A vulnerability in the Linux kernel's DAMON subsystem allowed non-power-of-two minimum region sizes via the damon_start() interface, leading to… (CVE-2026-52905)
A vulnerability in the Linux kernel's DAMON subsystem allowed non-power-of-two minimum region sizes via the damon_start() interface, leading to unaligned DAMON region address ranges. This issue was fixed by adding a power-of-two check on damon_start(). The vulnerability does not impact confidentiality or integrity but can cause availability issues.
AI Analysis
Technical Summary
The Linux kernel contained a vulnerability in the DAMON (Data Access MONitor) subsystem where the damon_start() interface could accept a minimum region size (min_region_sz) that was not a power of two. This was due to an incomplete fix that only applied the power-of-two check in damon_commit_ctx(), leaving damon_start() vulnerable. The flaw allowed unaligned DAMON region address ranges, potentially causing issues affecting system availability. The problem was corrected by adding an is_power_of_2() validation on damon_start().
Potential Impact
The vulnerability does not affect confidentiality or integrity but has an impact on availability, as indicated by the CVSS vector (AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H). No known exploits are reported in the wild.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official patch links are provided in the data. Users should monitor vendor communications for updates and apply fixes once available.
A vulnerability in the Linux kernel's DAMON subsystem allowed non-power-of-two minimum region sizes via the damon_start() interface, leading to… (CVE-2026-52905)
Description
A vulnerability in the Linux kernel's DAMON subsystem allowed non-power-of-two minimum region sizes via the damon_start() interface, leading to unaligned DAMON region address ranges. This issue was fixed by adding a power-of-two check on damon_start(). The vulnerability does not impact confidentiality or integrity but can cause availability issues.
CVSS v3.1
Score 5.5medium
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The Linux kernel contained a vulnerability in the DAMON (Data Access MONitor) subsystem where the damon_start() interface could accept a minimum region size (min_region_sz) that was not a power of two. This was due to an incomplete fix that only applied the power-of-two check in damon_commit_ctx(), leaving damon_start() vulnerable. The flaw allowed unaligned DAMON region address ranges, potentially causing issues affecting system availability. The problem was corrected by adding an is_power_of_2() validation on damon_start().
Potential Impact
The vulnerability does not affect confidentiality or integrity but has an impact on availability, as indicated by the CVSS vector (AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H). No known exploits are reported in the wild.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official patch links are provided in the data. Users should monitor vendor communications for updates and apply fixes once available.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-q36j-3hm6-hh2w
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-52905"]
- Ecosystems
- []
- Database Specific Severity
- MODERATE
- Cvss Version
- 3.1
Threat ID: 6a4f6c2c68715ace43158088
Added to database: 07/09/2026, 09:38:52 UTC
Last enriched: 07/09/2026, 09:47:43 UTC
Last updated: 07/31/2026, 19:22:59 UTC
Views: 66
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