CVE-2024-58008

Summary

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.

Affected Software

VendorProductVersion RangeStatus
LinuxLinux0e28bf61a5f9ab30be3f3b4eafb8d097e39446bb < 3192f1c54dddb9b5820bf5e8677809949d8e9c66affected
LinuxLinux0e28bf61a5f9ab30be3f3b4eafb8d097e39446bb < 3355594de46fb1cba663f12b9644b664b8a609f4affected
LinuxLinux0e28bf61a5f9ab30be3f3b4eafb8d097e39446bb < e8d9fab39d1f87b52932646b2f1e7877aa3fc0f4affected
LinuxLinux9e3b266afcfe4294e84496f50f006f029d3100dbaffected
LinuxLinux6.10.7 < 6.11affected
LinuxLinux6.11affected
LinuxLinux0 < 6.11unaffected
LinuxLinux6.12.14 <= 6.12.*unaffected
LinuxLinux6.13.3 <= 6.13.*unaffected
LinuxLinux6.14 <= *unaffected

Weaknesses

References