CVE-2025-38068

crypto: lzo - Fix compression buffer overrun

State: Published
Severity: 7.8 High
Published: Jun 18, 2025
Updated: Aug 5, 2026
Reserved: Apr 16, 2025

Description

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.

Scores

CVSS	Score	Vector	Source
3.1	7.8 High	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H	Linux

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
LinuxLinux	64c70b1cf43de158282bc1675918d503e5b15cc1 to before 4b173bb2c4665c23f8fcf5241c7b06dfa6b5b111Affected 64c70b1cf43de158282bc1675918d503e5b15cc1 to before a98bd864e16f91c70b2469adf013d713d04d1d13Affected 64c70b1cf43de158282bc1675918d503e5b15cc1 to before 0acdc4d6e679ba31d01e3e7e2e4124b76d6d8e2aAffected 64c70b1cf43de158282bc1675918d503e5b15cc1 to before 7caad075acb634a74911830d6386c50ea12566cdAffected 64c70b1cf43de158282bc1675918d503e5b15cc1 to before 167373d77c70c2b558aae3e327b115249bb2652cAffected 64c70b1cf43de158282bc1675918d503e5b15cc1 to before cc47f07234f72cbd8e2c973cdbf2a6730660a463Affected
LinuxLinux	2.6.23Affected before 2.6.23Not affected 5.15.185 through 5.15.Not affected 6.1.141 through 6.1.Not affected 6.6.93 through 6.6.Not affected 6.12.31 through 6.12.Not affected 6.14.9 through 6.14.*Not affected 6.15 and laterNot affected

Product

Versions

LinuxLinux

64c70b1cf43de158282bc1675918d503e5b15cc1 to before 4b173bb2c4665c23f8fcf5241c7b06dfa6b5b111Affected
64c70b1cf43de158282bc1675918d503e5b15cc1 to before a98bd864e16f91c70b2469adf013d713d04d1d13Affected
64c70b1cf43de158282bc1675918d503e5b15cc1 to before 0acdc4d6e679ba31d01e3e7e2e4124b76d6d8e2aAffected
64c70b1cf43de158282bc1675918d503e5b15cc1 to before 7caad075acb634a74911830d6386c50ea12566cdAffected
64c70b1cf43de158282bc1675918d503e5b15cc1 to before 167373d77c70c2b558aae3e327b115249bb2652cAffected
64c70b1cf43de158282bc1675918d503e5b15cc1 to before cc47f07234f72cbd8e2c973cdbf2a6730660a463Affected

LinuxLinux

2.6.23Affected
before 2.6.23Not affected
5.15.185 through 5.15.*Not affected
6.1.141 through 6.1.*Not affected
6.6.93 through 6.6.*Not affected
6.12.31 through 6.12.*Not affected
6.14.9 through 6.14.*Not affected
6.15 and laterNot affected

References

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