CVE-2026-46065

HIGHPre-NVD 7.87.8—
EchelonGraph scoreMEDIUM confidence

Score 7.8 from GitHub Security Advisory (severity: HIGH) published 2026-05-27. the CNA's CVSS baseline 7.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cna:linux, epss, ghsa
Trending — 4 sources updated this week
7.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.8Exploit: None knownExposed: 0

A fix is available — apply it.

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

fbdev: defio: Disconnect deferred I/O from the lifetime of struct fb_info

Hold state of deferred I/O in struct fb_deferred_io_state. Allocate an instance as part of initializing deferred I/O and remove it only after the final mapping has been closed. If the fb_info and the contained deferred I/O meanwhile goes away, clear struct fb_deferred_io_state.info to invalidate the mapping. Any access will then result in a SIGBUS signal.

Fixes a long-standing problem, where a device hot-unplug happens while user space still has an active mapping of the graphics memory. The hot- unplug frees the instance of struct fb_info. Accessing the memory will operate on undefined state.

CVSS v3
7.8
EG Score
7.8(medium)
EG Risk
40(Track)
EG Risk 40/100SSVC: 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
Severity78% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
3%
KEV
Not listed

Published

May 27, 2026

Last Modified

August 5, 2026

Advisory Details (5)

Auto-updated Jun 5, 2026
No patch confirmed yet.
generic

fbdev: defio: Disconnect deferred I/O from the lifetime of struct fb_info - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/a0aafb421dd15e935d81543152617f2742cefa70
generic

fbdev: defio: Disconnect deferred I/O from the lifetime of struct fb_info - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/9ded47ad003f09a94b6a710b5c47f4aa5ceb7429
generic

fbdev: defio: Disconnect deferred I/O from the lifetime of struct fb_info - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/2b53d3a52e8e5403a4f4fb57ac6cad3fd2cb1066
generic

fbdev: defio: Disconnect deferred I/O from the lifetime of struct fb_info - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/2a40f8bc9bb713329f1c35ffc199ee961a7135b0
generic

fbdev: defio: Disconnect deferred I/O from the lifetime of struct fb_info - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/25c2b77bc463f29ee71a54b883548baf9386a0db

Vendor Advisories for CVE-2026-46065(2)

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

Patch Availability(21)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntulinux-xilinx-zynqmp (6.8.0.1033.34) @ noble2026-09-14ubuntu
ubuntulinux-tools-raspi-realtime-6.8 (6.8.0-2050.52) @ noble2026-09-14ubuntu
ubuntulinux-tools-oem-7.0 (7.0.0-1008.8) @ resolute2026-09-14ubuntu
ubuntulinux-tools-raspi-realtime-7.0 (7.0.0-1014.14) @ resolute2026-09-14ubuntu
ubuntulinux-tools-nvidia-hwe-24.04-edge (7.0.0-1013.13) @ resolute2026-09-14ubuntu
ubuntulinux-virtual-6.8 (6.8.0-136.136) @ noble2026-09-14ubuntu
ubuntulinux-virtual-hwe-24.04-edge (7.0.0-28.28~24.04.1) @ noble2026-09-14ubuntu
ubuntulinux-tools-oracle-lts-24.04 (6.8.0-1058.61) @ noble2026-09-14ubuntu
ubuntulinux-tools-oracle-edge (6.8.0-1058.61~22.04.1) @ jammy2026-09-14ubuntu
ubuntulinux-tools-nvidia-lowlatency-64k-6.8 (6.8.0-1059.62.1) @ noble2026-09-14ubuntu
ubuntulinux-tools-azure-fde-7.0 (7.0.0-1009.9) @ resolute2026-09-14ubuntu
ubuntulinux-tools-aws-lts-24.04 (6.8.0-1061.64+1) @ noble2026-09-14ubuntu
ubuntulinux-tools-azure-lts-24.04 (6.8.0-1063.71) @ noble2026-09-14ubuntu
ubuntulinux-tools-azure-fde-lts-24.04 (6.8.0-1062.69) @ noble2026-09-14ubuntu
ubuntulinux-tools-azure-fips-6.8 (6.8.0-1063.71+fips2) @ noble2026-09-14ubuntu
ubuntulinux-tools-azure-fde-6.8 (6.8.0-1062.69~22.04.1) @ jammy2026-09-14ubuntu
ubuntulinux-tools-aws-fips-6.8 (6.8.0-1061.64+fips1) @ noble2026-09-14ubuntu
ubuntulinux-tools-gcp-fips-6.8 (6.8.0-1064.72+fips1) @ noble2026-09-14ubuntu
ubuntulinux-virtual-hwe-26.04-edge (7.0.0-27.27) @ resolute2026-09-14ubuntu
ubuntulinux-virtual-hwe-22.04-edge (6.8.0-136.136~22.04.1) @ jammy2026-09-14ubuntu
linuxKernel @ 5.15.210—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

(5 across 4 ecosystems)
Debian:11(2)
PackageVulnerable rangeFixed inDependents
linux5.10.103-1 ... 7.2~rc5-1~exp1 (496 versions)——
linux-6.16.1.106-3~deb11u1 ... 6.1.174-1~deb11u1 (20 versions)6.1.176-1~deb11u1—
Debian:12(1)
PackageVulnerable rangeFixed inDependents
linux6.1.106-1 ... 6.1.99-1 (53 versions)6.1.176-1—
Debian:13(1)
PackageVulnerable rangeFixed inDependents
linux6.12.38-1 ... 6.12.88-1~bpo12+1 (21 versions)6.12.88-1—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
linux6.12.100-1 ... 7.0.4-1~bpo13+1 (134 versions)7.0.4-1—

Weakness Classification(1)

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

Additional Vendor Advisories

(20)

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 8× in last 7d / 35× 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 295 total refreshes for this CVE.

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

Related CVEs(same product + same vendor + same CWE)

Frequently asked(5)

What is CVE-2026-46065?
CVE-2026-46065 is a high vulnerability published on May 27, 2026. In the Linux kernel, the following vulnerability has been resolved: fbdev: defio: Disconnect deferred I/O from the lifetime of struct fb_info Hold state of deferred I/O in struct fbdeferredio_state. Allocate an instance as part of initializing deferred I/O and remove it only after the final mapping…
When was CVE-2026-46065 disclosed?
CVE-2026-46065 was first published in the National Vulnerability Database on May 27, 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-2026-46065 actively exploited?
CVE-2026-46065 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 97.0% of all scored CVEs.
What is the CVSS score of CVE-2026-46065?
CVE-2026-46065 has a CVSS v4.0 base score of 7.8 (CNA self-assessment; NVD's own analysis pending).
How do I remediate CVE-2026-46065?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-46065, 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-2026-46065

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