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 — Patch released this week
7.1EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.1Exploit: None knownExposed: 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)
EG Risk
36(Track)
EG Risk 36/100SSVC: 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
Severity71% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
2%
KEV
Not listed

Published

May 27, 2026

Last Modified

September 16, 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(13)

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

Patch Availability(18)

Vendor / EcosystemFixed in / PatchReleasedSource
redhatkernel-rt-0:5.14.0-284.191.1.rt14.476.el9_22026-09-16redhat
redhatkernel-0:5.14.0-284.191.1.el9_22026-09-16redhat
ubuntulinux-tools-azure-fde-7.0 (7.0.0-1009.9) @ resolute2026-09-16ubuntu
ubuntulinux-virtual-hwe-26.04-edge (7.0.0-27.27) @ resolute2026-09-16ubuntu
ubuntulinux-tools-raspi-realtime-7.0 (7.0.0-1014.14) @ resolute2026-09-16ubuntu
ubuntulinux-tools-nvidia-hwe-24.04-edge (7.0.0-1013.13) @ resolute2026-09-16ubuntu
ubuntulinux-tools-oem-7.0 (7.0.0-1008.8) @ resolute2026-09-16ubuntu
ubuntulinux-virtual-hwe-24.04-edge (7.0.0-28.28~24.04.1) @ noble2026-09-16ubuntu
redhatkernel-0:4.18.0-372.208.1.el8_62026-08-25redhat
redhatkernel-0:4.18.0-305.201.1.el8_42026-08-24redhat
redhatkernel-0:4.18.0-477.158.1.el8_82026-08-10redhat
redhatkernel-0:5.14.0-570.132.1.el9_62026-08-10redhat
redhatkernel-0:6.12.0-55.95.1.el10_02026-08-10redhat
redhatkernel-0:5.14.0-427.143.1.el9_42026-08-07redhat
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.

Affected Packages

(4 across 4 ecosystems)
Debian:11(1)
PackageVulnerable rangeFixed inDependents
linux5.10.103-1 ... 7.2~rc5-1~exp1 (496 versions)——
Debian:12(1)
PackageVulnerable rangeFixed inDependents
linux6.1.106-1 ... 7.2~rc7-1~exp1 (350 versions)——
Debian:13(1)
PackageVulnerable rangeFixed inDependents
linux6.12.38-1 ... 6.12.95-1~bpo12+1 (29 versions)6.12.95-1—
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

(7)

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 18× 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 311 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 13:43 UTCEG score recompute
  5. 2026-09-16 13:43 UTCVendor advisory
  6. 2026-09-16 13:43 UTCGHSA enrichment
  7. 2026-09-16 12:21 UTCEG score recompute
  8. 2026-09-16 12:21 UTCVendor advisory
  9. 2026-09-16 12:21 UTCGHSA enrichment
  10. 2026-09-16 05:15 UTCEPSS rescore
  11. 2026-09-15 12:13 UTCEG score recompute
  12. 2026-09-15 12:13 UTCVendor advisory
  13. 2026-09-15 12:13 UTCGHSA enrichment
  14. 2026-09-14 08:00 UTCEG score recompute
  15. 2026-09-14 08:00 UTCVendor advisory
  16. 2026-09-14 07:59 UTCGHSA enrichment
  17. 2026-09-13 16:47 UTCEPSS rescore
  18. 2026-09-12 15:01 UTCEPSS rescore
  19. 2026-09-11 14:53 UTCEPSS rescore
  20. 2026-09-11 09:37 UTCEPSS rescore
  21. 2026-09-10 09:34 UTCEPSS rescore
  22. 2026-09-08 22:00 UTCEPSS rescore
  23. 2026-09-07 16:01 UTCEPSS rescore
  24. 2026-09-06 13:47 UTCEPSS rescore
  25. 2026-09-04 05:06 UTCEPSS rescore
Show 75 more
  1. 2026-09-02 14:12 UTCEPSS rescore
  2. 2026-09-01 13:54 UTCEPSS rescore
  3. 2026-08-30 19:17 UTCEPSS rescore
  4. 2026-08-30 01:22 UTCEPSS rescore
  5. 2026-08-28 21:41 UTCEPSS rescore
  6. 2026-08-27 14:25 UTCEPSS rescore
  7. 2026-08-26 16:24 UTCEG score recompute
  8. 2026-08-26 16:24 UTCVendor advisory
  9. 2026-08-26 16:23 UTCGHSA enrichment
  10. 2026-08-26 12:20 UTCEG score recompute
  11. 2026-08-26 12:20 UTCVendor advisory
  12. 2026-08-26 12:20 UTCGHSA enrichment
  13. 2026-08-25 13:49 UTCEPSS rescore
  14. 2026-08-25 13:23 UTCEG score recompute
  15. 2026-08-25 13:23 UTCVendor advisory
  16. 2026-08-25 13:23 UTCGHSA enrichment
  17. 2026-08-25 12:19 UTCEG score recompute
  18. 2026-08-25 12:19 UTCVendor advisory
  19. 2026-08-25 12:19 UTCGHSA enrichment
  20. 2026-08-25 05:24 UTCEG score recompute
  21. 2026-08-25 05:24 UTCVendor advisory
  22. 2026-08-25 05:23 UTCGHSA enrichment
  23. 2026-08-23 15:09 UTCEG score recompute
  24. 2026-08-23 15:09 UTCVendor advisory
  25. 2026-08-23 15:09 UTCGHSA enrichment
  26. 2026-08-21 23:49 UTCEPSS rescore
  27. 2026-08-21 20:39 UTCVendor advisory
  28. 2026-08-21 20:39 UTCGHSA enrichment
  29. 2026-08-21 01:38 UTCEG score recompute
  30. 2026-08-21 01:38 UTCVendor advisory
  31. 2026-08-21 01:38 UTCGHSA enrichment
  32. 2026-08-20 22:55 UTCEPSS rescore
  33. 2026-08-20 11:25 UTCEG score recompute
  34. 2026-08-20 11:25 UTCVendor advisory
  35. 2026-08-20 11:24 UTCGHSA enrichment
  36. 2026-08-19 17:04 UTCEPSS rescore
  37. 2026-08-18 13:48 UTCEPSS rescore
  38. 2026-08-17 13:47 UTCEPSS rescore
  39. 2026-08-17 09:18 UTCVendor advisory
  40. 2026-08-17 09:18 UTCGHSA enrichment
  41. 2026-08-16 15:30 UTCEG score recompute
  42. 2026-08-16 15:30 UTCVendor advisory
  43. 2026-08-16 15:30 UTCGHSA enrichment
  44. 2026-08-16 14:56 UTCEPSS rescore
  45. 2026-08-16 02:51 UTCEG score recompute
  46. 2026-08-16 02:51 UTCVendor advisory
  47. 2026-08-16 02:51 UTCGHSA enrichment
  48. 2026-08-16 02:14 UTCEPSS rescore
  49. 2026-08-15 02:56 UTCEG score recompute
  50. 2026-08-15 02:56 UTCVendor advisory
  51. 2026-08-15 02:56 UTCGHSA enrichment
  52. 2026-08-15 01:30 UTCEPSS rescore
  53. 2026-08-14 14:01 UTCVendor advisory
  54. 2026-08-14 14:01 UTCGHSA enrichment
  55. 2026-08-14 01:28 UTCEG score recompute
  56. 2026-08-14 01:28 UTCVendor advisory
  57. 2026-08-14 01:28 UTCGHSA enrichment
  58. 2026-08-13 22:00 UTCEPSS rescore
  59. 2026-08-13 04:29 UTCVendor advisory
  60. 2026-08-13 04:29 UTCGHSA enrichment
  61. 2026-08-12 15:56 UTCEG score recompute
  62. 2026-08-12 15:56 UTCVendor advisory
  63. 2026-08-12 15:56 UTCGHSA enrichment
  64. 2026-08-12 13:51 UTCEPSS rescore
  65. 2026-08-12 03:22 UTCVendor advisory
  66. 2026-08-12 03:22 UTCGHSA enrichment
  67. 2026-08-11 14:30 UTCEG score recompute
  68. 2026-08-11 14:30 UTCVendor advisory
  69. 2026-08-11 14:30 UTCGHSA enrichment
  70. 2026-08-11 01:57 UTCEG score recompute
  71. 2026-08-11 01:57 UTCVendor advisory
  72. 2026-08-11 01:56 UTCGHSA enrichment
  73. 2026-08-11 00:00 UTCEPSS rescore
  74. 2026-08-10 13:23 UTCEG score recompute
  75. 2026-08-10 13:23 UTCVendor advisory

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 September 16, 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 0% probability of exploitation in the next 30 days, which ranks it in the top 97.6% of all scored CVEs.
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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