CVE-2021-47153

CVE Details

Release Date:2024-03-25

Description


In the Linux kernel, the following vulnerability has been resolved:\ni2c: i801: Don't generate an interrupt on bus reset\nNow that the i2c-i801 driver supports interrupts, setting the KILL bit\nin a attempt to recover from a timed out transaction triggers an\ninterrupt. Unfortunately, the interrupt handler (i801_isr) is not\nprepared for this situation and will try to process the interrupt as\nif it was signaling the end of a successful transaction. In the case\nof a block transaction, this can result in an out-of-range memory\naccess.\nThis condition was reproduced several times by syzbot:\nhttps://syzkaller.appspot.com/bug?extid=ed71512d469895b5b34e\nhttps://syzkaller.appspot.com/bug?extid=8c8dedc0ba9e03f6c79e\nhttps://syzkaller.appspot.com/bug?extid=c8ff0b6d6c73d81b610e\nhttps://syzkaller.appspot.com/bug?extid=33f6c360821c399d69eb\nhttps://syzkaller.appspot.com/bug?extid=be15dc0b1933f04b043a\nhttps://syzkaller.appspot.com/bug?extid=b4d3fd1dfd53e90afd79\nSo disable interrupts while trying to reset the bus. Interrupts will\nbe enabled again for the following transaction.

See more information about CVE-2021-47153 from MITRE CVE dictionary and NIST NVD


CVSS Scoring


NOTE: The following CVSS v3.1 metrics and score provided are preliminary and subject to review.

Base Score: 5.2 CVSS Vector: CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:L/I:L/A:H
Attack Vector: Local network Attack Complexity: High
Privileges Required: High User Interaction: None
Scope: Unchanged Confidentiality Impact: Low
Integrity Impact: Low Availability Impact: High

Errata information


PlatformErrataRelease Date
Oracle Linux version 6 (kernel-uek)ELSA-2024-126062024-09-02
Oracle Linux version 7 (kernel-uek)ELSA-2024-126062024-09-02
Oracle Linux version 8 (kernel)ELSA-2024-36182024-06-05
Oracle VM version 3 (kernel-uek)OVMSA-2024-00112024-09-03


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