CVE-2026-46054

HIGHPre-NVD 7.17.1—
EchelonGraph scoreMEDIUM confidence

Score 7.1 from GitHub Security Advisory (severity: HIGH) published 2026-05-27. a secondary CVSS source baseline 7.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 4 sources updated this week
7.1
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 7.1Exploit: NoneExposed: 0

A fix is available — apply it.

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

selinux: fix overlayfs mmap() and mprotect() access checks

The existing SELinux security model for overlayfs is to allow access if the current task is able to access the top level file (the "user" file) and the mounter's credentials are sufficient to access the lower level file (the "backing" file). Unfortunately, the current code does not properly enforce these access controls for both mmap() and mprotect() operations on overlayfs filesystems.

This patch makes use of the newly created security_mmap_backing_file() LSM hook to provide the missing backing file enforcement for mmap() operations, and leverages the backing file API and new LSM blob to provide the necessary information to properly enforce the mprotect() access controls.

CVSS v3
7.1
EG Score
7.1(medium)
EPSS
2.0%
KEV
Not listed

Published

May 27, 2026

Last Modified

July 15, 2026

Advisory Details (2)

Auto-updated Jun 11, 2026
No patch confirmed yet.
generic

selinux: fix overlayfs mmap() and mprotect() access checks - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/cd0e707a927a70cdfd8bc5a512a9719a87f5ed51
generic

selinux: fix overlayfs mmap() and mprotect() access checks - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/82544d36b1729153c8aeb179e84750f0c085d3b1

Vendor Advisories for CVE-2026-46054(6)

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

Patch Availability(8)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntulinux-tools-nvidia-hwe-24.04-edge (7.0.0-1013.13) @ resolute2026-07-11ubuntu
ubuntulinux-tools-raspi-realtime-7.0 (7.0.0-1014.14) @ resolute2026-07-11ubuntu
ubuntulinux-tools-oem-7.0 (7.0.0-1008.8) @ resolute2026-07-11ubuntu
ubuntulinux-virtual-hwe-26.04-edge (7.0.0-27.27) @ resolute2026-07-11ubuntu
redhatkernel-0:5.14.0-687.19.1.el9_82026-06-29redhat
redhatkernel-0:4.18.0-553.137.1.el8_102026-06-22redhat
redhatkernel-rt-0:4.18.0-553.137.1.rt7.478.el8_102026-06-22redhat
redhatkernel-0:6.12.0-211.22.1.el10_22026-06-11redhat

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.

Weakness Classification(1)

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

Additional Vendor Advisories

(4)

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 9× in last 7d / 82× 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 183 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. 2026-07-11 23:42 UTCEG score recompute
  6. 2026-07-11 23:42 UTCVendor advisory
  7. 2026-07-11 23:42 UTCGHSA enrichment
  8. 2026-07-11 08:27 UTCEPSS rescore
  9. 2026-07-09 19:10 UTCEPSS rescore
  10. 2026-07-08 23:51 UTCEG score recompute
  11. 2026-07-08 23:51 UTCVendor advisory
  12. 2026-07-08 23:51 UTCGHSA enrichment
  13. 2026-07-08 15:16 UTCEPSS rescore
  14. 2026-07-07 13:46 UTCEPSS rescore
  15. 2026-07-06 16:27 UTCEPSS rescore
  16. 2026-07-06 02:23 UTCEPSS rescore
  17. 2026-07-04 06:31 UTCEPSS rescore
  18. 2026-07-01 15:07 UTCEPSS rescore
  19. 2026-07-01 10:15 UTCEG score recompute
  20. 2026-07-01 10:15 UTCVendor advisory
  21. 2026-07-01 10:15 UTCGHSA enrichment
  22. 2026-06-30 23:22 UTCEPSS rescore
  23. 2026-06-30 03:21 UTCEG score recompute
  24. 2026-06-30 03:21 UTCVendor advisory
  25. 2026-06-30 03:21 UTCGHSA enrichment
Show 75 more
  1. 2026-06-29 14:20 UTCEG score recompute
  2. 2026-06-29 14:20 UTCVendor advisory
  3. 2026-06-29 14:20 UTCGHSA enrichment
  4. 2026-06-29 14:06 UTCEPSS rescore
  5. 2026-06-29 14:06 UTCEPSS rescore
  6. 2026-06-28 20:57 UTCEG score recompute
  7. 2026-06-28 20:57 UTCVendor advisory
  8. 2026-06-28 20:57 UTCGHSA enrichment
  9. 2026-06-28 14:07 UTCEPSS rescore
  10. 2026-06-28 07:26 UTCEG score recompute
  11. 2026-06-28 07:26 UTCVendor advisory
  12. 2026-06-28 07:26 UTCGHSA enrichment
  13. 2026-06-28 04:56 UTCEPSS rescore
  14. 2026-06-28 04:56 UTCEPSS rescore
  15. 2026-06-27 18:29 UTCEG score recompute
  16. 2026-06-27 18:29 UTCVendor advisory
  17. 2026-06-27 18:29 UTCGHSA enrichment
  18. 2026-06-27 05:52 UTCEG score recompute
  19. 2026-06-27 05:52 UTCVendor advisory
  20. 2026-06-27 05:51 UTCGHSA enrichment
  21. 2026-06-27 03:08 UTCEPSS rescore
  22. 2026-06-26 17:07 UTCEG score recompute
  23. 2026-06-26 17:07 UTCVendor advisory
  24. 2026-06-26 17:06 UTCGHSA enrichment
  25. 2026-06-26 02:27 UTCEG score recompute
  26. 2026-06-26 02:27 UTCVendor advisory
  27. 2026-06-26 02:27 UTCGHSA enrichment
  28. 2026-06-25 13:49 UTCEPSS rescore
  29. 2026-06-25 13:41 UTCEG score recompute
  30. 2026-06-25 13:41 UTCVendor advisory
  31. 2026-06-25 13:41 UTCGHSA enrichment
  32. 2026-06-25 01:07 UTCEG score recompute
  33. 2026-06-25 01:07 UTCVendor advisory
  34. 2026-06-25 01:07 UTCGHSA enrichment
  35. 2026-06-24 14:05 UTCEPSS rescore
  36. 2026-06-23 21:33 UTCEPSS rescore
  37. 2026-06-23 21:33 UTCEPSS rescore
  38. 2026-06-22 14:25 UTCEPSS rescore
  39. 2026-06-22 14:25 UTCEPSS rescore
  40. 2026-06-21 14:56 UTCEPSS rescore
  41. 2026-06-21 14:56 UTCEPSS rescore
  42. 2026-06-21 01:59 UTCEPSS rescore
  43. 2026-06-21 01:59 UTCEPSS rescore
  44. 2026-06-19 19:26 UTCEPSS rescore
  45. 2026-06-19 19:26 UTCEPSS rescore
  46. 2026-06-18 17:52 UTCEPSS rescore
  47. 2026-06-18 17:52 UTCEPSS rescore
  48. 2026-06-18 01:40 UTCEG score recompute
  49. 2026-06-18 01:40 UTCVendor advisory
  50. 2026-06-18 01:40 UTCGHSA enrichment
  51. 2026-06-17 17:53 UTCEPSS rescore
  52. 2026-06-17 11:59 UTCEG score recompute
  53. 2026-06-17 11:59 UTCVendor advisory
  54. 2026-06-17 11:59 UTCGHSA enrichment
  55. 2026-06-16 23:25 UTCEG score recompute
  56. 2026-06-16 23:25 UTCVendor advisory
  57. 2026-06-16 23:25 UTCGHSA enrichment
  58. 2026-06-16 10:52 UTCEG score recompute
  59. 2026-06-16 10:52 UTCVendor advisory
  60. 2026-06-16 10:51 UTCGHSA enrichment
  61. 2026-06-15 22:18 UTCEG score recompute
  62. 2026-06-15 22:18 UTCVendor advisory
  63. 2026-06-15 22:18 UTCGHSA enrichment
  64. 2026-06-15 17:49 UTCEPSS rescore
  65. 2026-06-15 04:50 UTCEG score recompute
  66. 2026-06-15 04:50 UTCVendor advisory
  67. 2026-06-15 04:50 UTCGHSA enrichment
  68. 2026-06-14 16:17 UTCEG score recompute
  69. 2026-06-14 16:17 UTCVendor advisory
  70. 2026-06-14 16:17 UTCGHSA enrichment
  71. 2026-06-14 03:37 UTCEG score recompute
  72. 2026-06-14 03:37 UTCVendor advisory
  73. 2026-06-14 03:37 UTCGHSA enrichment
  74. 2026-06-13 23:00 UTCEPSS rescore
  75. 2026-06-13 15:03 UTCEG score recompute

Frequently asked(5)

What is CVE-2026-46054?
CVE-2026-46054 is a high vulnerability published on May 27, 2026. In the Linux kernel, the following vulnerability has been resolved: selinux: fix overlayfs mmap() and mprotect() access checks The existing SELinux security model for overlayfs is to allow access if the current task is able to access the top level file (the "user" file) and the mounter's…
When was CVE-2026-46054 disclosed?
CVE-2026-46054 was first published in the National Vulnerability Database on May 27, 2026, with the most recent update on July 15, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-46054 actively exploited?
CVE-2026-46054 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 2.0% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-46054?
CVE-2026-46054 has a CVSS v3 base score of 7.1 (NVD).
How do I remediate CVE-2026-46054?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-46054, 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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