CVE-2026-31480

MEDIUMNVD 5.55.5—
EchelonGraph scoreMEDIUM confidence

Score 5.5 from GitHub Security Advisory published 2026-04-22. NVD baseline CVSS 5.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
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

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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

tracing: Fix potential deadlock in cpu hotplug with osnoise

The following sequence may leads deadlock in cpu hotplug:

task1 task2 task3 ----- ----- -----

mutex_lock(&interface_lock)

[CPU GOING OFFLINE]

cpus_write_lock(); osnoise_cpu_die(); kthread_stop(task3); wait_for_completion();

osnoise_sleep(); mutex_lock(&interface_lock);

cpus_read_lock();

[DEAD LOCK]

Fix by swap the order of cpus_read_lock() and mutex_lock(&interface_lock).

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

April 22, 2026

Last Modified

April 27, 2026

Advisory Details (7)

Auto-updated Jun 14, 2026
No patch confirmed yet.
generic

tracing: Fix potential deadlock in cpu hotplug with osnoise - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/f278b8ebf7eba2a1699cfc7bf30dd3ef898d60d7
generic

tracing: Fix potential deadlock in cpu hotplug with osnoise - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/ef41a85a55022e27cdaebf22a6676910b66f65aa
generic

tracing: Fix potential deadlock in cpu hotplug with osnoise - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/cf929c21eeed5bd39873fb14bfdfff963fa6f1da
generic

tracing: Fix potential deadlock in cpu hotplug with osnoise - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/7aa095ce7d224308cb6979956f0de8607df93d4f
generic

tracing: Fix potential deadlock in cpu hotplug with osnoise - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/7a41d4633cd2c15eb5ed31e8f3b16910e50a8c9f
generic

tracing: Fix potential deadlock in cpu hotplug with osnoise - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/1f9885732248d22f788e4992c739a98c88ab8a55
generic

tracing: Fix potential deadlock in cpu hotplug with osnoise - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/03474a01c199de17a8e2d39b51df6beb9c76e831

Vendor Advisories for CVE-2026-31480(1)

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

Patch Availability(1)

Vendor / EcosystemFixed in / PatchReleasedSource
linuxKernel @ 5.15.203—osv

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

(4 across 4 ecosystems)
Debian:11(1)
PackageVulnerable rangeFixed inDependents
linux-6.16.1.106-3~deb11u1 ... 6.1.164-1~deb11u1 (16 versions)6.1.170-1~deb11u1—
Debian:12(1)
PackageVulnerable rangeFixed inDependents
linux6.1.106-1 ... 6.1.99-1 (48 versions)6.1.170-1—
Debian:13(1)
PackageVulnerable rangeFixed inDependents
linux6.12.38-1 ... 6.12.85-1~bpo12+1 (17 versions)6.12.85-1—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
linux6.12.100-1 ... 6.19~rc8-1~exp1 (124 versions)6.19.11-1—

Weakness Classification(1)

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

Additional Vendor Advisories

(24)

Vendors that published advisories for this CVE beyond the curated set above. Broader coverage but minimal per-row detail — click through for the original advisory.

Data Freshness Timeline

(refreshed 4× in last 7d / 25× 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 211 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-31480?
CVE-2026-31480 is a medium vulnerability published on April 22, 2026. In the Linux kernel, the following vulnerability has been resolved: tracing: Fix potential deadlock in cpu hotplug with osnoise The following sequence may leads deadlock in cpu hotplug: task1 task2 task3 ----- ----- ----- mutexlock(&interfacelock) [CPU GOING OFFLINE] cpuswritelock();…
When was CVE-2026-31480 disclosed?
CVE-2026-31480 was first published in the National Vulnerability Database on April 22, 2026, with the most recent update on April 27, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-31480 actively exploited?
CVE-2026-31480 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-2026-31480?
CVE-2026-31480 has a CVSS v3 base score of 5.5 (NVD).
How do I remediate CVE-2026-31480?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-31480, 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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