CVE-2026-52905

MEDIUMNVD 5.55.5—
EchelonGraph scoreMEDIUM confidence

Score 5.5 from GitHub Security Advisory published 2026-06-09. NVD baseline CVSS 5.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Trending — 4 sources updated this week
5.5EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 5.5Exploit: None knownExposed: 0

A fix is available — apply it.

In the Linux kernel, the following vulnerability has been resolved:

mm/damon/core: disallow non-power of two min_region_sz on damon_start()

Commit d8f867fa0825 ("mm/damon: add damon_ctx->min_sz_region") introduced a bug that allows unaligned DAMON region address ranges. Commit c80f46ac228b ("mm/damon/core: disallow non-power of two min_region_sz") fixed it, but only for damon_commit_ctx() use case. Still, DAMON sysfs interface can emit non-power of two min_region_sz via damon_start(). Fix the path by adding the is_power_of_2() check on damon_start().

The issue was discovered by sashiko [1].

CVSS v3
5.5
EG Score
5.5(medium)
EG Risk
29(Track)
EG Risk 29/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity55% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
2%
KEV
Not listed

Published

June 9, 2026

Last Modified

July 23, 2026

Advisory Details (3)

Auto-updated Jul 8, 2026
No patch confirmed yet.
generic

mm/damon/core: disallow non-power of two min_region_sz on damon_start() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/95093e5cb4c5b50a5b1a4b79f2942b62744bd66a
generic

mm/damon/core: disallow non-power of two min_region_sz on damon_start() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/89b6226b6c2a4add3939f361653a47c212d6ab75
generic

mm/damon/core: disallow non-power of two min_region_sz on damon_start() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/1de2db19a6028abe7d905875922faef5b873de67

Vendor Advisories for CVE-2026-52905(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Patch Availability(6)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntulinux-virtual-hwe-26.04-edge (7.0.0-27.27) @ resolute2026-08-25ubuntu
ubuntulinux-tools-raspi-realtime-7.0 (7.0.0-1014.14) @ resolute2026-08-25ubuntu
ubuntulinux-tools-nvidia-hwe-24.04-edge (7.0.0-1013.13) @ resolute2026-08-25ubuntu
ubuntulinux-virtual-hwe-24.04-edge (7.0.0-28.28~24.04.1) @ noble2026-08-25ubuntu
ubuntulinux-tools-azure-fde-7.0 (7.0.0-1009.9) @ resolute2026-08-25ubuntu
ubuntulinux-tools-oem-7.0 (7.0.0-1008.8) @ resolute2026-08-25ubuntu

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(1 across 1 ecosystem)
Debian:14(1)
PackageVulnerable rangeFixed inDependents
linux6.12.100-1 ... 7.0.4-1~bpo13+1 (131 versions)7.0.4-1—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

All Vendor Advisories

(6)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 17× in last 7d / 90× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 180 total refreshes for this CVE.

  1. 2026-08-25 13:49 UTCEPSS rescore
  2. 2026-08-25 00:52 UTCEG score recompute
  3. 2026-08-25 00:52 UTCVendor advisory
  4. 2026-08-25 00:51 UTCGHSA enrichment
  5. 2026-08-23 11:16 UTCEG score recompute
  6. 2026-08-23 11:16 UTCVendor advisory
  7. 2026-08-23 11:16 UTCGHSA enrichment
  8. 2026-08-23 00:19 UTCEPSS rescore
  9. 2026-08-21 23:49 UTCEPSS rescore
  10. 2026-08-21 08:26 UTCEG score recompute
  11. 2026-08-21 08:26 UTCVendor advisory
  12. 2026-08-21 08:26 UTCGHSA enrichment
  13. 2026-08-20 22:55 UTCEPSS rescore
  14. 2026-08-20 09:20 UTCEG score recompute
  15. 2026-08-20 09:20 UTCVendor advisory
  16. 2026-08-20 09:20 UTCGHSA enrichment
  17. 2026-08-19 17:04 UTCEPSS rescore
  18. 2026-08-18 13:48 UTCEPSS rescore
  19. 2026-08-17 13:47 UTCEPSS rescore
  20. 2026-08-17 00:52 UTCEG score recompute
  21. 2026-08-17 00:52 UTCVendor advisory
  22. 2026-08-17 00:52 UTCGHSA enrichment
  23. 2026-08-16 02:14 UTCEPSS rescore
  24. 2026-08-16 00:40 UTCEG score recompute
  25. 2026-08-16 00:40 UTCVendor advisory
Show 75 more
  1. 2026-08-16 00:40 UTCGHSA enrichment
  2. 2026-08-15 01:30 UTCEPSS rescore
  3. 2026-08-14 21:26 UTCVendor advisory
  4. 2026-08-14 21:26 UTCGHSA enrichment
  5. 2026-08-13 22:22 UTCEG score recompute
  6. 2026-08-13 22:22 UTCVendor advisory
  7. 2026-08-13 22:22 UTCGHSA enrichment
  8. 2026-08-13 22:00 UTCEPSS rescore
  9. 2026-08-12 18:58 UTCEG score recompute
  10. 2026-08-12 18:58 UTCVendor advisory
  11. 2026-08-12 18:58 UTCGHSA enrichment
  12. 2026-08-12 13:51 UTCEPSS rescore
  13. 2026-08-11 19:54 UTCEG score recompute
  14. 2026-08-11 19:54 UTCVendor advisory
  15. 2026-08-11 19:54 UTCGHSA enrichment
  16. 2026-08-11 00:00 UTCEPSS rescore
  17. 2026-08-10 20:50 UTCVendor advisory
  18. 2026-08-10 20:50 UTCGHSA enrichment
  19. 2026-08-09 16:30 UTCEG score recompute
  20. 2026-08-09 16:30 UTCVendor advisory
  21. 2026-08-09 16:30 UTCGHSA enrichment
  22. 2026-08-09 13:46 UTCEPSS rescore
  23. 2026-08-08 17:26 UTCEG score recompute
  24. 2026-08-08 17:26 UTCVendor advisory
  25. 2026-08-08 17:26 UTCGHSA enrichment
  26. 2026-08-08 16:37 UTCEPSS rescore
  27. 2026-08-07 18:20 UTCEG score recompute
  28. 2026-08-07 18:20 UTCVendor advisory
  29. 2026-08-07 18:20 UTCGHSA enrichment
  30. 2026-08-06 19:16 UTCEG score recompute
  31. 2026-08-06 19:16 UTCVendor advisory
  32. 2026-08-06 19:16 UTCGHSA enrichment
  33. 2026-08-06 13:47 UTCEPSS rescore
  34. 2026-08-05 20:12 UTCEG score recompute
  35. 2026-08-05 20:12 UTCVendor advisory
  36. 2026-08-05 20:12 UTCGHSA enrichment
  37. 2026-08-05 19:17 UTCEPSS rescore
  38. 2026-08-04 16:11 UTCEG score recompute
  39. 2026-08-04 16:11 UTCVendor advisory
  40. 2026-08-04 16:11 UTCGHSA enrichment
  41. 2026-08-04 15:10 UTCEPSS rescore
  42. 2026-08-04 10:39 UTCEPSS rescore
  43. 2026-08-03 15:05 UTCEG score recompute
  44. 2026-08-03 15:04 UTCGHSA enrichment
  45. 2026-08-03 10:36 UTCEPSS rescore
  46. 2026-08-02 09:30 UTCEG score recompute
  47. 2026-08-02 09:30 UTCVendor advisory
  48. 2026-08-02 09:30 UTCGHSA enrichment
  49. 2026-08-02 02:27 UTCEPSS rescore
  50. 2026-08-01 10:25 UTCEG score recompute
  51. 2026-08-01 10:25 UTCVendor advisory
  52. 2026-08-01 10:24 UTCGHSA enrichment
  53. 2026-08-01 04:16 UTCEPSS rescore
  54. 2026-07-31 10:18 UTCEG score recompute
  55. 2026-07-31 10:18 UTCGHSA enrichment
  56. 2026-07-30 16:28 UTCEPSS rescore
  57. 2026-07-30 11:13 UTCEG score recompute
  58. 2026-07-30 11:13 UTCVendor advisory
  59. 2026-07-30 11:12 UTCGHSA enrichment
  60. 2026-07-30 01:30 UTCEPSS rescore
  61. 2026-07-29 09:10 UTCEG score recompute
  62. 2026-07-29 09:10 UTCGHSA enrichment
  63. 2026-07-28 15:37 UTCEPSS rescore
  64. 2026-07-28 08:03 UTCEG score recompute
  65. 2026-07-28 08:03 UTCGHSA enrichment
  66. 2026-07-27 08:23 UTCEG score recompute
  67. 2026-07-27 08:23 UTCGHSA enrichment
  68. 2026-07-26 14:54 UTCEPSS rescore
  69. 2026-07-26 06:53 UTCEG score recompute
  70. 2026-07-26 06:52 UTCGHSA enrichment
  71. 2026-07-25 14:18 UTCEPSS rescore
  72. 2026-07-24 14:18 UTCEPSS rescore
  73. 2026-07-23 14:18 UTCEPSS rescore
  74. 2026-07-23 03:19 UTCEG score recompute
  75. 2026-07-22 14:08 UTCEPSS rescore

Frequently asked(5)

What is CVE-2026-52905?
CVE-2026-52905 is a medium vulnerability published on June 9, 2026. In the Linux kernel, the following vulnerability has been resolved: mm/damon/core: disallow non-power of two minregionsz on damon_start() Commit d8f867fa0825 ("mm/damon: add damonctx->minsz_region") introduced a bug that allows unaligned DAMON region address ranges. Commit c80f46ac228b…
When was CVE-2026-52905 disclosed?
CVE-2026-52905 was first published in the National Vulnerability Database on June 9, 2026, with the most recent update on July 23, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-52905 actively exploited?
CVE-2026-52905 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 98.5% of all scored CVEs.
What is the CVSS score of CVE-2026-52905?
CVE-2026-52905 has a CVSS v3 base score of 5.5 (NVD).
How do I remediate CVE-2026-52905?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-52905, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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