In the Linux kernel, the following vulnerability has been resolved:
kvm: LAPIC: Restore guard to prevent illegal APIC register access
Per the SDM, "any access that touches bytes 4 through 15 of an APIC
register may cause undefined behavior and must not be executed."
Worse, such an access in kvm_lapic_reg_read can result in a leak of
kernel stack contents. Prior to commit 01402cf81051 ("kvm: LAPIC:
write down valid APIC registers"), such an access was explicitly
disallowed. Restore the guard that was removed in that commit.
References
Configurations
Configuration 1 (hide)
|
History
30 Apr 2025, 15:11
| Type | Values Removed | Values Added |
|---|---|---|
| CPE | cpe:2.3:o:linux:linux_kernel:5.13:rc2:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:5.13:rc6:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:5.13:rc4:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:5.13:rc1:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:5.13:rc5:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:5.13:rc3:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* |
|
| References | () https://git.kernel.org/stable/c/018685461a5b9a9a70e664ac77aef0d7415a3fd5 - Patch | |
| References | () https://git.kernel.org/stable/c/218bf772bddd221489c38dde6ef8e917131161f6 - Patch | |
| References | () https://git.kernel.org/stable/c/a2aff09807fbe4018c269d3773a629949058b210 - Patch | |
| References | () https://git.kernel.org/stable/c/bf99ea52970caeb4583bdba1192c1f9b53b12c84 - Patch | |
| First Time |
Linux
Linux linux Kernel |
|
| CVSS |
v2 : v3 : |
v2 : unknown
v3 : 7.1 |
| CWE | NVD-CWE-Other |
Information
Published : 2024-05-21 15:15
Updated : 2025-04-30 15:11
NVD link : CVE-2021-47255
Mitre link : CVE-2021-47255
CVE.ORG link : CVE-2021-47255
JSON object : View
Products Affected
linux
- linux_kernel
CWE