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CVE-2022-48806

Severity CVSS v4.0:
Pending analysis
Type:
CWE-190 Integer Overflow or Wraparound
Publication date:
16/07/2024
Last modified:
03/10/2025

Description

In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> eeprom: ee1004: limit i2c reads to I2C_SMBUS_BLOCK_MAX<br /> <br /> Commit effa453168a7 ("i2c: i801: Don&amp;#39;t silently correct invalid transfer<br /> size") revealed that ee1004_eeprom_read() did not properly limit how<br /> many bytes to read at once.<br /> <br /> In particular, i2c_smbus_read_i2c_block_data_or_emulated() takes the<br /> length to read as an u8. If count == 256 after taking into account the<br /> offset and page boundary, the cast to u8 overflows. And this is common<br /> when user space tries to read the entire EEPROM at once.<br /> <br /> To fix it, limit each read to I2C_SMBUS_BLOCK_MAX (32) bytes, already<br /> the maximum length i2c_smbus_read_i2c_block_data_or_emulated() allows.

Impact

Vector 3.x
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVSS v3.1 Severity and Metrics:

Base Score: 5.50 MEDIUM
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): Low
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): None
Integrity (I): None
Availability (A): High

Base Score 3.x
5.50
Severity 3.x
MEDIUM

Vulnerable products and versions

CPE From Up to
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 4.4.300 (including) 4.5 (excluding)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 4.9.298 (including) 4.10 (excluding)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 4.14.263 (including) 4.15 (excluding)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 4.19.226 (including) 4.20 (excluding)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 5.4.174 (including) 5.4.180 (excluding)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 5.10.94 (including) 5.10.101 (excluding)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 5.15.17 (including) 5.15.24 (excluding)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 5.16.3 (including) 5.16.10 (excluding)
cpe:2.3:o:linux:linux_kernel:5.17:rc1:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:5.17:rc2:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:5.17:rc3:*:*:*:*:*:*

To consult the complete list of CPE names with products and versions, see this page


References to Advisories, Solutions, and Tools