CVE-2026-43474

MEDIUMNVD 5.55.5—
EchelonGraph scoreMEDIUM confidence

Score 5.5 from GitHub Security Advisory published 2026-05-08. NVD baseline CVSS 5.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
5.5EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.2%CVSS: 5.5Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

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

fs: init flags_valid before calling vfs_fileattr_get

syzbot reported a uninit-value bug in [1].

Similar to the "*get" context where the kernel's internal file_kattr structure is initialized before calling vfs_fileattr_get(), we should use the same mechanism when using fa.

[1] BUG: KMSAN: uninit-value in fuse_fileattr_get+0xeb4/0x1450 fs/fuse/ioctl.c:517 fuse_fileattr_get+0xeb4/0x1450 fs/fuse/ioctl.c:517 vfs_fileattr_get fs/file_attr.c:94 [inline] __do_sys_file_getattr fs/file_attr.c:416 [inline]

Local variable fa.i created at: __do_sys_file_getattr fs/file_attr.c:380 [inline] __se_sys_file_getattr+0x8c/0xbd0 fs/file_attr.c:372

CVSS v3
5.5
EG Score
5.5MEDIUMmedium confidence
EG Risk
29
EG Risk 29/100

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
Severity55% × 45%
Exploitation0% × 40%
Automatability30% × 15%
EPSS PROB
0.2%
EPSS %ILE
4th
KEV
Not listed

Published

May 8, 2026

Last Modified

May 21, 2026

Advisory Details (3)

Auto-updated Jun 16, 2026
Patch available.
generic

fs: init flags_valid before calling vfs_fileattr_get - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/cb184dd19154fc486fa3d9e02afe70a97e54e055
generic

fs: init flags_valid before calling vfs_fileattr_get - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/b8c182b2c8c44c6016b11d8af61715ad7ef958a1
generic

fs: init flags_valid before calling vfs_fileattr_get - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/379e19e820dd1c6145426b97467728b3b89c0b42

Vendor Advisories for CVE-2026-43474(2)

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

Patch Availability(1)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
linuxKernel @ 6.18.19 (fixes >=6.17.0)—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

(1 across 1 ecosystem)
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
linux6.12.100-1 ... 6.19~rc8-1~exp1 (123 versions)
  • every version up to 6.19.10-1: fixed in 6.19.10-1
—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 7× in last 7d / 23× in last 30d)

Each row is a time one of our pipelines fetched, updated or re-scored this CVE. 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. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.

Showing the most recent 100 of 199 refreshes on record for this CVE.

A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. None are among the latest 100 rows. The 99 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.2% · 4th percentile
  2. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.2% · 4th percentile
  3. 2026-10-08 17:12 UTCEPSS rescoreEPSS 0.2% · 4th percentile
  4. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.2% · 4th percentile
  5. 2026-10-06 15:17 UTCEPSS rescoreEPSS 0.2% · 4th percentile
  6. 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.2% · 4th percentile
  7. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.2% · 4th percentile
  8. 2026-10-03 14:25 UTCEPSS rescoreEPSS 0.2% · 4th percentile
  9. 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.2% · 4th percentile
  10. 2026-09-30 15:03 UTCEPSS rescoreEPSS 0.2% · 4th percentile
  11. 2026-09-30 07:58 UTCOSV refresh
  12. 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.2% · 4th percentile
  13. 2026-09-26 15:58 UTCEPSS rescoreEPSS 0.2% · 4th percentile
  14. 2026-09-23 17:53 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  15. 2026-09-20 20:15 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  16. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  17. 2026-09-17 19:31 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  18. 2026-09-16 14:08 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  19. 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  20. 2026-09-13 16:47 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  21. 2026-09-12 15:01 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  22. 2026-09-11 14:53 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  23. 2026-09-11 14:23 UTCOSV refresh
  24. 2026-09-10 09:34 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  25. 2026-09-08 22:00 UTCEPSS rescoreEPSS 0.1% · 1st percentile
Show 75 more
  1. 2026-09-07 16:01 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  2. 2026-09-06 13:47 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  3. 2026-09-04 05:06 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  4. 2026-09-02 14:12 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  5. 2026-09-01 13:54 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  6. 2026-08-30 19:17 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  7. 2026-08-28 21:41 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  8. 2026-08-27 14:25 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  9. 2026-08-26 14:46 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  10. 2026-08-25 13:49 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  11. 2026-08-23 19:00 UTCEG score recompute
  12. 2026-08-23 19:00 UTCVendor advisory
  13. 2026-08-23 19:00 UTCGHSA enrichmentGHSA-5h27-3wgq-g9cf · GitHub CVSS 5.5
  14. 2026-08-23 00:19 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  15. 2026-08-21 23:49 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  16. 2026-08-20 22:55 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  17. 2026-08-19 17:04 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  18. 2026-08-18 13:48 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  19. 2026-08-17 11:30 UTCEG score recompute
  20. 2026-08-17 11:30 UTCVendor advisory
  21. 2026-08-17 11:30 UTCGHSA enrichmentGHSA-5h27-3wgq-g9cf · GitHub CVSS 5.5
  22. 2026-08-16 14:56 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  23. 2026-08-16 04:33 UTCEG score recompute
  24. 2026-08-16 04:33 UTCVendor advisory
  25. 2026-08-16 04:33 UTCGHSA enrichmentGHSA-5h27-3wgq-g9cf · GitHub CVSS 5.5
  26. 2026-08-16 02:14 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  27. 2026-08-14 03:07 UTCEG score recompute
  28. 2026-08-14 03:07 UTCVendor advisory
  29. 2026-08-14 03:07 UTCGHSA enrichmentGHSA-5h27-3wgq-g9cf · GitHub CVSS 5.5
  30. 2026-08-13 22:00 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  31. 2026-08-12 16:43 UTCEG score recompute
  32. 2026-08-12 16:43 UTCVendor advisory
  33. 2026-08-12 16:43 UTCGHSA enrichmentGHSA-5h27-3wgq-g9cf · GitHub CVSS 5.5
  34. 2026-08-12 13:51 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  35. 2026-08-11 13:43 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  36. 2026-08-11 09:07 UTCVendor advisory
  37. 2026-08-11 09:07 UTCGHSA enrichmentGHSA-5h27-3wgq-g9cf · GitHub CVSS 5.5
  38. 2026-08-10 07:16 UTCEG score recompute
  39. 2026-08-10 07:16 UTCVendor advisory
  40. 2026-08-10 07:16 UTCGHSA enrichmentGHSA-5h27-3wgq-g9cf · GitHub CVSS 5.5
  41. 2026-08-09 13:46 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  42. 2026-08-09 05:25 UTCEG score recompute
  43. 2026-08-09 05:25 UTCGHSA enrichmentGHSA-5h27-3wgq-g9cf · GitHub CVSS 5.5
  44. 2026-08-08 16:37 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  45. 2026-08-08 03:34 UTCEG score recompute
  46. 2026-08-08 03:34 UTCVendor advisory
  47. 2026-08-08 03:34 UTCGHSA enrichmentGHSA-5h27-3wgq-g9cf · GitHub CVSS 5.5
  48. 2026-08-07 01:43 UTCEG score recompute
  49. 2026-08-07 01:43 UTCVendor advisory
  50. 2026-08-07 01:43 UTCGHSA enrichmentGHSA-5h27-3wgq-g9cf · GitHub CVSS 5.5
  51. 2026-08-06 13:46 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  52. 2026-08-05 22:07 UTCEG score recompute
  53. 2026-08-05 22:07 UTCVendor advisory
  54. 2026-08-05 22:07 UTCGHSA enrichmentGHSA-5h27-3wgq-g9cf · GitHub CVSS 5.5
  55. 2026-08-05 19:17 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  56. 2026-08-04 15:10 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  57. 2026-08-04 10:38 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  58. 2026-08-03 10:36 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  59. 2026-08-03 04:32 UTCVendor advisory
  60. 2026-08-03 04:32 UTCGHSA enrichmentGHSA-5h27-3wgq-g9cf · GitHub CVSS 5.5
  61. 2026-08-02 02:40 UTCEG score recompute
  62. 2026-08-02 02:40 UTCVendor advisory
  63. 2026-08-02 02:40 UTCGHSA enrichmentGHSA-5h27-3wgq-g9cf · GitHub CVSS 5.5
  64. 2026-08-02 02:27 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  65. 2026-08-01 04:16 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  66. 2026-07-30 16:28 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  67. 2026-07-30 01:30 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  68. 2026-07-28 15:36 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  69. 2026-07-27 14:13 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  70. 2026-07-25 14:18 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  71. 2026-07-24 14:17 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  72. 2026-07-23 03:14 UTCEG score recompute
  73. 2026-07-21 15:24 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  74. 2026-07-20 17:08 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  75. 2026-07-19 14:31 UTCEPSS rescoreEPSS 0.1% · 1st percentile

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Frequently asked(5)

What is CVE-2026-43474?
CVE-2026-43474 is a medium vulnerability published on May 8, 2026. In the Linux kernel, the following vulnerability has been resolved: fs: init flagsvalid before calling vfsfileattr_get syzbot reported a uninit-value bug in [1]. Similar to the "*get" context where the kernel's internal file_kattr structure is initialized before calling vfsfileattrget(), we should…
When was the CVE record for CVE-2026-43474 published?
The CVE record for CVE-2026-43474 was published on May 8, 2026. That is the record's publication date; the vulnerability itself may have been made public earlier. EchelonGraph's copy of the record carries a last-modified date of May 21, 2026; the record at its source may have been updated since.
Is CVE-2026-43474 actively exploited?
CVE-2026-43474 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.2% probability of exploitation in the next 30 days (4th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-43474?
CVE-2026-43474 has a CVSS v3 base score of 5.5 (NVD).
How do I remediate CVE-2026-43474?
A fix for CVE-2026-43474 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-43474 are linked in the Vendor Advisories panel on this page.

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