CVE-2026-72369

Kernel panic via Minix bitmap-count overflow

Published Aug 15, 2026 · Updated Aug 15, 2026

Integer overflow in the Minix filesystem in Linux allows local users to panic the kernel by mounting a crafted Minix v3 image. minix_blocks_needed() performs DIV_ROUND_UP() in unsigned arithmetic, so near-UINT_MAX inode or zone counts wrap the bitmap-block result to zero and let minix_fill_super() dereference an unallocated bitmap entry. Exploitation requires local access and permission to mount an attacker-controlled filesystem image, resulting in a system-wide crash.

CVSS severity7.8
High
EPSS probability0.18%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Integer overflow in the Minix filesystem in Linux allows local users to panic the kernel by mounting a crafted Minix v3 image. minix_blocks_needed() performs DIV_ROUND_UP() in unsigned arithmetic, so near-UINT_MAX inode or zone counts wrap the bitmap-block result to zero and let minix_fill_super() dereference an unallocated bitmap entry. Exploitation requires local access and permission to mount an attacker-controlled filesystem image, resulting in a system-wide crash.

The record

CVE
CVE-2026-72369
Published
Aug 15, 2026
Updated
Aug 15, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-190, T1499.004
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 15, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 15, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

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

  1. Affected versionversion=1efc128ee4adbc23e082715425ff895449d233bc
  2. Affected versionversion=2bb588cede1c1969e49c0a2822c8cb8b346b7682 <a11ebaab50d27d6c4c78506f84ff36452e0b901d
  3. Affected versionversion=31fefc18096cdc5549cfa54964d90e0b3229aedc <abe3536a4bedcc43de80b6d4d7e3d57e9ba382a5
  4. Affected versionversion=5.10.252 <5.11
  5. Affected versionversion=5.15.202 <5.16
  6. Affected versionversion=6.1.165 <6.2
  7. Affected versionversion=6.12.75 <6.12.97
  8. Affected versionversion=6.18.16 <6.18.40
  9. Affected versionversion=6.19.6 <6.20
  10. Affected versionversion=6.6.128 <6.6.145
  11. Affected versionversion=66c7c239c65341f99ae388d4d53dc9df2bcb9925
  12. Affected versionversion=7.0
  13. Affected versionversion=8c97a6ddc95690a938ded44b4e3202f03f15078c <8a29e60e2176b02e04f8737c8b32b696230eb0c5
  14. Affected versionversion=8c97a6ddc95690a938ded44b4e3202f03f15078c <fb3e566cafc38fe3ba35e6843a2d529a3748870c
  15. Affected versionversion=a051ecf5c5b0387840dc210413ed3bc7fbdaa69c
  16. Affected versionversion=d791c544efd6b9c944b43cf7f502e5bcb02fb941
  17. Affected versionversion=f57ccd4657c7f082dc47e5b9e18a883bb5f9118f <959c95340a9e19cd333b4c18935fdeecbb2f319d

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=1efc128ee4adbc23e082715425ff895449d233bc; version=2bb588cede1c1969e49c0a2822c8cb8b346b7682 <a11ebaab50d27d6c4c78506f84ff36452e0b901d; version=31fefc18096cdc5549cfa54964d90e0b3229aedc <abe3536a4bedcc43de80b6d4d7e3d57e9ba382a5; version=5.10.252 <5.11; version=5.15.202 <5.16; version=6.1.165 <6.2; version=6.12.75 <6.12.97; version=6.18.16 <6.18.40; version=6.19.6 <6.20; version=6.6.128 <6.6.145; version=66c7c239c65341f99ae388d4d53dc9df2bcb9925; version=7.0; version=8c97a6ddc95690a938ded44b4e3202f03f15078c <8a29e60e2176b02e04f8737c8b32b696230eb0c5; version=8c97a6ddc95690a938ded44b4e3202f03f15078c <fb3e566cafc38fe3ba35e6843a2d529a3748870c; version=a051ecf5c5b0387840dc210413ed3bc7fbdaa69c; version=d791c544efd6b9c944b43cf7f502e5bcb02fb941; version=f57ccd4657c7f082dc47e5b9e18a883bb5f9118f <959c95340a9e19cd333b4c18935fdeecbb2f319d

Published CVSS scores

7.8Linux CNACVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
5.5Red HatCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

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.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-190Integer Overflow or Wraparound
T1499.004Application 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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