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

NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.

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	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
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
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 by NIST 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]