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.
| Date Added | Due Date | Vulnerability Name | Required Action |
|---|---|---|---|
| N/A |
| Type | Version | Base score | Base severity | Vector |
|---|---|---|---|---|
| Primary | 3.1 | 7.1 | HIGH | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H |
| CWE ID | Type | Source |
|---|---|---|
| NVD-CWE-Other | Primary | nvd@nist.gov |
| Hyperlink | Source | Resource |
|---|---|---|
| https://git.kernel.org/stable/c/018685461a5b9a9a70e664ac77aef0d7415a3fd5 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | Patch |
| https://git.kernel.org/stable/c/218bf772bddd221489c38dde6ef8e917131161f6 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | Patch |
| https://git.kernel.org/stable/c/a2aff09807fbe4018c269d3773a629949058b210 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | Patch |
| https://git.kernel.org/stable/c/bf99ea52970caeb4583bdba1192c1f9b53b12c84 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | Patch |
| https://git.kernel.org/stable/c/018685461a5b9a9a70e664ac77aef0d7415a3fd5 | af854a3a-2127-422b-91ae-364da2661108 | Patch |
| https://git.kernel.org/stable/c/218bf772bddd221489c38dde6ef8e917131161f6 | af854a3a-2127-422b-91ae-364da2661108 | Patch |
| https://git.kernel.org/stable/c/a2aff09807fbe4018c269d3773a629949058b210 | af854a3a-2127-422b-91ae-364da2661108 | Patch |
| https://git.kernel.org/stable/c/bf99ea52970caeb4583bdba1192c1f9b53b12c84 | af854a3a-2127-422b-91ae-364da2661108 | Patch |