CVE-2026-97485Hinoki check available

Kernel crash via unchecked OMFS block size

Published Sep 24, 2026 · Updated Sep 24, 2026

Denial of service in affected Linux kernels allows local users to crash the kernel by mounting a crafted OMFS filesystem image. The OMFS superblock setup ignores failed sb_set_blocksize calls, then passes an oversized buffer-head offset to folio_set_bh and hits a BUG_ON. Reaching the failure requires permission to mount the image; the resulting BUG can panic or otherwise interrupt the host.

CVSS severityUnavailable
Unscored
EPSS probability0.17%
Next 30 days · Oct 19, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Denial of service in affected Linux kernels allows local users to crash the kernel by mounting a crafted OMFS filesystem image. The OMFS superblock setup ignores failed sb_set_blocksize calls, then passes an oversized buffer-head offset to folio_set_bh and hits a BUG_ON. Reaching the failure requires permission to mount the image; the resulting BUG can panic or otherwise interrupt the host.

The record

CVE
CVE-2026-97485
Published
Sep 24, 2026
Updated
Sep 24, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499.004
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. Sep 24, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 24, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <6.12.111
  2. Affected versionversion=0 <6.18.53
  3. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <18c3d6fcb557f920c9143711497625e70153874c
  4. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <61ffc31cd8642d7a950b6831720629c8331365f6
  5. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <fd4d6593c51253c79be422d6ae42e318250e20a7

What conditions does exploitation require?

Attack vectorlocal
Required privilegesadmin

What is affected?

The Linux Kernel Organization · Linuxversion=0 <6.12.111; version=0 <6.18.53; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <18c3d6fcb557f920c9143711497625e70153874c; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <61ffc31cd8642d7a950b6831720629c8331365f6; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <fd4d6593c51253c79be422d6ae42e318250e20a7

Published CVSS scores

No CVSS assessment is available in this record.

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Activity data is delayed. The latest report is Sep 28, 2026.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 22, 2026Sep 28, 2026
Latest reporting daySep 28, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1499.004Endpoint Denial of Service: Application or System Exploitation

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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