of 1977 characters. View Entire Change Record In the Linux kernel, the following vulnerability has been resolved: tty: serial: qcom-geni-serial: fix slab-out-of-bounds on RX FIFO buffer Driver's probe allocates memory for RX FIFO (port->rx_fifo) based on default RX FIFO depth, e.g. 16. Later during serial startup the qcom_geni_serial_port_setup() updates the RX FIFO depth (port->rx_fifo_depth) to match real device capabilities, e.g. to 32. The RX UART handle code will read "port->rx_fifo_depth" number of words into "port->rx_fifo" buffe
Added	Reference		kernel.org https://git.kernel.org/stable/c/894681682dbefdad917b88f86cde1069140a047a [No types assigned]
Added	Reference		kernel.org https://git.kernel.org/stable/c/b8caf69a6946e18ffebad49847e258f5b6d52ac2 [No types assigned]
Added	Reference		kernel.org https://git.kernel.org/stable/c/cb53a3366eb28fed67850c80afa52075bb71a38a [No types assigned]
Added	Reference		kernel.org https://git.kernel.org/stable/c/fd524ca7fe45b8a06dca2dd546d62684a9768f95 [No types assigned]