Description
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 products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Linux Linux
Default version status: unaffected
e27e3dac651771fe3250f6305dee277bce29fc5d to < a60794ee3f453516ab3ed212ba0295ecf890bc8caffectede27e3dac651771fe3250f6305dee277bce29fc5d to < f856511058c8cb470d6c6c7ce908870adcdc7dc6affectede27e3dac651771fe3250f6305dee277bce29fc5d to < 656e2fe98ac452db4e5b8147d1f33b8c35b4ec4baffectede27e3dac651771fe3250f6305dee277bce29fc5d to < 541fc6f733b32463cf23277637bb07e2aaa00b53affectede27e3dac651771fe3250f6305dee277bce29fc5d to < ea01c061d839b520f385f112908de1c6e3391327affectede27e3dac651771fe3250f6305dee277bce29fc5d to < 528052af901d6e6bbfa0e52362a70a58a5dd1e43affectede27e3dac651771fe3250f6305dee277bce29fc5d to < 0e022ee4f8e0dc843ba4c80bb75408a7704279afaffectede27e3dac651771fe3250f6305dee277bce29fc5d to < 66cc9dec919dd63d8e4b3d386f7aed3ae684e645affected
Linux Linux
Default version status: affected
2.6.23affected0 to < 2.6.23unaffected5.10.271 to ≤ 5.10.*unaffected5.15.222 to ≤ 5.15.*unaffected6.1.189 to ≤ 6.1.*unaffected6.6.158 to ≤ 6.6.*unaffected6.12.111 to ≤ 6.12.*unaffected6.18.53 to ≤ 6.18.*unaffected7.2.7 to ≤ 7.2.*unaffected7.3 to ≤ *unaffected
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 ↗