Description (CNA)
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.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected aca56c298e2a6d20ab6308e203a8d37f2a7759d3 before 3937c35493ee2847aaefcfa5460e94b7443eef49; affected 25714ad6bf5e98025579fa4c08ff2041a663910c before a37960df7eac3cc8094bd1ab84864e9e32c91345; affected be9313f755a7bfa02230b15731d07074d5255ecb before 9a5f471ae380f9fcb9756d453c12ca1f8595a93c; affected 07d9beb6e3c2e852e884113d6803ea4b3643ae38 before 9443ddeb3754e9e382a396b50adc1961301713ce; affected effa453168a7eeb8a562ff4edc1dbf9067360a61 before c0689e46be23160d925dca95dfc411f1a0462708; affected 74650c34f93044d3ab441235f161f9e1e761e96b; affected a126a8c3dd51519513141b4fc94fd4813bca2c0f; affected 202d0e22fe512df0f1cb6253d40ce1058e373247; affected 7414af7bdad9a9cddb3a765ca98ea207048618c5; affected 4.4.300 before 4.5; affected 4.9.298 before 4.10; affected 4.14.263 before 4.15; affected 4.19.226 before 4.20 |
| Linux / Linux | affected 5.4.174 before 5.4.180; affected 5.10.94 before 5.10.101; affected 5.15.17 before 5.15.24; affected 5.16.3 before 5.16.10 |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/3937c35493ee2847aaefcfa5460e94b7443eef49
- https://git.kernel.org/stable/c/a37960df7eac3cc8094bd1ab84864e9e32c91345
- https://git.kernel.org/stable/c/9a5f471ae380f9fcb9756d453c12ca1f8595a93c
- https://git.kernel.org/stable/c/9443ddeb3754e9e382a396b50adc1961301713ce
- https://git.kernel.org/stable/c/c0689e46be23160d925dca95dfc411f1a0462708
ADP enrichment
No English description supplied.
- https://git.kernel.org/stable/c/3937c35493ee2847aaefcfa5460e94b7443eef49
- https://git.kernel.org/stable/c/a37960df7eac3cc8094bd1ab84864e9e32c91345
- https://git.kernel.org/stable/c/9a5f471ae380f9fcb9756d453c12ca1f8595a93c
- https://git.kernel.org/stable/c/9443ddeb3754e9e382a396b50adc1961301713ce
- https://git.kernel.org/stable/c/c0689e46be23160d925dca95dfc411f1a0462708
No English description supplied.
No references supplied.