CVE-2023-53555
mm/damon/core: initialize damo_filter->list from damos_new_filter()
Reported by linux · Published October 4, 2025
In the Linux kernel, the following vulnerability has been resolved: mm/damon/core: initialize damo_filter->list from damos_new_filter() damos_new_filter() is not initializing the list field of newly allocated filter object. However, DAMON sysfs interface and DAMON_RECLAIM are not initializing it after calling damos_new_filter(). As a result, accessing uninitialized memory is possible. Actually, adding multiple DAMOS filters via DAMON sysfs interface caused NULL pointer dereferencing. Initialize the field just after the allocation from damos_new_filter().
EPSS 0.13% · 2.6th percentile
Fixed versions
Upgrade to a fixed version or later. Language registries are listed first, then Linux distributions, then vendor products.
| Package | Ecosystem | Fixed in |
|---|---|---|
| linux_kernel | linux | 6.4.11 |
Risk scores
Affected products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux | 98def236f63c66629fb6b2d4b69cecffc5b46539, 98def236f63c66629fb6b2d4b69cecffc5b46539 |
| Linux | Linux | 6.3, 0, 6.4.11 |
| linux | linux_kernel | 6.3, 6.3 |
| Linux | Linux | 98def236f63c66629fb6b2d4b69cecffc5b46539, 0, 6.4.11 |
Timeline
- Oct 4, 2025 CVE Published
- Oct 5, 2025 EPSS Score (30 in total, the first dated here)
- Oct 6, 2025 Coalition ESS Score (6 in total, the first dated here)
- Oct 12, 2025 PoC Published (5 in total, the first dated here)
- Jan 24, 2026 Security Advisory (102 in total, the first dated here)
- Jun 17, 2026 CVE Updated
- Oct 10, 2026 Distribution Patch (91 in total, the first dated here)
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