Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: EDAC/device_sysfs: Use kstrtouint() for poll_msec to prevent truncation The poll_msec sysfs store file uses simple_strtoul() which accepts an unsigned long, but the target field (poll_msec) is unsigned int. On 64-bit systems, a value > UINT_MAX is silently truncated when stored. Fix the mismatch by using kstrtouint() instead. This rejects values larger than UINT_MAX at parse time, making truncation impossible. Also add a check for value < 1 to reject the 0-delay case, which would cause the poll work to spin without delay and consume 100% CPU.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected e27e3dac651771fe3250f6305dee277bce29fc5d before a60794ee3f453516ab3ed212ba0295ecf890bc8c; affected e27e3dac651771fe3250f6305dee277bce29fc5d before f856511058c8cb470d6c6c7ce908870adcdc7dc6; affected e27e3dac651771fe3250f6305dee277bce29fc5d before 656e2fe98ac452db4e5b8147d1f33b8c35b4ec4b; affected e27e3dac651771fe3250f6305dee277bce29fc5d before 541fc6f733b32463cf23277637bb07e2aaa00b53; affected e27e3dac651771fe3250f6305dee277bce29fc5d before ea01c061d839b520f385f112908de1c6e3391327; affected e27e3dac651771fe3250f6305dee277bce29fc5d before 528052af901d6e6bbfa0e52362a70a58a5dd1e43; affected e27e3dac651771fe3250f6305dee277bce29fc5d before 0e022ee4f8e0dc843ba4c80bb75408a7704279af; affected e27e3dac651771fe3250f6305dee277bce29fc5d before 66cc9dec919dd63d8e4b3d386f7aed3ae684e645 |
| Linux / Linux | affected 2.6.23; unaffected 0 before 2.6.23; unaffected 5.10.271 through 5.10.*; unaffected 5.15.222 through 5.15.*; unaffected 6.1.189 through 6.1.*; unaffected 6.6.158 through 6.6.*; unaffected 6.12.111 through 6.12.*; unaffected 6.18.53 through 6.18.*; unaffected 7.2.7 through 7.2.*; unaffected 7.3 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/a60794ee3f453516ab3ed212ba0295ecf890bc8c
- https://git.kernel.org/stable/c/f856511058c8cb470d6c6c7ce908870adcdc7dc6
- https://git.kernel.org/stable/c/656e2fe98ac452db4e5b8147d1f33b8c35b4ec4b
- https://git.kernel.org/stable/c/541fc6f733b32463cf23277637bb07e2aaa00b53
- https://git.kernel.org/stable/c/ea01c061d839b520f385f112908de1c6e3391327
- https://git.kernel.org/stable/c/528052af901d6e6bbfa0e52362a70a58a5dd1e43
- https://git.kernel.org/stable/c/0e022ee4f8e0dc843ba4c80bb75408a7704279af
- https://git.kernel.org/stable/c/66cc9dec919dd63d8e4b3d386f7aed3ae684e645