CVE-2023-53555: 
Linux Kernel vulnerability analysis and mitigation

In the Linux kernel, a vulnerability (CVE-2023-53555) was discovered related to uninitialized memory access in the DAMON (Data Access MONitor) subsystem. The issue stems from the damosnewfilter() function not initializing the list field of newly allocated filter objects, affecting both the DAMON sysfs interface and DAMON_RECLAIM functionality (NVD).

The vulnerability occurs in the mm/damon/core component where damosnewfilter() fails to initialize the list field of a newly allocated filter object. When the DAMON sysfs interface and DAMONRECLAIM attempt to use this uninitialized field after calling damosnew_filter(), it can lead to accessing uninitialized memory. In particular, adding multiple DAMOS filters via the DAMON sysfs interface resulted in NULL pointer dereferencing (NVD).

The vulnerability can result in accessing uninitialized memory and NULL pointer dereferencing when using the DAMON sysfs interface, particularly when adding multiple DAMOS filters. This could potentially lead to system instability or crashes (NVD).

The issue has been resolved by initializing the list field immediately after allocation in the damosnewfilter() function. A patch has been implemented to address this vulnerability (NVD).