CVE - CVE-2022-48806

CVE-ID
CVE-2022-48806	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: 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.
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/3937c35493ee2847aaefcfa5460e94b7443eef49 URL:https://git.kernel.org/stable/c/3937c35493ee2847aaefcfa5460e94b7443eef49 MISC:https://git.kernel.org/stable/c/9443ddeb3754e9e382a396b50adc1961301713ce URL:https://git.kernel.org/stable/c/9443ddeb3754e9e382a396b50adc1961301713ce MISC:https://git.kernel.org/stable/c/9a5f471ae380f9fcb9756d453c12ca1f8595a93c URL:https://git.kernel.org/stable/c/9a5f471ae380f9fcb9756d453c12ca1f8595a93c MISC:https://git.kernel.org/stable/c/a37960df7eac3cc8094bd1ab84864e9e32c91345 URL:https://git.kernel.org/stable/c/a37960df7eac3cc8094bd1ab84864e9e32c91345 MISC:https://git.kernel.org/stable/c/c0689e46be23160d925dca95dfc411f1a0462708 URL:https://git.kernel.org/stable/c/c0689e46be23160d925dca95dfc411f1a0462708
Assigning CNA
kernel.org
Date Record Created
20240716	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 (20240716)
Votes (Legacy)

Comments (Legacy)

Proposed (Legacy)
N/A
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