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Review reviewHigh

CVE-2025-38068

Linux Linux, linux kernel, debian linux

In the Linux kernel, the following vulnerability has been resolved: crypto: lzo - Fix compression buffer overrun Unlike the decompression code, the compression code in LZO never checked for output overruns. It instead assumes that the caller always provides enough buffer space, disregarding the buffer length provided by the caller. Add a safe compression interface that checks for the end of buffer before each write. Use the safe interface in crypto/lzo.

CVSS
7.8
EPSS
0.16%
5.32% percentile
CISA KEV
Not listed
Published
2025.06.18
PRIORITY ASSESSMENT

Review review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV
Exploit probability0.16%
Technical severityCVSS 7.8

Vulnerability overview

In the Linux kernel, the following vulnerability has been resolved: crypto: lzo - Fix compression buffer overrun Unlike the decompression code, the compression code in LZO never checked for output overruns. It instead assumes that the caller always provides enough buffer space, disregarding the buffer length provided by the caller. Add a safe compression interface that checks for the end of buffer before each write. Use the safe interface in crypto/lzo.

Affected product and versions

Product
Linux Linux, linux kernel, debian linux
Affected versions
>= 64c70b1cf43de158282bc1675918d503e5b15cc1 < 4b173bb2c4665c23f8fcf5241c7b06dfa6b5b111, >= 64c70b1cf43de158282bc1675918d503e5b15cc1 < a98bd864e16f91c70b2469adf013d713d04d1d13, >= 64c70b1cf43de158282bc1675918d503e5b15cc1 < 0acdc4d6e679ba31d01e3e7e2e4124b76d6d8e2a, >= 64c70b1cf43de158282bc1675918d503e5b15cc1 < 7caad075acb634a74911830d6386c50ea12566cd, >= 64c70b1cf43de158282bc1675918d503e5b15cc1 < 167373d77c70c2b558aae3e327b115249bb2652c, >= 64c70b1cf43de158282bc1675918d503e5b15cc1 < cc47f07234f72cbd8e2c973cdbf2a6730660a463, >= 2.6.23, < 5.15.185, >= 5.16 < 6.1.141, >= 6.2 < 6.6.93, >= 6.7 < 6.12.31, >= 6.13 < 6.14.9, 11.0
Fixed versions
5.15.185, 6.1.141, 6.6.93, 6.12.31, 6.14.9

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide
  1. 1
    Identify

    Confirm that Linux Linux, linux kernel, debian linux and an affected version are present.

  2. 2
    Prioritize

    Combine exploitation signals with asset exposure and business criticality.

  3. 3
    Remediate

    Follow the vendor advisory or supported update path and preserve rollback options.

  4. 4
    Verify

    Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE
CWE-787