CVE-2026-53188

HIGHPre-NVD 8.88.8
EchelonGraph scoreMEDIUM confidence

Score 8.8 from GitHub Security Advisory (severity: HIGH) published 2026-06-25. the CNA's CVSS baseline 8.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cna:linux, epss, ghsa
8.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 8.8Exploit: 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:

RDMA/core: Validate the passed in fops for ib_get_ucaps()

Sashiko pointed out it is not safe to rely only on the devt because char/block alias so if the user finds a block device with the same dev_t it can masquerade as a ucap cdev fd.

Test the f_ops to only accept authentic cdevs.

CVSS v3
8.8
EG Score
8.8(medium)
EG Risk
44(Track)
EG Risk 44/100SSVC: 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
Severity88% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
7%
KEV
Not listed

Published

June 25, 2026

Last Modified

August 5, 2026

Advisory Details (3)

Auto-updated Jun 28, 2026
No patch confirmed yet.
generic

RDMA/core: Validate the passed in fops for ib_get_ucaps() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/aa181287ebdcc53ee0ba5c2f8243e2d541ebc19b
generic

RDMA/core: Validate the passed in fops for ib_get_ucaps() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/96b6e98ff12d50ed5817230c6f1188e1150d225d
generic

RDMA/core: Validate the passed in fops for ib_get_ucaps() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/4a1b1ac2744694a2ecd66a84bdb1445f4ef24bee

Vendor Advisories for CVE-2026-53188(1)

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

Affected Packages

(1 across 1 ecosystem)
Debian:14(1)
PackageVulnerable rangeFixed inDependents
linux6.12.100-1 ... 7.0.9-1~bpo13+1 (145 versions)7.0.13-1

Data Freshness Timeline

(refreshed 5× in last 7d / 60× 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 204 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-53188?
CVE-2026-53188 is a high vulnerability published on June 25, 2026. In the Linux kernel, the following vulnerability has been resolved: RDMA/core: Validate the passed in fops for ibgetucaps() Sashiko pointed out it is not safe to rely only on the devt because char/block alias so if the user finds a block device with the same dev_t it can masquerade as a ucap cdev…
When was CVE-2026-53188 disclosed?
CVE-2026-53188 was first published in the National Vulnerability Database on June 25, 2026, with the most recent update on August 5, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-53188 actively exploited?
CVE-2026-53188 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 93.1% of all scored CVEs.
What is the CVSS score of CVE-2026-53188?
CVE-2026-53188 has a CVSS v4.0 base score of 8.8 (CNA self-assessment; NVD's own analysis pending).
How do I remediate CVE-2026-53188?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-53188, 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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