Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: iio: light: gp2ap002: Fix unbalanced runtime PM on repeated event writes The IIO core does not filter duplicate writes to the event enable attribute, so writing the same value twice invokes write_event_config() twice. Enabling twice leaks a runtime PM reference, preventing the device from ever suspending again; disabling twice underflows the usage count and triggers a "Runtime PM usage count underflow" warning. Bail out early when the requested state matches the current state. While at it, switch to pm_runtime_resume_and_get() so a failed resume is propagated to userspace instead of silently marking the event enabled.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 97d642e23037c5545266f9564c9b81e6db81b122 before b2d7a97d75b648a643f60d77f4d6d70161268855; affected 97d642e23037c5545266f9564c9b81e6db81b122 before 685d9d1e5c47e024413981fb7eddab86132b04a1; affected 97d642e23037c5545266f9564c9b81e6db81b122 before 56fe8e5f313a64e458bb6f8b982de925345e21a7; affected 97d642e23037c5545266f9564c9b81e6db81b122 before 8e76ab81319858736ccf23141e9415f9a1869337; affected 97d642e23037c5545266f9564c9b81e6db81b122 before 70b9482926ca92862460e659f5e5fde99ae0b4fa; affected 97d642e23037c5545266f9564c9b81e6db81b122 before 0fc740c25c9abb25113398ebb58e2f2ce57741a7; affected 97d642e23037c5545266f9564c9b81e6db81b122 before 470edb012b1d9a4fba1cd59e329e60f0798c791a; affected 97d642e23037c5545266f9564c9b81e6db81b122 before 579c049b4cb6fc72ce2c505fc5334540be0efcd3 |
| Linux / Linux | affected 5.7; unaffected 0 before 5.7; unaffected 5.10.270 through 5.10.*; unaffected 5.15.221 through 5.15.*; unaffected 6.1.188 through 6.1.*; unaffected 6.6.157 through 6.6.*; unaffected 6.12.110 through 6.12.*; unaffected 6.18.52 through 6.18.*; unaffected 7.2.6 through 7.2.*; unaffected 7.3 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/b2d7a97d75b648a643f60d77f4d6d70161268855
- https://git.kernel.org/stable/c/685d9d1e5c47e024413981fb7eddab86132b04a1
- https://git.kernel.org/stable/c/56fe8e5f313a64e458bb6f8b982de925345e21a7
- https://git.kernel.org/stable/c/8e76ab81319858736ccf23141e9415f9a1869337
- https://git.kernel.org/stable/c/70b9482926ca92862460e659f5e5fde99ae0b4fa
- https://git.kernel.org/stable/c/0fc740c25c9abb25113398ebb58e2f2ce57741a7
- https://git.kernel.org/stable/c/470edb012b1d9a4fba1cd59e329e60f0798c791a
- https://git.kernel.org/stable/c/579c049b4cb6fc72ce2c505fc5334540be0efcd3