CVE-2026-52992

HIGHNVD 7.87.8—
EchelonGraph scoreMEDIUM confidence

Score 7.8 from GitHub Security Advisory (severity: HIGH) published 2026-06-24. NVD baseline CVSS 7.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
7.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.8Exploit: None knownExposed: 0

A fix is available — apply it.

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

fs/adfs: validate nzones in adfs_validate_bblk()

Reject ADFS disc records with a zero zone count during boot block validation, before the disc record is used.

When nzones is 0, adfs_read_map() passes it to kmalloc_array(0, ...) which returns ZERO_SIZE_PTR, and adfs_map_layout() then writes to dm[-1], causing an out-of-bounds write before the allocated buffer.

adfs_validate_dr0() already rejects nzones != 1 for old-format images. Add the equivalent check to adfs_validate_bblk() for new-format images so that a crafted image with nzones == 0 is rejected at probe time.

Found by syzkaller.

CVSS v3
7.8
EG Score
7.8(medium)
EG Risk
40(Track)
EG Risk 40/100SSVC: 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
Severity78% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
4%
KEV
Not listed

Published

June 24, 2026

Last Modified

July 14, 2026

Advisory Details (8)

Auto-updated Jul 15, 2026
No patch confirmed yet.
generic

fs/adfs: validate nzones in adfs_validate_bblk() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/dd9d3e16c2d5fa166e13dce07413be51f42c8f5d
generic

fs/adfs: validate nzones in adfs_validate_bblk() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/a3fd5dc1c7b0aae947a67dc2e2c037d57557a4de
generic

fs/adfs: validate nzones in adfs_validate_bblk() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/a11372a8b1ceaa5e950a84b3b5fbf8228f25e277
generic

fs/adfs: validate nzones in adfs_validate_bblk() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/6ff8cca5cdb4f2e0ea6d28ecd78479dd3f221ebc
generic

fs/adfs: validate nzones in adfs_validate_bblk() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/60d82592ac8b5637fbed871381eb0a16df0a492e
generic

fs/adfs: validate nzones in adfs_validate_bblk() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/33aafd2418a59c96c0389d47ea09026661fa9ec6
generic

fs/adfs: validate nzones in adfs_validate_bblk() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/1f0ed0f57f0fc87e46fe19a05435c214dc464be2
generic

fs/adfs: validate nzones in adfs_validate_bblk() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/1586bd2d2fb436a26df20a70e78b000d34a7d159

Vendor Advisories for CVE-2026-52992(2)

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

Patch Availability(30)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntulinux-virtual-hwe-26.04-edge (7.0.0-28.28) @ resolute2026-08-30ubuntu
ubuntulinux-virtual-6.8 (6.8.0-136.136) @ noble2026-08-30ubuntu
ubuntulinux-tools-raspi-realtime-6.8 (6.8.0-2050.52) @ noble2026-08-30ubuntu
ubuntulinux-virtual-hwe-24.04-edge (7.0.0-28.28~24.04.1) @ noble2026-08-30ubuntu
ubuntulinux-tools-gcp-fips-6.8 (6.8.0-1064.72+fips1) @ noble2026-08-30ubuntu
ubuntulinux-xilinx-zynqmp-tools-5.15.0-1075 (5.15.0-1075.79) @ jammy2026-08-30ubuntu
ubuntulinux-tools-nvidia-tegra-rt-5.15 (5.15.0.1064.66~20.04.1) @ focal2026-08-30ubuntu
ubuntulinux-tools-oracle-7.0 (7.0.0-1008.8) @ resolute2026-08-30ubuntu
ubuntulinux-tools-oracle-lts-24.04 (6.8.0-1058.61) @ noble2026-08-30ubuntu
ubuntulinux-tools-oracle-edge (6.8.0-1058.61~22.04.1) @ jammy2026-08-30ubuntu
ubuntulinux-tools-nvidia-lowlatency-64k-6.8 (6.8.0-1059.62.1) @ noble2026-08-30ubuntu
ubuntulinux-tools-nvidia-lowlatency-5.15 (5.15.0.1107.107) @ jammy2026-08-30ubuntu
ubuntulinux-tools-nvidia-tegra-rt-5.15 (5.15.0.1064.64) @ jammy2026-08-30ubuntu
ubuntulinux-tools-azure-fde-7.0 (7.0.0-1009.9) @ resolute2026-08-30ubuntu
ubuntulinux-tools-aws-lts-24.04 (6.8.0-1061.64+1) @ noble2026-08-30ubuntu
ubuntulinux-tools-azure-lts-24.04 (6.8.0-1063.71) @ noble2026-08-30ubuntu
ubuntulinux-tools-azure-fde-lts-24.04 (6.8.0-1062.69) @ noble2026-08-30ubuntu
ubuntulinux-tools-azure-fips-6.8 (6.8.0-1063.71+fips2) @ noble2026-08-30ubuntu
ubuntulinux-tools-azure-fde-6.8 (6.8.0-1062.69~22.04.1) @ jammy2026-08-30ubuntu
ubuntulinux-tools-oracle-lts-22.04 (5.15.0.1109.105) @ jammy2026-08-30ubuntu
ubuntulinux-tools-azure-fde-lts-22.04 (5.15.0.1117.126) @ jammy2026-08-30ubuntu
ubuntulinux-tools-oem-7.0 (7.0.0-1009.9) @ resolute2026-08-30ubuntu
ubuntulinux-tools-raspi-realtime-7.0 (7.0.0-1015.15) @ resolute2026-08-30ubuntu
ubuntulinux-tools-aws-fips-6.8 (6.8.0-1061.64+fips1) @ noble2026-08-30ubuntu
ubuntulinux-tools-ibm-edge (6.8.0-1061.62~22.04.1) @ jammy2026-08-30ubuntu
ubuntulinux-virtual-hwe-22.04-edge (6.8.0-136.136~22.04.1) @ jammy2026-08-30ubuntu
ubuntulinux-tools-oracle-edge (5.15.0.1109.115~20.04.1) @ focal2026-08-30ubuntu
ubuntulinux-tools-azure-fips-5.15 (5.15.0.1117.102) @ jammy2026-08-30ubuntu
ubuntulinux-tools-intel-iot-realtime-5.15 (5.15.0.1104.108) @ jammy2026-08-30ubuntu
ubuntulinux-tools-intel-iotg-5.15 (5.15.0.1107.106) @ jammy2026-08-30ubuntu

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

(5 across 4 ecosystems)
Debian:11(2)
PackageVulnerable rangeFixed inDependents
linux5.10.103-1 ... 5.10.92-2 (54 versions)5.10.259-1—
linux-6.16.1.106-3~deb11u1 ... 6.1.174-1~deb11u1 (20 versions)6.1.176-1~deb11u1—
Debian:12(1)
PackageVulnerable rangeFixed inDependents
linux6.1.106-1 ... 6.1.99-1 (53 versions)6.1.176-1—
Debian:13(1)
PackageVulnerable rangeFixed inDependents
linux6.12.38-1 ... 6.12.94-1~bpo12+1 (27 versions)6.12.94-1—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
linux6.12.100-1 ... 7.0.9-1~bpo13+1 (140 versions)7.0.10-1—

Weakness Classification(1)

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

All Vendor Advisories

(25)

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 5× in last 7d / 84× 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 235 total refreshes for this CVE.

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

Related CVEs(same vendor + same CWE)

Frequently asked(5)

What is CVE-2026-52992?
CVE-2026-52992 is a high vulnerability published on June 24, 2026. In the Linux kernel, the following vulnerability has been resolved: fs/adfs: validate nzones in adfsvalidatebblk() Reject ADFS disc records with a zero zone count during boot block validation, before the disc record is used. When nzones is 0, adfsreadmap() passes it to kmalloc_array(0, ...) which…
When was CVE-2026-52992 disclosed?
CVE-2026-52992 was first published in the National Vulnerability Database on June 24, 2026, with the most recent update on July 14, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-52992 actively exploited?
CVE-2026-52992 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 96.4% of all scored CVEs.
What is the CVSS score of CVE-2026-52992?
CVE-2026-52992 has a CVSS v3 base score of 7.8 (NVD).
How do I remediate CVE-2026-52992?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-52992, 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

See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-52992

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