CVE-2026-64415

MEDIUMNVD 5.55.5—
EchelonGraph scoreMEDIUM confidence

Score 5.5 from GitHub Security Advisory published 2026-07-25. 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/swap: add cond_resched() in swap_reclaim_full_clusters to prevent softlockup

We hit a real softlockup in an internal stress test environment. The workload was LTP memory/swap stress on a large arm64 machine, with 320 CPUs, about 1TB memory and an 8.6GB swap device. The system was under heavy load and the swap device had a large number of full clusters. The softlockup was triggered during a stress test after about 3 days.

So, add periodic cond_resched() calls during large full_clusters reclaim operations to prevent softlockup issues.

Detailed call trace as follow:

PID: 3817773 TASK: ffff0883bb28b780 CPU: 48 COMMAND: "kworker/48:7" #0 [ffff800080183d10] __crash_kexec at ffffa4c1361e5de4 #1 [ffff800080183d90] panic at ffffa4c1360d5e9c #2 [ffff800080183e20] watchdog_timer_fn at ffffa4c136231fa8 ... #16 [ffff8000c4ad3cb0] swap_cache_del_folio at ffffa4c1363e1614 #17 [ffff8000c4ad3ce0] __try_to_reclaim_swap at ffffa4c1363e4bfc #18 [ffff8000c4ad3d40] swap_reclaim_full_clusters at ffffa4c1363e5474 #19 [ffff8000c4ad3da0] swap_reclaim_work at ffffa4c1363e550c #20 [ffff8000c4ad3dc0] process_one_work at ffffa4c136102edc #21 [ffff8000c4ad3e10] worker_thread at ffffa4c136103398 #22 [ffff8000c4ad3e70] kthread at ffffa4c13610d95c

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
1%
KEV
Not listed

Published

July 25, 2026

Last Modified

September 4, 2026

Advisory Details (4)

Auto-updated Sep 4, 2026
No patch confirmed yet.
generic

mm/swap: add cond_resched() in swap_reclaim_full_clusters to prevent softlockup - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/69c0e6246575b780ae0d3f411c749bcf13c221f3
generic

mm/swap: add cond_resched() in swap_reclaim_full_clusters to prevent softlockup - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/66366d291f666ddeda5f8c84f253e308de3e6b55
generic

mm/swap: add cond_resched() in swap_reclaim_full_clusters to prevent softlockup - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/60cbe67d1342f34b66df1c2ee328e3cd333767d7
generic

mm/swap: add cond_resched() in swap_reclaim_full_clusters to prevent softlockup - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/2a55fdf9f746a1a6ced7fd62ea1080b8a917e0b0

Vendor Advisories for CVE-2026-64415(1)

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

Patch Availability(4)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntulinux-virtual-hwe-26.04-edge (7.0.0-31.31) @ resolute2026-09-18ubuntu
ubuntulinux-tools-oem-7.0 (7.0.0-1013.13) @ resolute2026-09-18ubuntu
ubuntulinux-tools-gcp-edge (7.0.0-1011.11~24.04.1) @ noble2026-09-18ubuntu
ubuntulinux-tools-nvidia-hwe-24.04-edge (7.0.0-1018.18~24.04.1) @ noble2026-09-18ubuntu

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

(3 across 3 ecosystems)
Debian:12(1)
PackageVulnerable rangeFixed inDependents
linux-6.12—6.12.100-1~deb12u1—
Debian:13(1)
PackageVulnerable rangeFixed inDependents
linux6.12.38-1 ... 6.12.95-1~bpo12+1 (30 versions)6.12.96-1—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
linux6.12.100-1 ... 7.1~rc7-1~exp1 (158 versions)7.1.4-1—

Weakness Classification(1)

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

All Vendor Advisories

(4)

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 16× in last 7d / 57× 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 103 total refreshes for this CVE.

  1. 2026-09-18 19:28 UTCEPSS rescore
  2. 2026-09-18 08:39 UTCEG score recompute
  3. 2026-09-18 08:39 UTCVendor advisory
  4. 2026-09-18 08:39 UTCGHSA enrichment
  5. 2026-09-17 09:11 UTCEG score recompute
  6. 2026-09-17 09:11 UTCVendor advisory
  7. 2026-09-17 09:11 UTCGHSA enrichment
  8. 2026-09-16 14:08 UTCEPSS rescore
  9. 2026-09-16 06:26 UTCEG score recompute
  10. 2026-09-16 06:26 UTCVendor advisory
  11. 2026-09-16 06:25 UTCGHSA enrichment
  12. 2026-09-16 05:15 UTCEPSS rescore
  13. 2026-09-14 15:52 UTCVendor advisory
  14. 2026-09-14 15:52 UTCGHSA enrichment
  15. 2026-09-13 15:22 UTCVendor advisory
  16. 2026-09-13 15:22 UTCGHSA enrichment
  17. 2026-09-12 15:48 UTCVendor advisory
  18. 2026-09-12 15:48 UTCGHSA enrichment
  19. 2026-09-11 16:21 UTCEG score recompute
  20. 2026-09-11 16:21 UTCVendor advisory
  21. 2026-09-11 16:21 UTCGHSA enrichment
  22. 2026-09-11 14:53 UTCEPSS rescore
  23. 2026-09-10 13:17 UTCEG score recompute
  24. 2026-09-10 13:17 UTCVendor advisory
  25. 2026-09-10 13:17 UTCGHSA enrichment
Show 75 more
  1. 2026-09-09 08:34 UTCEG score recompute
  2. 2026-09-09 08:34 UTCVendor advisory
  3. 2026-09-09 08:34 UTCGHSA enrichment
  4. 2026-09-08 22:01 UTCEPSS rescore
  5. 2026-09-07 21:13 UTCEG score recompute
  6. 2026-09-07 21:13 UTCVendor advisory
  7. 2026-09-07 21:13 UTCGHSA enrichment
  8. 2026-09-07 16:01 UTCEPSS rescore
  9. 2026-09-06 18:47 UTCEG score recompute
  10. 2026-09-06 18:47 UTCGHSA enrichment
  11. 2026-09-06 13:47 UTCEPSS rescore
  12. 2026-09-05 19:20 UTCEG score recompute
  13. 2026-09-05 19:20 UTCGHSA enrichment
  14. 2026-09-05 15:31 UTCEPSS rescore
  15. 2026-09-04 15:30 UTCEG score recompute▲ 5.50
  16. 2026-09-04 15:30 UTCGHSA enrichment
  17. 2026-09-04 15:29 UTCNVD updateCVSS v3 → 5.5 · severity → MEDIUM
  18. 2026-09-04 12:39 UTCGHSA enrichment
  19. 2026-09-04 05:07 UTCEPSS rescore
  20. 2026-09-02 14:12 UTCEPSS rescore
  21. 2026-09-01 04:40 UTCEPSS rescore
  22. 2026-08-30 19:17 UTCEPSS rescore
  23. 2026-08-30 10:14 UTCGHSA enrichment
  24. 2026-08-30 01:22 UTCEPSS rescore
  25. 2026-08-28 21:42 UTCEPSS rescore
  26. 2026-08-27 02:36 UTCGHSA enrichment
  27. 2026-08-26 14:47 UTCEPSS rescore
  28. 2026-08-25 13:49 UTCEPSS rescore
  29. 2026-08-23 19:36 UTCGHSA enrichment
  30. 2026-08-23 00:19 UTCEPSS rescore
  31. 2026-08-21 23:49 UTCEPSS rescore
  32. 2026-08-20 22:55 UTCEPSS rescore
  33. 2026-08-20 12:40 UTCGHSA enrichment
  34. 2026-08-19 17:04 UTCEPSS rescore
  35. 2026-08-18 13:48 UTCEPSS rescore
  36. 2026-08-17 13:47 UTCEPSS rescore
  37. 2026-08-17 05:44 UTCGHSA enrichment
  38. 2026-08-17 05:25 UTCNVD update
  39. 2026-08-17 05:17 UTCGHSA enrichment
  40. 2026-08-17 05:05 UTCMITRE cvelistV5
  41. 2026-08-16 14:56 UTCEPSS rescore
  42. 2026-08-15 01:30 UTCEPSS rescore
  43. 2026-08-14 22:05 UTCGHSA enrichment
  44. 2026-08-13 22:00 UTCEPSS rescore
  45. 2026-08-12 13:51 UTCEPSS rescore
  46. 2026-08-11 15:06 UTCGHSA enrichment
  47. 2026-08-11 13:28 UTCGHSA enrichment
  48. 2026-08-11 00:00 UTCEPSS rescore
  49. 2026-08-09 13:47 UTCEPSS rescore
  50. 2026-08-08 16:37 UTCEPSS rescore
  51. 2026-08-08 06:32 UTCGHSA enrichment
  52. 2026-08-06 13:47 UTCEPSS rescore
  53. 2026-08-05 19:17 UTCEPSS rescore
  54. 2026-08-05 19:17 UTCEPSS rescore
  55. 2026-08-04 23:36 UTCGHSA enrichment
  56. 2026-08-04 15:10 UTCEPSS rescore
  57. 2026-08-04 10:39 UTCEPSS rescore
  58. 2026-08-03 10:36 UTCEPSS rescore
  59. 2026-08-02 02:27 UTCEPSS rescore
  60. 2026-08-01 16:40 UTCEG score recompute
  61. 2026-08-01 16:40 UTCGHSA enrichment
  62. 2026-08-01 04:16 UTCEPSS rescore
  63. 2026-07-30 16:28 UTCEPSS rescore
  64. 2026-07-30 01:30 UTCEPSS rescore
  65. 2026-07-30 01:30 UTCEPSS rescore
  66. 2026-07-29 09:44 UTCEG score recompute
  67. 2026-07-29 09:44 UTCGHSA enrichment
  68. 2026-07-28 15:37 UTCEPSS rescore
  69. 2026-07-27 14:14 UTCEPSS rescore
  70. 2026-07-26 14:54 UTCEPSS rescore
  71. 2026-07-26 14:54 UTCEPSS rescore
  72. 2026-07-26 02:48 UTCEG score recompute
  73. 2026-07-26 02:47 UTCGHSA enrichment
  74. 2026-07-25 14:18 UTCEPSS rescore
  75. 2026-07-25 14:18 UTCEPSS rescore

Frequently asked(5)

What is CVE-2026-64415?
CVE-2026-64415 is a medium vulnerability published on July 25, 2026. In the Linux kernel, the following vulnerability has been resolved: mm/swap: add condresched() in swapreclaimfullclusters to prevent softlockup We hit a real softlockup in an internal stress test environment. The workload was LTP memory/swap stress on a large arm64 machine, with 320 CPUs, about 1TB…
When was CVE-2026-64415 disclosed?
CVE-2026-64415 was first published in the National Vulnerability Database on July 25, 2026, with the most recent update on September 4, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-64415 actively exploited?
CVE-2026-64415 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 99.3% of all scored CVEs.
What is the CVSS score of CVE-2026-64415?
CVE-2026-64415 has a CVSS v3 base score of 5.5 (NVD).
How do I remediate CVE-2026-64415?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-64415, 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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