CVE-2026-46100

HIGHPre-NVD 7.87.8—
EchelonGraph scoreMEDIUM confidence

Score 7.8 from GitHub Security Advisory (severity: HIGH) published 2026-05-27. a secondary CVSS source baseline 7.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 4 sources updated this week
7.8
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 7.8Exploit: NoneExposed: 0

A fix is available — apply it.

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

fs: afs: revert mmap_prepare() change

Partially reverts commit 9d5403b1036c ("fs: convert most other generic_file_*mmap() users to .mmap_prepare()").

This is because the .mmap invocation establishes a refcount, but .mmap_prepare is called at a point where a merge or an allocation failure might happen after the call, which would leak the refcount increment.

Functionality is being added to permit the use of .mmap_prepare in this case, but in the interim, we need to fix this.

CVSS v3
7.8
EG Score
7.8(medium)
EPSS
2.7%
KEV
Not listed

Published

May 27, 2026

Last Modified

June 25, 2026

Advisory Details (3)

Auto-updated Jun 4, 2026
No patch confirmed yet.
generic

fs: afs: revert mmap_prepare() change - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/fbfc6578eaca12daa0c09df1e9ba7f2c657b49da
generic

fs: afs: revert mmap_prepare() change - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/f51f85c044809fbd39ac8ae07ac99bc43ce32bd5
generic

fs: afs: revert mmap_prepare() change - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/48c7a0eaeea41da17d1d84d2d7a4c40be122b246

Vendor Advisories for CVE-2026-46100(1)

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

Patch Availability(4)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntulinux-virtual-hwe-26.04-edge (7.0.0-27.27) @ resolute2026-07-11ubuntu
ubuntulinux-tools-oem-7.0 (7.0.0-1008.8) @ resolute2026-07-11ubuntu
ubuntulinux-tools-raspi-realtime-7.0 (7.0.0-1014.14) @ resolute2026-07-11ubuntu
ubuntulinux-tools-nvidia-hwe-24.04-edge (7.0.0-1013.13) @ resolute2026-07-11ubuntu

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.

All Vendor Advisories

(4)

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 10× in last 7d / 72× 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 167 total refreshes for this CVE.

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

Related CVEs(same vendor)

Frequently asked(5)

What is CVE-2026-46100?
CVE-2026-46100 is a high vulnerability published on May 27, 2026. In the Linux kernel, the following vulnerability has been resolved: fs: afs: revert mmap_prepare() change Partially reverts commit 9d5403b1036c ("fs: convert most other genericfile*mmap() users to .mmap_prepare()"). This is because the .mmap invocation establishes a refcount, but .mmap_prepare is…
When was CVE-2026-46100 disclosed?
CVE-2026-46100 was first published in the National Vulnerability Database on May 27, 2026, with the most recent update on June 25, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-46100 actively exploited?
CVE-2026-46100 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 2.7% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-46100?
CVE-2026-46100 has a CVSS v3 base score of 7.8 (NVD).
How do I remediate CVE-2026-46100?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-46100, 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

Explore the affected products and dependency analysis for CVE-2026-46100

Explore →

Is Your Infrastructure Affected by CVE-2026-46100?

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

Start Free Scan →Browse All CVEs