CVE-2023-54097
Description
In the Linux kernel, the following vulnerability has been resolved: regulator: stm32-pwr: fix of_iomap leak Smatch reports: drivers/regulator/stm32-pwr.c:166 stm32_pwr_regulator_probe() warn: 'base' from of_iomap() not released on lines: 151,166. In stm32_pwr_regulator_probe(), base is not released when devm_kzalloc() fails to allocate memory or devm_regulator_register() fails to register a new regulator device, which may cause a leak. To fix this issue, replace of_iomap() with devm_platform_ioremap_resource(). devm_platform_ioremap_resource() is a specialized function for platform devices. It allows 'base' to be automatically released whether the probe function succeeds or fails. Besides, use IS_ERR(base) instead of !base as the return value of devm_platform_ioremap_resource() can either be a pointer to the remapped memory or an ERR_PTR() encoded error code if the operation fails.
How to fix
- Linux Linux824683dbec234a01bd49a0589ee3323594a6f4cf, dfce9bb3517a78507cf96f9b83948d0b81338afa, ad6481f49fb2c703efa3a929643934f24b666d6a, f25994f7a9ad53eb756bc4869497c3ebe281ad5e, c091bb49b3233307c7af73dae888f0799752af3d, 0ad07e02be0d3f0d554653382ffe53ae4879378d, c4a413e56d16a2ae84e6d8992f215c4dcc7fac20 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Linux Linux | dc62f951a6a8490bcccc7b6de36cd85bd57be740 ≤ v < 824683dbec234a01bd49a0589ee3323594a6f4cf, dc62f951a6a8490bcccc7b6de36cd85bd57be740 ≤ v < dfce9bb3517a78507cf96f9b83948d0b81338afa, dc62f951a6a8490bcccc7b6de36cd85bd57be740 ≤ v < ad6481f49fb2c703efa3a929643934f24b666d6a, dc62f951a6a8490bcccc7b6de36cd85bd57be740 ≤ v < f25994f7a9ad53eb756bc4869497c3ebe281ad5e, dc62f951a6a8490bcccc7b6de36cd85bd57be740 ≤ v < c091bb49b3233307c7af73dae888f0799752af3d, dc62f951a6a8490bcccc7b6de36cd85bd57be740 ≤ v < 0ad07e02be0d3f0d554653382ffe53ae4879378d, dc62f951a6a8490bcccc7b6de36cd85bd57be740 ≤ v < c4a413e56d16a2ae84e6d8992f215c4dcc7fac20, 5.2 | 824683dbec234a01bd49a0589ee3323594a6f4cf, dfce9bb3517a78507cf96f9b83948d0b81338afa, ad6481f49fb2c703efa3a929643934f24b666d6a, f25994f7a9ad53eb756bc4869497c3ebe281ad5e, c091bb49b3233307c7af73dae888f0799752af3d, 0ad07e02be0d3f0d554653382ffe53ae4879378d, c4a413e56d16a2ae84e6d8992f215c4dcc7fac20 |
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