CVE-2024-53228

riscv: kvm: Fix out-of-bounds array access

State: Published
Severity: 7.8 High
Published: Dec 27, 2024
Updated: May 11, 2026
Reserved: Nov 19, 2024

Description

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

riscv: kvm: Fix out-of-bounds array access

In kvm_riscv_vcpu_sbi_init() the entry->ext_idx can contain an out-of-bound index. This is used as a special marker for the base extensions, that cannot be disabled. However, when traversing the extensions, that special marker is not checked prior indexing the array.

Add an out-of-bounds check to the function.

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	CISA-ADP

Weaknesses

CWE-129 Improper Validation of Array Index

Affected Products

Product	Versions
LinuxLinux	56d8a385b60556019ecb45d6098830c9ef6a13e0 to before 3c49e1084a5df99807fc43dd318c491e6cbaa168Affected 56d8a385b60556019ecb45d6098830c9ef6a13e0 to before b1af648f0d610665c956ea4604d9f797e5c7e991Affected 56d8a385b60556019ecb45d6098830c9ef6a13e0 to before 332fa4a802b16ccb727199da685294f85f9880cbAffected
LinuxLinux	6.7Affected before 6.7Not affected 6.11.11 through 6.11.Not affected 6.12.2 through 6.12.Not affected 6.13 and laterNot affected

References

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