In the Linux kernel, the following vulnerability has been resolved:
serial: sc16is7xx: fix invalid FIFO access with special register set
When enabling access to the special register set, Receiver time-out and
RHR interrupts can happen. In this case, the IRQ handler will try to read
from the FIFO thru the RHR register at address 0x00, but address 0x00 is
mapped to DLL register, resulting in erroneous FIFO reading.
Call graph example:
sc16is7xx_startup(): entry
sc16is7xx_ms_proc(): entry
sc16is7xx_set_termios(): entry
sc16is7xx_set_baud(): DLH/DLL = $009C --> access special register set
sc16is7xx_port_irq() entry --> IIR is 0x0C
sc16is7xx_handle_rx() entry
sc16is7xx_fifo_read(): --> unable to access FIFO (RHR) because it is
mapped to DLL (LCR=LCR_CONF_MODE_A)
sc16is7xx_set_baud(): exit --> Restore access to general register set
Fix the problem by claiming the efr_lock mutex when accessing the Special
register set.
References
Configurations
Configuration 1 (hide)
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History
09 Oct 2024, 14:21
Type | Values Removed | Values Added |
---|---|---|
CVSS |
v2 : v3 : |
v2 : unknown
v3 : 5.5 |
CWE | NVD-CWE-noinfo | |
CPE | cpe:2.3:o:linux:linux_kernel:6.11:rc1:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:6.11:rc2:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* |
|
References | () https://git.kernel.org/stable/c/6a6730812220a9a5ce4003eb347da1ee5abd06b0 - Patch | |
References | () https://git.kernel.org/stable/c/7d3b793faaab1305994ce568b59d61927235f57b - Patch | |
First Time |
Linux linux Kernel
Linux |
05 Sep 2024, 12:53
Type | Values Removed | Values Added |
---|---|---|
Summary |
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04 Sep 2024, 19:15
Type | Values Removed | Values Added |
---|---|---|
New CVE |
Information
Published : 2024-09-04 19:15
Updated : 2024-10-09 14:21
NVD link : CVE-2024-44950
Mitre link : CVE-2024-44950
CVE.ORG link : CVE-2024-44950
JSON object : View
Products Affected
linux
- linux_kernel
CWE