CVE-2024-58008

KEYS: trusted: dcp: fix improper sg use with CONFIG_VMAP_STACK=y

State: Published
Severity: 7.8 High
Published: Feb 27, 2025
Updated: Aug 5, 2026
Reserved: Feb 27, 2025

Description

In the Linux kernel, the following vulnerability has been resolved:

KEYS: trusted: dcp: fix improper sg use with CONFIG_VMAP_STACK=y

With vmalloc stack addresses enabled (CONFIG_VMAP_STACK=y) DCP trusted keys can crash during en- and decryption of the blob encryption key via the DCP crypto driver. This is caused by improperly using sg_init_one() with vmalloc'd stack buffers (plain_key_blob).

Fix this by always using kmalloc() for buffers we give to the DCP crypto driver.

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	0e28bf61a5f9ab30be3f3b4eafb8d097e39446bb to before 3192f1c54dddb9b5820bf5e8677809949d8e9c66Affected 0e28bf61a5f9ab30be3f3b4eafb8d097e39446bb to before 3355594de46fb1cba663f12b9644b664b8a609f4Affected 0e28bf61a5f9ab30be3f3b4eafb8d097e39446bb to before e8d9fab39d1f87b52932646b2f1e7877aa3fc0f4Affected 9e3b266afcfe4294e84496f50f006f029d3100dbAffected 6.10.7 to before 6.11Affected
LinuxLinux	6.11Affected before 6.11Not affected 6.12.14 through 6.12.Not affected 6.13.3 through 6.13.Not affected 6.14 and laterNot affected

References

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