CVE-2026-53029

MEDIUMNVD 5.55.5—
EchelonGraph scoreMEDIUM confidence

Score 5.5 from GitHub Security Advisory published 2026-06-24. 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: 0.1%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/ntfs3: prevent uninitialized lcn caused by zero len

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

Since runs was not touched yet, run_lookup_entry() immediately fails and returns false, which makes the value of "*len" 0. Simultaneously, the new value and err value are also 0, causing the logic in attr_data_get_block_locked() to jump directly to ok, ultimately resulting in *lcn being triggered before it is set [1].

In ntfs_iomap_begin(), the check for a 0 value in clen is moved forward to before updating lcn to avoid this [1].

[1] BUG: KMSAN: uninit-value in ntfs_iomap_begin+0x8c0/0x1460 fs/ntfs3/inode.c:825 ntfs_iomap_begin+0x8c0/0x1460 fs/ntfs3/inode.c:825 iomap_iter+0x9b7/0x1540 fs/iomap/iter.c:110

Local variable lcn created at: ntfs_iomap_begin+0x15d/0x1460 fs/ntfs3/inode.c:786

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
0.1%
EPSS %ILE
3rd
KEV
Not listed

Published

June 24, 2026

Last Modified

July 15, 2026

Advisory Details (2)

Auto-updated Jul 16, 2026
Patch available.
generic

fs/ntfs3: prevent uninitialized lcn caused by zero len - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/e98266e823a1fa06fe6499df61aeaac2fd6f7a49
generic

fs/ntfs3: prevent uninitialized lcn caused by zero len - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/485f750cac3d8bdf5552a0e3d79ce5e3a03ece49

Vendor Advisories for CVE-2026-53029(1)

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

Patch Availability(10)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
ubuntulinux-tools-oracle-7.0 (7.0.0-1008.8) @ resolute2026-09-23ubuntu
ubuntulinux-virtual-hwe-26.04-edge (7.0.0-28.28) @ resolute2026-09-23ubuntu
ubuntulinux-tools-azure-fde-7.0 (7.0.0-1009.9) @ resolute2026-09-23ubuntu
ubuntulinux-tools-azure-edge (7.0.0-1014.14~24.04.1) @ noble2026-09-23ubuntu
ubuntulinux-tools-oem-7.0 (7.0.0-1009.9) @ resolute2026-09-23ubuntu
ubuntulinux-virtual-hwe-24.04-edge (7.0.0-28.28~24.04.1) @ noble2026-09-23ubuntu
ubuntulinux-tools-raspi-realtime-7.0 (7.0.0-1015.15) @ resolute2026-09-23ubuntu
ubuntulinux-tools-nvidia-hwe-24.04-edge (7.0.0-1016.16~24.04.1) @ noble2026-09-23ubuntu
ubuntulinux-tools-nvidia-hwe-26.04 (7.0.0-2016.16) @ resolute2026-09-23ubuntu
ubuntulinux-tools-gcp-edge (7.0.0-1011.11~24.04.1) @ noble2026-09-23ubuntu

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 ... 7.0.9-1~bpo13+1 (141 versions)
  • every version up to 7.0.10-1: fixed in 7.0.10-1
—

Weakness Classification(1)

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

All Vendor Advisories

(10)

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 7× in last 7d / 33× 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 208 total refreshes for this CVE.

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

Related CVEs(same vendor + same CWE)

Frequently asked(5)

What is CVE-2026-53029?
CVE-2026-53029 is a medium vulnerability published on June 24, 2026. In the Linux kernel, the following vulnerability has been resolved: fs/ntfs3: prevent uninitialized lcn caused by zero len syzbot reported a uninit-value in ntfsiomapbegin [1]. Since runs was not touched yet, runlookupentry() immediately fails and returns false, which makes the value of "*len" 0.…
When was CVE-2026-53029 disclosed?
CVE-2026-53029 was first published on June 24, 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-2026-53029 actively exploited?
CVE-2026-53029 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.1% probability of exploitation in the next 30 days (3rd percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-53029?
CVE-2026-53029 has a CVSS v3 base score of 5.5 (NVD).
How do I remediate CVE-2026-53029?
A fix for CVE-2026-53029 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-53029 are linked in the Vendor Advisories panel on this page.

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