PT-2024-11202 · Linux+6 · Linux Kernel+6
Syzbot
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Published
2021-05-27
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Updated
2024-11-05
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CVE-2021-47153
CVSS v3.1
7.1
High
| Vector | AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H |
Name of the Vulnerable Software and Affected Versions
Linux kernel (affected versions not specified)
Description
The issue is related to the i2c-i801 driver in the Linux kernel, which supports interrupts. When the KILL bit is set to recover from a timed out transaction, it triggers an interrupt. However, the interrupt handler
i801 isr is not prepared for this situation and tries to process the interrupt as if it was signaling the end of a successful transaction. This can result in an out-of-range memory access, particularly in the case of a block transaction. The condition was reproduced several times by syzbot.Recommendations
At the moment, there is no information about a newer version that contains a fix for this vulnerability.
Exploit
Out of bounds Read
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Weakness Enumeration
Related Identifiers
Affected Products
Almalinux
Astra Linux
Centos
Linux Kernel
Red Hat
Rocky Linux
Suse