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CVE-2022-48806 Detail

Description

In the Linux kernel, the following vulnerability has been resolved: eeprom: ee1004: limit i2c reads to I2C_SMBUS_BLOCK_MAX Commit effa453168a7 ("i2c: i801: Don't silently correct invalid transfer size") revealed that ee1004_eeprom_read() did not properly limit how many bytes to read at once. In particular, i2c_smbus_read_i2c_block_data_or_emulated() takes the length to read as an u8. If count == 256 after taking into account the offset and page boundary, the cast to u8 overflows. And this is common when user space tries to read the entire EEPROM at once. To fix it, limit each read to I2C_SMBUS_BLOCK_MAX (32) bytes, already the maximum length i2c_smbus_read_i2c_block_data_or_emulated() allows.


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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Hyperlink Resource
https://git.kernel.org/stable/c/3937c35493ee2847aaefcfa5460e94b7443eef49
https://git.kernel.org/stable/c/9443ddeb3754e9e382a396b50adc1961301713ce
https://git.kernel.org/stable/c/9a5f471ae380f9fcb9756d453c12ca1f8595a93c
https://git.kernel.org/stable/c/a37960df7eac3cc8094bd1ab84864e9e32c91345
https://git.kernel.org/stable/c/c0689e46be23160d925dca95dfc411f1a0462708

Weakness Enumeration

CWE-ID CWE Name Source

Change History

1 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2022-48806
NVD Published Date:
07/16/2024
NVD Last Modified:
07/16/2024
Source:
kernel.org