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Vulnerability Change Records for CVE-2021-47153

Change History

New CVE Received by NIST 3/25/2024 5:15:09 AM

Action Type Old Value New Value
Added Description

								
							
							
						
In the Linux kernel, the following vulnerability has been resolved:

i2c: i801: Don't generate an interrupt on bus reset

Now that the i2c-i801 driver supports interrupts, setting the KILL bit
in a attempt to recover from a timed out transaction triggers an
interrupt. Unfortunately, the interrupt handler (i801_isr) is not
prepared for this situation and will try to process the interrupt as
if it was signaling the end of a successful transaction. In the case
of a block transaction, this can result in an out-of-range memory
access.

This condition was reproduced several times by syzbot:
https://syzkaller.appspot.com/bug?extid=ed71512d469895b5b34e
https://syzkaller.appspot.com/bug?extid=8c8dedc0ba9e03f6c79e
https://syzkaller.appspot.com/bug?extid=c8ff0b6d6c73d81b610e
https://syzkaller.appspot.com/bug?extid=33f6c360821c399d69eb
https://syzkaller.appspot.com/bug?extid=be15dc0b1933f04b043a
https://syzkaller.appspot.com/bug?extid=b4d3fd1dfd53e90afd79

So disable interrupts while trying to reset the bus. Interrupts will
be enabled again for the following transaction.
Added Reference

								
							
							
						
kernel.org https://git.kernel.org/stable/c/04cc05e3716ae31b17ecdab7bc55c8170def1b8b [No types assigned]
Added Reference

								
							
							
						
kernel.org https://git.kernel.org/stable/c/09c9e79f4c10cfb6b9e0e1b4dd355232e4b5a3b3 [No types assigned]
Added Reference

								
							
							
						
kernel.org https://git.kernel.org/stable/c/1f583d3813f204449037cd2acbfc09168171362a [No types assigned]
Added Reference

								
							
							
						
kernel.org https://git.kernel.org/stable/c/b523feb7e8e44652f92f3babb953a976e7ccbbef [No types assigned]
Added Reference

								
							
							
						
kernel.org https://git.kernel.org/stable/c/c70e1ba2e7e65255a0ce004f531dd90dada97a8c [No types assigned]
Added Reference

								
							
							
						
kernel.org https://git.kernel.org/stable/c/dfa8929e117b0228a7765f5c3f5988a4a028f3c6 [No types assigned]
Added Reference

								
							
							
						
kernel.org https://git.kernel.org/stable/c/e4d8716c3dcec47f1557024add24e1f3c09eb24b [No types assigned]
Added Reference

								
							
							
						
kernel.org https://git.kernel.org/stable/c/f9469082126cebb7337db3992d143f5e4edfe629 [No types assigned]