CVE-2026-63885

HIGHPre-NVD 8.88.8—
EchelonGraph scoreMEDIUM confidence

Score 8.8 from GitHub Security Advisory (severity: HIGH) published 2026-07-19. the CNA's CVSS baseline 8.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cna:linux, epss, ghsa
Trending — 3 sources updated this week
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:

drm/gem: fix race between change_handle and handle_delete

drm_gem_change_handle_ioctl leaves the old handle live in the IDR during the window between spin_unlock(table_lock) and the final spin_lock(table_lock). A concurrent drm_gem_handle_delete on the old handle succeeds in this window, decrements handle_count to 0, and frees the GEM object while the new handle's IDR entry still references it.

NULL the old handle's IDR entry before dropping table_lock so that any concurrent GEM_CLOSE on the old handle sees NULL and returns -EINVAL. Restore the old entry on the prime-bookkeeping error path.

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

July 19, 2026

Last Modified

August 5, 2026

Advisory Details (3)

Auto-updated Jul 20, 2026
No patch confirmed yet.
generic

drm/gem: fix race between change_handle and handle_delete - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/cde2c9257cbe8463b9dcf7b1075177b72b5fd938
generic

drm/gem: fix race between change_handle and handle_delete - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/7164d78559b0ff29931a366a840a9e5dd53d4b7c
generic

drm/gem: fix race between change_handle and handle_delete - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/0dfa42cfe4dbe114533480503934f43e33c1e83d

Vendor Advisories for CVE-2026-63885(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 (138 versions)7.0.12-1—

Data Freshness Timeline

(refreshed 20× in last 7d / 108× 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 151 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-63885?
CVE-2026-63885 is a high vulnerability published on July 19, 2026. In the Linux kernel, the following vulnerability has been resolved: drm/gem: fix race between changehandle and handledelete drmgemchangehandleioctl leaves the old handle live in the IDR during the window between spinunlock(tablelock) and the final spinlock(tablelock). A concurrent…
When was CVE-2026-63885 disclosed?
CVE-2026-63885 was first published in the National Vulnerability Database on July 19, 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-2026-63885 actively exploited?
CVE-2026-63885 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 93.2% of all scored CVEs.
What is the CVSS score of CVE-2026-63885?
CVE-2026-63885 has a CVSS v4.0 base score of 8.8 (CNA self-assessment; NVD's own analysis pending).
How do I remediate CVE-2026-63885?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-63885, 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

See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-63885

Explore →

Is Your Infrastructure Affected by CVE-2026-63885?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Start Free Scan →Browse All CVEs