6.0
MEDIUM
CVE-2021-47153
Intel i2c-i801 Bus Interrupt Handling Buffer Overflow
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.

INFO

Published Date :

March 25, 2024, 9:15 a.m.

Last Modified :

Nov. 21, 2024, 6:35 a.m.

Source :

416baaa9-dc9f-4396-8d5f-8c081fb06d67

Remotely Exploitable :

No

Impact Score :

5.2

Exploitability Score :

0.8
Affected Products

The following products are affected by CVE-2021-47153 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Linux linux_kernel

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2021-47153 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2021-47153 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by af854a3a-2127-422b-91ae-364da2661108

    Nov. 21, 2024

    Action Type Old Value New Value
    Added Reference https://git.kernel.org/stable/c/04cc05e3716ae31b17ecdab7bc55c8170def1b8b
    Added Reference https://git.kernel.org/stable/c/09c9e79f4c10cfb6b9e0e1b4dd355232e4b5a3b3
    Added Reference https://git.kernel.org/stable/c/1f583d3813f204449037cd2acbfc09168171362a
    Added Reference https://git.kernel.org/stable/c/b523feb7e8e44652f92f3babb953a976e7ccbbef
    Added Reference https://git.kernel.org/stable/c/c70e1ba2e7e65255a0ce004f531dd90dada97a8c
    Added Reference https://git.kernel.org/stable/c/dfa8929e117b0228a7765f5c3f5988a4a028f3c6
    Added Reference https://git.kernel.org/stable/c/e4d8716c3dcec47f1557024add24e1f3c09eb24b
    Added Reference https://git.kernel.org/stable/c/f9469082126cebb7337db3992d143f5e4edfe629
  • CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0

    Nov. 05, 2024

    Action Type Old Value New Value
    Added CVSS V3.1 CISA-ADP AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:H
  • CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67

    May. 28, 2024

    Action Type Old Value New Value
  • CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67

    May. 14, 2024

    Action Type Old Value New Value
  • CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67

    Mar. 25, 2024

    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/f9469082126cebb7337db3992d143f5e4edfe629 [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/dfa8929e117b0228a7765f5c3f5988a4a028f3c6 [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/04cc05e3716ae31b17ecdab7bc55c8170def1b8b [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/1f583d3813f204449037cd2acbfc09168171362a [No types assigned]
    Added Reference kernel.org https://git.kernel.org/stable/c/e4d8716c3dcec47f1557024add24e1f3c09eb24b [No types assigned]
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2021-47153 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2021-47153 weaknesses.

CVSS31 - Vulnerability Scoring System
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Latest DB Update: Jul. 14, 2025 16:53