Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: iio: magnetometer: ak8975: fix potential kernel stack memory leak Currently in the AK8975 driver there are four instances where potential uninitialized kernel stack memory leaks can occur. If i2c_smbus_read_i2c_block_data_or_emulated() returns a value less than the size of the buffer, uninitialized bytes are retained in the buffer and later the buffer is passed on to IIO buffers, potentially leaking memory to userspace. Fix this by adding checks whether the return value of the function is equal to the size of the buffer and subsequently if the value is lesser than zero to distinguish from a returned error code.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected bc11ca4a0b84a2f2ebaca2614b92998738d13b1e before 12848f4ded022963944c063e09a192549a4dad1e; affected bc11ca4a0b84a2f2ebaca2614b92998738d13b1e before a9cf46054f81972f8c0f1dc2a79d2a141999dbce; affected bc11ca4a0b84a2f2ebaca2614b92998738d13b1e before 9f920550abacedc7fc3163dea65ac2a7d0b0765d; affected bc11ca4a0b84a2f2ebaca2614b92998738d13b1e before 8cf346074533356d67a6a6a43a192328ad341f11; affected bc11ca4a0b84a2f2ebaca2614b92998738d13b1e before b974566803bceb72f0b9b5f1d7270b79ba963766; affected bc11ca4a0b84a2f2ebaca2614b92998738d13b1e before 3d57672119525c59ed73ea21accb001ccbcd6cfd; affected bc11ca4a0b84a2f2ebaca2614b92998738d13b1e before fb27ebf81136e796c7b719303ef6fd7e1ae5d488; affected bc11ca4a0b84a2f2ebaca2614b92998738d13b1e before a9a00d727b7bbc5e913a919530a9dd468935bf95 |
| Linux / Linux | affected 4.7; unaffected 0 before 4.7; unaffected 5.10.261 through 5.10.*; unaffected 5.15.212 through 5.15.*; unaffected 6.1.178 through 6.1.*; unaffected 6.6.145 through 6.6.*; unaffected 6.12.97 through 6.12.*; unaffected 6.18.40 through 6.18.*; unaffected 7.1.5 through 7.1.*; unaffected 7.2 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/12848f4ded022963944c063e09a192549a4dad1e
- https://git.kernel.org/stable/c/a9cf46054f81972f8c0f1dc2a79d2a141999dbce
- https://git.kernel.org/stable/c/9f920550abacedc7fc3163dea65ac2a7d0b0765d
- https://git.kernel.org/stable/c/8cf346074533356d67a6a6a43a192328ad341f11
- https://git.kernel.org/stable/c/b974566803bceb72f0b9b5f1d7270b79ba963766
- https://git.kernel.org/stable/c/3d57672119525c59ed73ea21accb001ccbcd6cfd
- https://git.kernel.org/stable/c/fb27ebf81136e796c7b719303ef6fd7e1ae5d488
- https://git.kernel.org/stable/c/a9a00d727b7bbc5e913a919530a9dd468935bf95