CVE-2026-53130

HIGHPre-NVD 7.87.8—
EchelonGraph scoreMEDIUM confidence

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

Triggered by: GitHub Security Advisory CVSS
Sources: cna:linux, epss, ghsa
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/omfs: reject s_sys_blocksize smaller than OMFS_DIR_START

omfs_fill_super() rejects oversized s_sys_blocksize values (> PAGE_SIZE), but it does not reject values smaller than OMFS_DIR_START (0x1b8 = 440).

Later, omfs_make_empty() uses

sbi->s_sys_blocksize - OMFS_DIR_START

as the length argument to memset(). Since s_sys_blocksize is u32, a crafted filesystem image with s_sys_blocksize < OMFS_DIR_START causes an unsigned underflow there, wrapping to a value near 2^32. That drives a ~4 GiB memset() from bh->b_data + OMFS_DIR_START and overwrites kernel memory far beyond the backing block buffer.

Add the corresponding lower-bound check alongside the existing upper-bound check in omfs_fill_super(), so that malformed images are rejected during superblock validation before any filesystem data is processed.

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
3%
KEV
Not listed

Published

June 24, 2026

Last Modified

August 5, 2026

Advisory Details (8)

Auto-updated Jun 28, 2026
No patch confirmed yet.
generic

fs/omfs: reject s_sys_blocksize smaller than OMFS_DIR_START - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/fbc72f5c645155dc2ed3573243ed20f9913e3a54
generic

fs/omfs: reject s_sys_blocksize smaller than OMFS_DIR_START - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/817f16ed62bc58a168417bfb5e859c2a370bab03
generic

fs/omfs: reject s_sys_blocksize smaller than OMFS_DIR_START - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/79f84af38c9fef9deb0e02c79eb969b5541c2644
generic

fs/omfs: reject s_sys_blocksize smaller than OMFS_DIR_START - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/754ff1bea3819a90c6f33cccfc1a299ef7609f07
generic

fs/omfs: reject s_sys_blocksize smaller than OMFS_DIR_START - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/6561afc38398e3518a29c5eebb975c30468f98a6
generic

fs/omfs: reject s_sys_blocksize smaller than OMFS_DIR_START - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/5822a05a841a10794ad818620dd2af490b0705d3
generic

fs/omfs: reject s_sys_blocksize smaller than OMFS_DIR_START - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/131ea3e57fc22936ed0e2c8330f2e36106172f51
generic

fs/omfs: reject s_sys_blocksize smaller than OMFS_DIR_START - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/0621c385fda1376e967f37ccd534c26c3e511d14

Vendor Advisories for CVE-2026-53130(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-tools-azure-edge (6.8.0-1063.71~22.04.1) @ jammy2026-08-30ubuntu
ubuntulinux-virtual-6.8 (6.8.0-136.136) @ 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-hwe-22.04-edge (6.8.0-1059.62~22.04.1) @ jammy2026-08-30ubuntu
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-fde-lts-24.04 (6.8.0-1062.69) @ 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-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
ubuntulinux-tools-raspi-realtime-6.8 (6.8.0-2050.52) @ noble2026-08-30ubuntu
ubuntulinux-tools-nvidia-hwe-24.04-edge (7.0.0-1016.16) @ resolute2026-08-30ubuntu
ubuntulinux-tools-nvidia-hwe-26.04 (7.0.0-2016.16) @ resolute2026-08-30ubuntu
ubuntulinux-tools-gcp-edge (5.15.0.1112.122~20.04.1) @ focal2026-08-30ubuntu

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 / 80× 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 250 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 19:52 UTCEG score recompute
  11. 2026-08-30 19:52 UTCVendor advisory
  12. 2026-08-30 19:51 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 03:41 UTCEG score recompute
  17. 2026-08-28 03:41 UTCVendor advisory
  18. 2026-08-28 03:40 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 21:54 UTCEG score recompute
  23. 2026-08-24 21:54 UTCVendor advisory
  24. 2026-08-24 21:54 UTCGHSA enrichment
  25. 2026-08-24 04:35 UTCVendor advisory
Show 75 more
  1. 2026-08-24 04:34 UTCGHSA enrichment
  2. 2026-08-23 15:14 UTCVendor advisory
  3. 2026-08-23 15:13 UTCGHSA enrichment
  4. 2026-08-23 02:04 UTCEG score recompute
  5. 2026-08-23 02:04 UTCVendor advisory
  6. 2026-08-23 02:03 UTCGHSA enrichment
  7. 2026-08-23 00:19 UTCEPSS rescore
  8. 2026-08-22 12:48 UTCEG score recompute
  9. 2026-08-22 12:48 UTCVendor advisory
  10. 2026-08-22 12:48 UTCGHSA enrichment
  11. 2026-08-21 23:49 UTCEPSS rescore
  12. 2026-08-21 22:44 UTCVendor advisory
  13. 2026-08-21 22:44 UTCGHSA enrichment
  14. 2026-08-21 09:35 UTCVendor advisory
  15. 2026-08-21 09:35 UTCGHSA enrichment
  16. 2026-08-20 20:26 UTCVendor advisory
  17. 2026-08-20 20:25 UTCGHSA enrichment
  18. 2026-08-20 07:16 UTCEG score recompute
  19. 2026-08-20 07:16 UTCVendor advisory
  20. 2026-08-20 07:15 UTCGHSA enrichment
  21. 2026-08-19 17:04 UTCEPSS rescore
  22. 2026-08-19 15:05 UTCVendor advisory
  23. 2026-08-19 15:05 UTCGHSA enrichment
  24. 2026-08-19 01:55 UTCEG score recompute
  25. 2026-08-19 01:55 UTCVendor advisory
  26. 2026-08-19 01:55 UTCGHSA enrichment
  27. 2026-08-18 13:48 UTCEPSS rescore
  28. 2026-08-17 15:09 UTCEG score recompute
  29. 2026-08-17 15:09 UTCVendor advisory
  30. 2026-08-17 15:09 UTCGHSA enrichment
  31. 2026-08-17 13:47 UTCEPSS rescore
  32. 2026-08-17 01:59 UTCEG score recompute
  33. 2026-08-17 01:59 UTCVendor advisory
  34. 2026-08-17 01:59 UTCGHSA enrichment
  35. 2026-08-16 14:56 UTCEPSS rescore
  36. 2026-08-16 12:50 UTCEG score recompute
  37. 2026-08-16 12:50 UTCVendor advisory
  38. 2026-08-16 12:50 UTCGHSA enrichment
  39. 2026-08-16 02:14 UTCEPSS rescore
  40. 2026-08-15 23:41 UTCVendor advisory
  41. 2026-08-15 23:41 UTCGHSA enrichment
  42. 2026-08-15 10:32 UTCEG score recompute
  43. 2026-08-15 10:32 UTCVendor advisory
  44. 2026-08-15 10:32 UTCGHSA enrichment
  45. 2026-08-15 01:30 UTCEPSS rescore
  46. 2026-08-14 21:22 UTCVendor advisory
  47. 2026-08-14 21:22 UTCGHSA enrichment
  48. 2026-08-14 08:05 UTCEG score recompute
  49. 2026-08-14 08:05 UTCVendor advisory
  50. 2026-08-14 08:05 UTCGHSA enrichment
  51. 2026-08-13 22:00 UTCEPSS rescore
  52. 2026-08-13 18:56 UTCVendor advisory
  53. 2026-08-13 18:56 UTCGHSA enrichment
  54. 2026-08-13 05:47 UTCVendor advisory
  55. 2026-08-13 05:47 UTCGHSA enrichment
  56. 2026-08-12 16:38 UTCEG score recompute
  57. 2026-08-12 16:38 UTCVendor advisory
  58. 2026-08-12 16:38 UTCGHSA enrichment
  59. 2026-08-12 13:51 UTCEPSS rescore
  60. 2026-08-12 03:27 UTCVendor advisory
  61. 2026-08-12 03:27 UTCGHSA enrichment
  62. 2026-08-11 14:15 UTCEG score recompute
  63. 2026-08-11 14:15 UTCVendor advisory
  64. 2026-08-11 14:15 UTCGHSA enrichment
  65. 2026-08-11 01:06 UTCEG score recompute
  66. 2026-08-11 01:06 UTCVendor advisory
  67. 2026-08-11 01:06 UTCGHSA enrichment
  68. 2026-08-11 00:00 UTCEPSS rescore
  69. 2026-08-10 11:57 UTCVendor advisory
  70. 2026-08-10 11:57 UTCGHSA enrichment
  71. 2026-08-09 22:48 UTCEG score recompute
  72. 2026-08-09 22:48 UTCVendor advisory
  73. 2026-08-09 22:48 UTCGHSA enrichment
  74. 2026-08-09 13:46 UTCEPSS rescore
  75. 2026-08-09 09:39 UTCVendor advisory

Frequently asked(5)

What is CVE-2026-53130?
CVE-2026-53130 is a high vulnerability published on June 24, 2026. In the Linux kernel, the following vulnerability has been resolved: fs/omfs: reject ssysblocksize smaller than OMFSDIRSTART omfsfillsuper() rejects oversized ssysblocksize values (> PAGE_SIZE), but it does not reject values smaller than OMFSDIRSTART (0x1b8 = 440). Later, omfsmakeempty() uses…
When was CVE-2026-53130 disclosed?
CVE-2026-53130 was first published in the National Vulnerability Database on June 24, 2026, with the most recent update on August 5, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-53130 actively exploited?
CVE-2026-53130 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 97.2% of all scored CVEs.
What is the CVSS score of CVE-2026-53130?
CVE-2026-53130 has a CVSS v4.0 base score of 7.8 (CNA self-assessment; NVD's own analysis pending).
How do I remediate CVE-2026-53130?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-53130, 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-2026-53130

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