CVE-2026-53130

HIGHPre-NVD 7.87.8—
EchelonGraph scoreMEDIUM confidence

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

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 4 sources updated this week
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

July 6, 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(21)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntulinux-virtual-hwe-20.04-edge (5.15.0.186.196~20.04.1) @ focal2026-07-27ubuntu
ubuntulinux-tools-nvidia-tegra-rt-5.15 (5.15.0.1064.66~20.04.1) @ focal2026-07-27ubuntu
ubuntulinux-tools-oracle-7.0 (7.0.0-1008.8) @ resolute2026-07-27ubuntu
ubuntulinux-tools-oracle-lts-24.04 (6.8.0-1058.61) @ noble2026-07-27ubuntu
ubuntulinux-tools-oracle-edge (6.8.0-1058.61~22.04.1) @ jammy2026-07-27ubuntu
ubuntulinux-tools-aws-edge (5.15.0.1112.119~20.04.1) @ focal2026-07-27ubuntu
ubuntulinux-tools-nvidia-tegra-rt-5.15 (5.15.0.1064.64) @ jammy2026-07-27ubuntu
ubuntulinux-tools-azure-fde-7.0 (7.0.0-1009.9) @ resolute2026-07-27ubuntu
ubuntulinux-tools-aws-lts-24.04 (6.8.0-1061.64+1) @ noble2026-07-27ubuntu
ubuntulinux-tools-azure-lts-24.04 (6.8.0-1063.71) @ noble2026-07-27ubuntu
ubuntulinux-tools-azure-fips-6.8 (6.8.0-1063.71+fips2) @ noble2026-07-27ubuntu
ubuntulinux-tools-azure-fde-6.8 (6.8.0-1062.69~22.04.1) @ jammy2026-07-27ubuntu
ubuntulinux-tools-oracle-lts-22.04 (5.15.0.1109.105) @ jammy2026-07-27ubuntu
ubuntulinux-virtual-hwe-26.04-edge (7.0.0-28.28) @ resolute2026-07-27ubuntu
ubuntulinux-virtual-6.8 (6.8.0-136.136) @ noble2026-07-27ubuntu
ubuntulinux-tools-oem-7.0 (7.0.0-1009.9) @ resolute2026-07-27ubuntu
ubuntulinux-virtual-hwe-24.04-edge (7.0.0-28.28~24.04.1) @ noble2026-07-27ubuntu
ubuntulinux-tools-gcp-fips-6.8 (6.8.0-1064.72+fips1) @ noble2026-07-27ubuntu
ubuntulinux-tools-azure-fde-lts-24.04 (6.8.0-1062.69) @ noble2026-07-27ubuntu
ubuntulinux-tools-azure-fde-lts-22.04 (5.15.0.1117.126) @ jammy2026-07-27ubuntu
ubuntulinux-tools-nvidia-lowlatency-64k-6.8 (6.8.0-1059.62.1) @ noble2026-07-27ubuntu

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.

Weakness Classification(1)

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

All Vendor Advisories

(21)

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 15× in last 7d / 75× 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.

  1. 2026-07-27 21:08 UTCEG score recompute
  2. 2026-07-27 21:08 UTCVendor advisory
  3. 2026-07-27 21:07 UTCGHSA enrichment
  4. 2026-07-27 06:10 UTCVendor advisory
  5. 2026-07-27 06:10 UTCGHSA enrichment
  6. 2026-07-26 15:26 UTCEG score recompute
  7. 2026-07-26 15:26 UTCVendor advisory
  8. 2026-07-26 15:26 UTCGHSA enrichment
  9. 2026-07-26 14:54 UTCEPSS rescore
  10. 2026-07-25 14:18 UTCEPSS rescore
  11. 2026-07-24 14:18 UTCEPSS rescore
  12. 2026-07-23 14:18 UTCEPSS rescore
  13. 2026-07-23 03:19 UTCEG score recompute
  14. 2026-07-22 14:08 UTCEPSS rescore
  15. 2026-07-21 15:25 UTCEPSS rescore
  16. 2026-07-20 17:08 UTCEPSS rescore
  17. 2026-07-19 14:31 UTCEPSS rescore
  18. 2026-07-19 14:31 UTCEPSS rescore
  19. 2026-07-19 02:29 UTCEPSS rescore
  20. 2026-07-18 10:04 UTCEPSS rescore
  21. 2026-07-17 04:18 UTCGHSA enrichment
  22. 2026-07-16 17:03 UTCEPSS rescore
  23. 2026-07-16 15:09 UTCGHSA enrichment
  24. 2026-07-16 02:00 UTCGHSA enrichment
  25. 2026-07-15 16:57 UTCEPSS rescore
Show 57 more
  1. 2026-07-15 16:57 UTCEPSS rescore
  2. 2026-07-15 12:51 UTCGHSA enrichment
  3. 2026-07-14 23:41 UTCGHSA enrichment
  4. 2026-07-14 10:24 UTCGHSA enrichment
  5. 2026-07-13 22:31 UTCEPSS rescore
  6. 2026-07-13 21:15 UTCGHSA enrichment
  7. 2026-07-13 08:05 UTCGHSA enrichment
  8. 2026-07-12 18:53 UTCGHSA enrichment
  9. 2026-07-12 05:46 UTCEPSS rescore
  10. 2026-07-12 05:44 UTCGHSA enrichment
  11. 2026-07-11 16:35 UTCGHSA enrichment
  12. 2026-07-11 08:27 UTCEPSS rescore
  13. 2026-07-11 08:27 UTCEPSS rescore
  14. 2026-07-11 03:26 UTCGHSA enrichment
  15. 2026-07-10 14:17 UTCGHSA enrichment
  16. 2026-07-10 00:56 UTCGHSA enrichment
  17. 2026-07-09 19:10 UTCEPSS rescore
  18. 2026-07-09 19:10 UTCEPSS rescore
  19. 2026-07-09 11:39 UTCGHSA enrichment
  20. 2026-07-08 22:24 UTCGHSA enrichment
  21. 2026-07-08 15:16 UTCEPSS rescore
  22. 2026-07-08 15:16 UTCEPSS rescore
  23. 2026-07-08 09:14 UTCGHSA enrichment
  24. 2026-07-07 20:05 UTCGHSA enrichment
  25. 2026-07-07 13:46 UTCEPSS rescore
  26. 2026-07-07 13:46 UTCEPSS rescore
  27. 2026-07-07 06:56 UTCGHSA enrichment
  28. 2026-07-06 17:44 UTCGHSA enrichment
  29. 2026-07-06 16:27 UTCEPSS rescore
  30. 2026-07-06 16:27 UTCEPSS rescore
  31. 2026-07-06 04:34 UTCGHSA enrichment
  32. 2026-07-06 02:23 UTCEPSS rescore
  33. 2026-07-06 02:23 UTCEPSS rescore
  34. 2026-07-05 15:22 UTCGHSA enrichment
  35. 2026-07-05 02:12 UTCGHSA enrichment
  36. 2026-07-04 13:02 UTCGHSA enrichment
  37. 2026-07-04 06:31 UTCEPSS rescore
  38. 2026-07-04 06:31 UTCEPSS rescore
  39. 2026-07-03 23:52 UTCGHSA enrichment
  40. 2026-07-03 10:43 UTCGHSA enrichment
  41. 2026-07-02 21:29 UTCGHSA enrichment
  42. 2026-07-02 08:19 UTCGHSA enrichment
  43. 2026-07-01 19:10 UTCGHSA enrichment
  44. 2026-07-01 06:01 UTCEG score recompute▲ 7.80
  45. 2026-07-01 06:01 UTCGHSA enrichment
  46. 2026-06-30 23:22 UTCEPSS rescore
  47. 2026-06-29 14:06 UTCEPSS rescore
  48. 2026-06-29 14:06 UTCEPSS rescore
  49. 2026-06-28 14:07 UTCEPSS rescore
  50. 2026-06-28 07:52 UTCMITRE cvelistV5CVSS v3 → 7.8 · severity → HIGH
  51. 2026-06-28 04:56 UTCEPSS rescore
  52. 2026-06-28 04:56 UTCEPSS rescore
  53. 2026-06-28 00:04 UTCGHSA enrichment
  54. 2026-06-27 03:08 UTCEPSS rescore
  55. 2026-06-25 13:49 UTCEPSS rescore
  56. 2026-06-24 18:07 UTCEG score recompute
  57. 2026-06-24 18:03 UTCNVD updatefirst tracked

Related CVEs(same vendor + same CWE)

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 July 6, 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 97.1% of all scored CVEs.
What is the CVSS score of CVE-2026-53130?
CVE-2026-53130 has a CVSS v3 base score of 7.8 (NVD).
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

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