CVE-2026-31542

MEDIUMNVD 5.55.5—
EchelonGraph scoreMEDIUM confidence

Score 5.5 from GitHub Security Advisory published 2026-04-24. 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:

x86/platform/uv: Handle deconfigured sockets

When a socket is deconfigured, it's mapped to SOCK_EMPTY (0xffff). This causes a panic while allocating UV hub info structures.

Fix this by using NUMA_NO_NODE, allowing UV hub info structures to be allocated on valid nodes.

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

April 24, 2026

Last Modified

April 28, 2026

Advisory Details (5)

Auto-updated Aug 2, 2026
No patch confirmed yet.
generic

x86/platform/uv: Handle deconfigured sockets - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/c51957601d32c0d195bce0b9345dfe93ef5728cc
generic

x86/platform/uv: Handle deconfigured sockets - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/c1cf2218d2fa40a49921a7460981e5faab26f04e
generic

x86/platform/uv: Handle deconfigured sockets - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/9956d4892e78812246336c7ea51f5aa62018049e
generic

x86/platform/uv: Handle deconfigured sockets - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/79f0faf81d3bbbe5f07bf6892450d3740a1b290d
generic

x86/platform/uv: Handle deconfigured sockets - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/1f6aa5bbf1d0f81a8a2aafc16136e7dd9a609ff3

Patch Availability(1)

Vendor / EcosystemFixed in / PatchReleasedSource
linuxKernel @ 6.6.130—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

(2 across 2 ecosystems)
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 (122 versions)6.19.10-1—

All Vendor Advisories

(13)

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 5× in last 7d / 32× 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 213 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. 2026-09-10 09:34 UTCEPSS rescore
  5. 2026-09-08 22:00 UTCEPSS rescore
  6. 2026-09-07 16:01 UTCEPSS rescore
  7. 2026-09-06 13:47 UTCEPSS rescore
  8. 2026-09-06 13:47 UTCEPSS rescore
  9. 2026-09-04 05:06 UTCEPSS rescore
  10. 2026-09-04 03:16 UTCOSV refresh
  11. 2026-09-02 14:11 UTCEPSS rescore
  12. 2026-09-01 13:53 UTCEPSS rescore
  13. 2026-09-01 04:39 UTCEPSS rescore
  14. 2026-09-01 04:39 UTCEPSS rescore
  15. 2026-08-30 19:17 UTCEPSS rescore
  16. 2026-08-30 01:22 UTCEPSS rescore
  17. 2026-08-28 21:41 UTCEPSS rescore
  18. 2026-08-27 14:25 UTCEPSS rescore
  19. 2026-08-26 14:46 UTCEPSS rescore
  20. 2026-08-25 13:49 UTCEPSS rescore
  21. 2026-08-24 14:17 UTCEPSS rescore
  22. 2026-08-23 00:19 UTCEPSS rescore
  23. 2026-08-21 23:49 UTCEPSS rescore
  24. 2026-08-20 22:55 UTCEPSS rescore
  25. 2026-08-20 22:55 UTCEPSS rescore
Show 75 more
  1. 2026-08-19 17:03 UTCEPSS rescore
  2. 2026-08-18 13:48 UTCEPSS rescore
  3. 2026-08-17 14:53 UTCEG score recompute
  4. 2026-08-17 14:53 UTCVendor advisory
  5. 2026-08-17 14:53 UTCGHSA enrichment
  6. 2026-08-17 13:47 UTCEPSS rescore
  7. 2026-08-16 14:56 UTCEPSS rescore
  8. 2026-08-16 05:49 UTCEG score recompute
  9. 2026-08-16 05:49 UTCVendor advisory
  10. 2026-08-16 05:49 UTCGHSA enrichment
  11. 2026-08-16 02:14 UTCEPSS rescore
  12. 2026-08-15 01:30 UTCEPSS rescore
  13. 2026-08-14 04:09 UTCEG score recompute
  14. 2026-08-14 04:09 UTCVendor advisory
  15. 2026-08-14 04:09 UTCGHSA enrichment
  16. 2026-08-13 22:00 UTCEPSS rescore
  17. 2026-08-12 23:34 UTCEG score recompute
  18. 2026-08-12 23:34 UTCVendor advisory
  19. 2026-08-12 23:34 UTCGHSA enrichment
  20. 2026-08-12 13:50 UTCEPSS rescore
  21. 2026-08-12 00:52 UTCEG score recompute
  22. 2026-08-12 00:52 UTCVendor advisory
  23. 2026-08-12 00:52 UTCGHSA enrichment
  24. 2026-08-11 02:10 UTCEG score recompute
  25. 2026-08-11 02:10 UTCVendor advisory
  26. 2026-08-11 02:10 UTCGHSA enrichment
  27. 2026-08-11 00:00 UTCEPSS rescore
  28. 2026-08-10 02:04 UTCEG score recompute
  29. 2026-08-10 02:04 UTCVendor advisory
  30. 2026-08-10 02:04 UTCGHSA enrichment
  31. 2026-08-09 13:46 UTCEPSS rescore
  32. 2026-08-09 03:21 UTCEG score recompute
  33. 2026-08-09 03:21 UTCVendor advisory
  34. 2026-08-09 03:21 UTCGHSA enrichment
  35. 2026-08-08 16:37 UTCEPSS rescore
  36. 2026-08-07 20:29 UTCEG score recompute
  37. 2026-08-07 20:29 UTCVendor advisory
  38. 2026-08-07 20:29 UTCGHSA enrichment
  39. 2026-08-06 21:47 UTCEG score recompute
  40. 2026-08-06 21:47 UTCVendor advisory
  41. 2026-08-06 21:47 UTCGHSA enrichment
  42. 2026-08-06 13:46 UTCEPSS rescore
  43. 2026-08-05 22:58 UTCEG score recompute
  44. 2026-08-05 22:58 UTCVendor advisory
  45. 2026-08-05 22:58 UTCGHSA enrichment
  46. 2026-08-05 19:17 UTCEPSS rescore
  47. 2026-08-04 15:10 UTCEPSS rescore
  48. 2026-08-04 10:38 UTCEPSS rescore
  49. 2026-08-03 21:06 UTCEG score recompute
  50. 2026-08-03 21:06 UTCVendor advisory
  51. 2026-08-03 21:06 UTCGHSA enrichment
  52. 2026-08-03 10:36 UTCEPSS rescore
  53. 2026-08-02 11:26 UTCEG score recompute
  54. 2026-08-02 11:26 UTCVendor advisory
  55. 2026-08-02 11:26 UTCGHSA enrichment
  56. 2026-08-02 02:27 UTCEPSS rescore
  57. 2026-08-01 04:16 UTCEPSS rescore
  58. 2026-07-30 16:27 UTCEPSS rescore
  59. 2026-07-30 01:30 UTCEPSS rescore
  60. 2026-07-28 15:36 UTCEPSS rescore
  61. 2026-07-26 14:54 UTCEPSS rescore
  62. 2026-07-26 14:54 UTCEPSS rescore
  63. 2026-07-25 14:18 UTCEPSS rescore
  64. 2026-07-25 14:17 UTCEPSS rescore
  65. 2026-07-24 14:17 UTCEPSS rescore
  66. 2026-07-23 14:18 UTCEPSS rescore
  67. 2026-07-23 14:18 UTCEPSS rescore
  68. 2026-07-23 03:08 UTCEG score recompute
  69. 2026-07-22 14:08 UTCEPSS rescore
  70. 2026-07-22 14:08 UTCEPSS rescore
  71. 2026-07-21 15:24 UTCEPSS rescore
  72. 2026-07-21 15:24 UTCEPSS rescore
  73. 2026-07-20 17:08 UTCEPSS rescore
  74. 2026-07-20 17:08 UTCEPSS rescore
  75. 2026-07-19 22:48 UTCOSV refresh

Frequently asked(5)

What is CVE-2026-31542?
CVE-2026-31542 is a medium vulnerability published on April 24, 2026. In the Linux kernel, the following vulnerability has been resolved: x86/platform/uv: Handle deconfigured sockets When a socket is deconfigured, it's mapped to SOCK_EMPTY (0xffff). This causes a panic while allocating UV hub info structures. Fix this by using NUMANONODE, allowing UV hub info…
When was CVE-2026-31542 disclosed?
CVE-2026-31542 was first published in the National Vulnerability Database on April 24, 2026, with the most recent update on April 28, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-31542 actively exploited?
CVE-2026-31542 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 97.8% of all scored CVEs.
What is the CVSS score of CVE-2026-31542?
CVE-2026-31542 has a CVSS v3 base score of 5.5 (NVD).
How do I remediate CVE-2026-31542?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-31542, 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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