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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2021-47153 Detail

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.


Metrics

 
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 CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

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URL Source(s) Tag(s)
https://git.kernel.org/stable/c/04cc05e3716ae31b17ecdab7bc55c8170def1b8b CVE, kernel.org Patch 
https://git.kernel.org/stable/c/09c9e79f4c10cfb6b9e0e1b4dd355232e4b5a3b3 CVE, kernel.org Patch 
https://git.kernel.org/stable/c/1f583d3813f204449037cd2acbfc09168171362a CVE, kernel.org Patch 
https://git.kernel.org/stable/c/b523feb7e8e44652f92f3babb953a976e7ccbbef CVE, kernel.org Patch 
https://git.kernel.org/stable/c/c70e1ba2e7e65255a0ce004f531dd90dada97a8c CVE, kernel.org Patch 
https://git.kernel.org/stable/c/dfa8929e117b0228a7765f5c3f5988a4a028f3c6 CVE, kernel.org Patch 
https://git.kernel.org/stable/c/e4d8716c3dcec47f1557024add24e1f3c09eb24b CVE, kernel.org Patch 
https://git.kernel.org/stable/c/f9469082126cebb7337db3992d143f5e4edfe629 CVE, kernel.org Patch 

Weakness Enumeration

CWE-ID CWE Name Source
CWE-125 Out-of-bounds Read cwe source acceptance level NIST  

Known Affected Software Configurations Switch to CPE 2.2

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Change History

6 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2021-47153
NVD Published Date:
03/25/2024
NVD Last Modified:
09/16/2025
Source:
kernel.org