Kernel: kvm: svm: improper check in svm_set_x2apic_msr_interception allows direct access to host x2apic msrs
Priority LOW 26CWE-755Published · Updated
Key facts
- Attack vector
- Local
- Privileges required
- High
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- Partial Red Hat: 14 fixed, 1 without a fix
Attack profile from CVSS 3.1 · CNA. Fix status from CNA and Red Hat.
Summary
A flaw was found in KVM. An improper check in svm_set_x2apic_msr_interception() may allow direct access to host x2apic msrs when the guest resets its apic, potentially leading to a denial of service condition.
Why it matters now
EPSS 0.00261 17th percentileScored 2026-11-07
Fix Partial Red Hat: 5 advisoriesRed Hat: 14 fixed, 1 without a fix
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Red Hat | Red Hat Enterprise Linux 8 | — | 4.18.0-553.8.1.rt7.349.el8_10 | Patch available | CNA |
| Red Hat | Red Hat Enterprise Linux 8 | — | 4.18.0-553.8.1.el8_10 | Patch available | CNA |
| Red Hat | Red Hat Enterprise Linux 9 | — | 5.14.0-427.16.1.el9_4 | Patch available | CNA |
| Red Hat | Red Hat Enterprise Linux 9 | — | 5.14.0-427.16.1.el9_4 | Patch available | CNA |
| Red Hat | Red Hat Enterprise Linux 9.2 Extended Update Support | — | 5.14.0-284.69.1.el9_2 | Patch available | CNA |
| Red Hat | Red Hat Enterprise Linux 9.2 Extended Update Support | — | 5.14.0-284.69.1.rt14.354.el9_2 | Patch available | CNA |
| Red Hat | Red Hat Enterprise Linux 6 | — | — | Not affected | CNA |
| Red Hat | Red Hat Enterprise Linux 7 | — | — | Not affected | CNA |
| Red Hat | Red Hat Enterprise Linux 7 | — | — | Not affected | CNA |
| Red Hat | Red Hat Enterprise Linux 9 | — | — | No fix listed | CNA |
- Red Hat Enterprise Linux 8 VendorRed Hat Affected — Fixed in 4.18.0-553.8.1.rt7.349.el8_10 Patch available CNA
- Red Hat Enterprise Linux 8 VendorRed Hat Affected — Fixed in 4.18.0-553.8.1.el8_10 Patch available CNA
- Red Hat Enterprise Linux 9 VendorRed Hat Affected — Fixed in 5.14.0-427.16.1.el9_4 Patch available CNA
- Red Hat Enterprise Linux 9 VendorRed Hat Affected — Fixed in 5.14.0-427.16.1.el9_4 Patch available CNA
- Red Hat Enterprise Linux 9.2 Extended Update Support VendorRed Hat Affected — Fixed in 5.14.0-284.69.1.el9_2 Patch available CNA
- Red Hat Enterprise Linux 9.2 Extended Update Support VendorRed Hat Affected — Fixed in 5.14.0-284.69.1.rt14.354.el9_2 Patch available CNA
- Red Hat Enterprise Linux 6 VendorRed Hat Affected — Fixed in — Not affected CNA
- Red Hat Enterprise Linux 7 VendorRed Hat Affected — Fixed in — Not affected CNA
- Red Hat Enterprise Linux 7 VendorRed Hat Affected — Fixed in — Not affected CNA
- Red Hat Enterprise Linux 9 VendorRed Hat Affected — Fixed in — No fix listed CNA
CPE configurations NVD · 9
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | up to 6.5 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:6.6:rc1:*:*:*:*:*:* | 6.6 rc1 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:6.6:rc2:*:*:*:*:*:* | 6.6 rc2 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:6.6:rc3:*:*:*:*:*:* | 6.6 rc3 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:6.6:rc4:*:*:*:*:*:* | 6.6 rc4 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:6.6:rc5:*:*:*:*:*:* | 6.6 rc5 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:6.6:rc6:*:*:*:*:*:* | 6.6 rc6 | Vulnerable | Linux |
| cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:* | 8.0 | Vulnerable | Red Hat |
| cpe:2.3:o:redhat:enterprise_linux:9.0:*:*:*:*:*:*:* | 9.0 | Vulnerable | Red Hat |
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions up to 6.5 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:6.6:rc1:*:*:*:*:*:* Versions 6.6 rc1 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:6.6:rc2:*:*:*:*:*:* Versions 6.6 rc2 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:6.6:rc3:*:*:*:*:*:* Versions 6.6 rc3 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:6.6:rc4:*:*:*:*:*:* Versions 6.6 rc4 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:6.6:rc5:*:*:*:*:*:* Versions 6.6 rc5 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:6.6:rc6:*:*:*:*:*:* Versions 6.6 rc6 Vulnerable ·Linux
- cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:* Versions 8.0 Vulnerable ·Red Hat
- cpe:2.3:o:redhat:enterprise_linux:9.0:*:*:*:*:*:*:* Versions 9.0 Vulnerable ·Red Hat
Remediation
Red Hat 5 advisories
- RHSA-2024:4352 Released 2024-07-08 · Red Hat rating Importantkernel-rt security and bug fix update
- Red Hat Enterprise Linux NFV (v. 8) kernel-rt-4.18.0-553.8.1.rt7.349.el8_10, kernel-rt-core-4.18.0-553.8.1.rt7.349.el8_10, kernel-rt-debug-4.18.0-553.8.1.rt7.349.el8_10 +9
- Red Hat Enterprise Linux RT (v. 8) kernel-rt-4.18.0-553.8.1.rt7.349.el8_10, kernel-rt-core-4.18.0-553.8.1.rt7.349.el8_10, kernel-rt-debug-4.18.0-553.8.1.rt7.349.el8_10 +7
- RHSA-2024:4211 Released 2024-07-02 · Red Hat rating Importantkernel security and bug fix update
- Red Hat Enterprise Linux BaseOS (v. 8) bpftool-4.18.0-553.8.1.el8_10, kernel-4.18.0-553.8.1.el8_10, kernel-abi-stablelists-4.18.0-553.8.1.el8_10 +19
- Red Hat Enterprise Linux CRB (v. 8) kernel-tools-libs-devel-4.18.0-553.8.1.el8_10
- RHSA-2024:3855 Released 2024-06-12 · Red Hat rating Moderatekernel security update
- Red Hat CodeReady Linux Builder EUS (v.9.2) kernel-tools-libs-devel-5.14.0-284.69.1.el9_2
- Red Hat Enterprise Linux AppStream EUS (v.9.2) kernel-64k-debug-devel-5.14.0-284.69.1.el9_2, kernel-64k-debug-devel-matched-5.14.0-284.69.1.el9_2, kernel-64k-devel-5.14.0-284.69.1.el9_2 +9
- Red Hat Enterprise Linux BaseOS EUS (v.9.2) bpftool-7.0.0-284.69.1.el9_2, kernel-5.14.0-284.69.1.el9_2, kernel-64k-5.14.0-284.69.1.el9_2 +29
Show 2 more Red Hat advisories
- RHSA-2024:3854 Released 2024-06-12 · Red Hat rating Moderatekernel-rt security and bug fix update
- Red Hat Enterprise Linux Real Time EUS (v.9.2) kernel-rt-5.14.0-284.69.1.rt14.354.el9_2, kernel-rt-core-5.14.0-284.69.1.rt14.354.el9_2, kernel-rt-debug-5.14.0-284.69.1.rt14.354.el9_2 +9
- Red Hat Enterprise Linux Real Time for NFV EUS (v.9.2) kernel-rt-5.14.0-284.69.1.rt14.354.el9_2, kernel-rt-core-5.14.0-284.69.1.rt14.354.el9_2, kernel-rt-debug-5.14.0-284.69.1.rt14.354.el9_2 +11
- RHSA-2024:2758 Released 2024-05-08 · Red Hat rating Moderatekernel security and bug fix update
- Red Hat Enterprise Linux AppStream (v. 9) kernel-64k-debug-devel-5.14.0-427.16.1.el9_4, kernel-64k-debug-devel-matched-5.14.0-427.16.1.el9_4, kernel-64k-devel-5.14.0-427.16.1.el9_4 +11
- Red Hat Enterprise Linux BaseOS (v. 9) bpftool-7.3.0-427.16.1.el9_4, kernel-5.14.0-427.16.1.el9_4, kernel-64k-5.14.0-427.16.1.el9_4 +29
- Red Hat Enterprise Linux CRB (v. 9) kernel-tools-libs-devel-5.14.0-427.16.1.el9_4, libperf-5.14.0-427.16.1.el9_4
- Red Hat Enterprise Linux NFV (v. 9) kernel-rt-5.14.0-427.16.1.el9_4, kernel-rt-core-5.14.0-427.16.1.el9_4, kernel-rt-debug-5.14.0-427.16.1.el9_4 +11
- Red Hat Enterprise Linux RT (v. 9) kernel-rt-5.14.0-427.16.1.el9_4, kernel-rt-core-5.14.0-427.16.1.el9_4, kernel-rt-debug-5.14.0-427.16.1.el9_4 +9
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux 9 | Affected | No fix yet |
| Red Hat CodeReady Linux Builder EUS (v.9.2) | Fixed | RHSA-2024:3855 |
| Red Hat Enterprise Linux AppStream (v. 9) | Fixed | RHSA-2024:2758 |
| Red Hat Enterprise Linux AppStream EUS (v.9.2) | Fixed | RHSA-2024:3855 |
| Red Hat Enterprise Linux BaseOS (v. 8) | Fixed | RHSA-2024:4211 |
| Red Hat Enterprise Linux BaseOS (v. 9) | Fixed | RHSA-2024:2758 |
| Red Hat Enterprise Linux BaseOS EUS (v.9.2) | Fixed | RHSA-2024:3855 |
| Red Hat Enterprise Linux CRB (v. 8) | Fixed | RHSA-2024:4211 |
| Red Hat Enterprise Linux CRB (v. 9) | Fixed | RHSA-2024:2758 |
| Red Hat Enterprise Linux NFV (v. 8) | Fixed | RHSA-2024:4352 |
| Red Hat Enterprise Linux NFV (v. 9) | Fixed | RHSA-2024:2758 |
| Red Hat Enterprise Linux RT (v. 8) | Fixed | RHSA-2024:4352 |
| Red Hat Enterprise Linux RT (v. 9) | Fixed | RHSA-2024:2758 |
| Red Hat Enterprise Linux Real Time EUS (v.9.2) | Fixed | RHSA-2024:3854 |
| Red Hat Enterprise Linux Real Time for NFV EUS (v.9.2) | Fixed | RHSA-2024:3854 |
Not affected: 4 products
- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 7
- Red Hat Enterprise Linux AppStream EUS (v.9.2)
- Red Hat Enterprise Linux BaseOS (v. 8)
Timeline
- 2026-10-02 Threatist record created from CVE-2023-5090
- 2026-10-03 Alias added: GHSA-f67c-8m2w-79hm
References
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Sources
- CVE-2023-5090 · CVE Program
- CVE-2023-5090 · NVD
- FIRST EPSS
- GHSA-f67c-8m2w-79hm · GitHub Advisory Database · CC BY 4.0
- CVE-2023-5090 · Red Hat security data · CC BY 4.0
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