CVE-2022-48806
eeprom: ee1004: limit i2c reads to I2C_SMBUS_BLOCK_MAX
Severity Score
Exploit Likelihood
Affected Versions
Public Exploits
0Exploited in Wild
-Decision
Descriptions
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.
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.
CVSS Scores
SSVC
- Decision:Track
Timeline
- 2024-07-16 CVE Reserved
- 2024-07-16 CVE Published
- 2024-12-19 CVE Updated
- 2025-03-21 EPSS Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
- ---------- First Exploit
CWE
CAPEC
References (13)
| URL | Tag | Source |
|---|---|---|
| https://git.kernel.org/stable/c/aca56c298e2a6d20ab6308e203a8d37f2a7759d3 | Vuln. Introduced | |
| https://git.kernel.org/stable/c/25714ad6bf5e98025579fa4c08ff2041a663910c | Vuln. Introduced | |
| https://git.kernel.org/stable/c/be9313f755a7bfa02230b15731d07074d5255ecb | Vuln. Introduced | |
| https://git.kernel.org/stable/c/07d9beb6e3c2e852e884113d6803ea4b3643ae38 | Vuln. Introduced | |
| https://git.kernel.org/stable/c/74650c34f93044d3ab441235f161f9e1e761e96b | Vuln. Introduced | |
| https://git.kernel.org/stable/c/a126a8c3dd51519513141b4fc94fd4813bca2c0f | Vuln. Introduced | |
| https://git.kernel.org/stable/c/202d0e22fe512df0f1cb6253d40ce1058e373247 | Vuln. Introduced | |
| https://git.kernel.org/stable/c/7414af7bdad9a9cddb3a765ca98ea207048618c5 | Vuln. Introduced |
| URL | Date | SRC |
|---|
| URL | Date | SRC |
|---|
Affected Vendors, Products, and Versions
| Vendor | Product | Version | Other | Status | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Vendor | Product | Version | Other | Status | <-- --> | Vendor | Product | Version | Other | Status |
| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 5.4.174 < 5.4.180 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.4.174 < 5.4.180" | en |
Affected
| ||||||
| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 5.10.94 < 5.10.101 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.10.94 < 5.10.101" | en |
Affected
| ||||||
| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 5.15.17 < 5.15.24 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.15.17 < 5.15.24" | en |
Affected
| ||||||
| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 5.16.3 < 5.16.10 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.16.3 < 5.16.10" | en |
Affected
| ||||||
| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | 4.4.300 Search vendor "Linux" for product "Linux Kernel" and version "4.4.300" | en |
Affected
| ||||||
| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | 4.9.298 Search vendor "Linux" for product "Linux Kernel" and version "4.9.298" | en |
Affected
| ||||||
| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | 4.14.263 Search vendor "Linux" for product "Linux Kernel" and version "4.14.263" | en |
Affected
| ||||||
| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | 4.19.226 Search vendor "Linux" for product "Linux Kernel" and version "4.19.226" | en |
Affected
| ||||||