Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: mm/damon: fix divide by zero in damon_get_intervals_score() The current implementation allows having zero size regions with no special reasons, but damon_get_intervals_score() gets crashed by divide by zero when the region size is zero. [ 29.403950] Oops: divide error: 0000 [#1] SMP NOPTI This patch fixes the bug, but does not disallow zero size regions to keep the backward compatibility since disallowing zero size regions might be a breaking change for some users. In addition, the same crash can happen when intervals_goal.access_bp is zero so this should be fixed in stable trees as well.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected f04b0fedbe714f822bd066b319a60faa39a985a1 before ca4bb9ac706f05ead8ac1cce7b8245fc0645a687; affected f04b0fedbe714f822bd066b319a60faa39a985a1 before bd225b9591442065beb876da72656f4a2d627d03 |
| Linux / Linux | affected 6.15; unaffected 0 before 6.15; unaffected 6.15.7 through 6.15.*; unaffected 6.16 through * |
CWE
No CWE identifiers supplied.