CVE - CVE-2021-47153

CVE-ID
CVE-2021-47153	Learn more at National Vulnerability Database (NVD) • CVSS Severity Rating • Fix Information • Vulnerable Software Versions • SCAP Mappings • CPE Information
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.
References
Note: References are provided for the convenience of the reader to help distinguish between vulnerabilities. The list is not intended to be complete.
MISC:https://git.kernel.org/stable/c/04cc05e3716ae31b17ecdab7bc55c8170def1b8b URL:https://git.kernel.org/stable/c/04cc05e3716ae31b17ecdab7bc55c8170def1b8b MISC:https://git.kernel.org/stable/c/09c9e79f4c10cfb6b9e0e1b4dd355232e4b5a3b3 URL:https://git.kernel.org/stable/c/09c9e79f4c10cfb6b9e0e1b4dd355232e4b5a3b3 MISC:https://git.kernel.org/stable/c/1f583d3813f204449037cd2acbfc09168171362a URL:https://git.kernel.org/stable/c/1f583d3813f204449037cd2acbfc09168171362a MISC:https://git.kernel.org/stable/c/b523feb7e8e44652f92f3babb953a976e7ccbbef URL:https://git.kernel.org/stable/c/b523feb7e8e44652f92f3babb953a976e7ccbbef MISC:https://git.kernel.org/stable/c/c70e1ba2e7e65255a0ce004f531dd90dada97a8c URL:https://git.kernel.org/stable/c/c70e1ba2e7e65255a0ce004f531dd90dada97a8c MISC:https://git.kernel.org/stable/c/dfa8929e117b0228a7765f5c3f5988a4a028f3c6 URL:https://git.kernel.org/stable/c/dfa8929e117b0228a7765f5c3f5988a4a028f3c6 MISC:https://git.kernel.org/stable/c/e4d8716c3dcec47f1557024add24e1f3c09eb24b URL:https://git.kernel.org/stable/c/e4d8716c3dcec47f1557024add24e1f3c09eb24b MISC:https://git.kernel.org/stable/c/f9469082126cebb7337db3992d143f5e4edfe629 URL:https://git.kernel.org/stable/c/f9469082126cebb7337db3992d143f5e4edfe629
Assigning CNA
kernel.org
Date Record Created
20240304	Disclaimer: The record creation date may reflect when the CVE ID was allocated or reserved, and does not necessarily indicate when this vulnerability was discovered, shared with the affected vendor, publicly disclosed, or updated in CVE.
Phase (Legacy)
Assigned (20240304)
Votes (Legacy)

Comments (Legacy)

Proposed (Legacy)
N/A
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