CVE-2026-53059

Kernel crash via truncated device-mapper region count

Published Jun 24, 2026 · Updated Jun 24, 2026

Integer overflow in the Linux Kernel device-mapper log allows local users to crash the kernel via a crafted mirror target. create_log_context() truncates the 64-bit region count to 32 bits and allocates undersized clean_bits, sync_bits, and recovering_bits arrays; later log bit operations index the full region space and write beyond them. Reachability requires local access and the ability to instantiate the oversized device-mapper configuration; the demonstrated crash requires a reboot.

CVSS severity7.8
High
EPSS probability0.14%
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 Linux Kernel device-mapper log allows local users to crash the kernel via a crafted mirror target. create_log_context() truncates the 64-bit region count to 32 bits and allocates undersized clean_bits, sync_bits, and recovering_bits arrays; later log bit operations index the full region space and write beyond them. Reachability requires local access and the ability to instantiate the oversized device-mapper configuration; the demonstrated crash requires a reboot.

The record

CVE
CVE-2026-53059
Published
Jun 24, 2026
Updated
Jun 24, 2026
Vendor
The Linux Kernel Organization
Product
Linux Kernel
Classifications
CWE-190, CWE-787, T1499.004
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 24, 2026CVE publishedPublication date reported by the CVE source.
  2. Jun 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=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <12bd5b88e91a02785244ff1d20fb157e96e9cdc8
  2. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <3ec74da927b4e171a6fc0e77b1188ba4d019af51
  3. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <44ab8875ae4a2842bde2d756bed195d375e0debb
  4. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <4ec8323b9f0764a14d532b1ae9b87f8a9fecb867
  5. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <b455903eed4558982be0811f5b7f44f6bbc4ff57
  6. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <c20e36b7631d83e7535877f08af8b0af72c44b1a
  7. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <d4ac87567f86a55c3c92e9a5144dcd943a9772a1
  8. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <defe483e47173768c227532694dc78cb65db5f09
  9. Affected versionversion=2.6.12

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linux Kernelversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <12bd5b88e91a02785244ff1d20fb157e96e9cdc8; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <3ec74da927b4e171a6fc0e77b1188ba4d019af51; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <44ab8875ae4a2842bde2d756bed195d375e0debb; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <4ec8323b9f0764a14d532b1ae9b87f8a9fecb867; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <b455903eed4558982be0811f5b7f44f6bbc4ff57; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <c20e36b7631d83e7535877f08af8b0af72c44b1a; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <d4ac87567f86a55c3c92e9a5144dcd943a9772a1; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <defe483e47173768c227532694dc78cb65db5f09; version=2.6.12

Published CVSS scores

6.0Amazon LinuxCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H
7.8NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
6.3Oracle LinuxCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:H
6.3Red HatCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/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
CWE-787Out-of-bounds Write
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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