CVE-2022-48806
"Linux Kernel EEPROM I2C SMBUS Block Data Overflow Vulnerability"
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.
INFO
Published Date :
July 16, 2024, 12:15 p.m.
Last Modified :
Nov. 21, 2024, 7:34 a.m.
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Remotely Exploitable :
No
Impact Score :
Exploitability Score :
References to Advisories, Solutions, and Tools
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CVE-2022-48806.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
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The following list is the news that have been mention
CVE-2022-48806 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2022-48806 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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CVE Modified by af854a3a-2127-422b-91ae-364da2661108
Nov. 21, 2024
Action Type Old Value New Value Added Reference https://git.kernel.org/stable/c/3937c35493ee2847aaefcfa5460e94b7443eef49 Added Reference https://git.kernel.org/stable/c/9443ddeb3754e9e382a396b50adc1961301713ce Added Reference https://git.kernel.org/stable/c/9a5f471ae380f9fcb9756d453c12ca1f8595a93c Added Reference https://git.kernel.org/stable/c/a37960df7eac3cc8094bd1ab84864e9e32c91345 Added Reference https://git.kernel.org/stable/c/c0689e46be23160d925dca95dfc411f1a0462708 -
CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Jul. 16, 2024
Action Type Old Value New Value Added 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. Added Reference kernel.org https://git.kernel.org/stable/c/3937c35493ee2847aaefcfa5460e94b7443eef49 [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/a37960df7eac3cc8094bd1ab84864e9e32c91345 [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/9a5f471ae380f9fcb9756d453c12ca1f8595a93c [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/9443ddeb3754e9e382a396b50adc1961301713ce [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/c0689e46be23160d925dca95dfc411f1a0462708 [No types assigned]
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2022-48806 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2022-48806
weaknesses.