KVM: x86/xen: Fix cleanup logic in emulation of Xen schedop poll hypercalls
Priority LOW 24Published · Updated
Key facts
- Attack vector
- Local
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA.
Summary
In the Linux kernel, the following vulnerability has been resolved: KVM: x86/xen: Fix cleanup logic in emulation of Xen schedop poll hypercalls kvm_xen_schedop_poll does a kmalloc_array() when a VM polls the host for more than one event channel potr (nr_ports > 1). After the kmalloc_array(), the error paths need to go through the "out" label, but the call to kvm_read_guest_virt() does not. [Adjusted commit message. - Paolo]
Why it matters now
EPSS 0.00179 7th percentileScored 2026-11-07
Fix Fixed Linux (Linux): 6.6.100, 6.12.40, 6.15.8 +1
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 |
|---|---|---|---|---|---|
| Linux | Linux | 6.2 and later | 6.6.100, 6.12.40, 6.15.8, 6.16 | Patch available | CNA |
- Linux VendorLinux Affected 6.2 and later Fixed in 6.6.100, 6.12.40, 6.15.8, 6.16 Patch available CNA
CPE configurations NVD · 16
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | 6.2.1 to before 6.6.100; 6.7 to before 6.12.40; 6.13 to before 6.15.8 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:6.2:-:*:*:*:*:*:* | 6.2 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:6.2:rc2:*:*:*:*:*:* | 6.2 rc2 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:6.2:rc3:*:*:*:*:*:* | 6.2 rc3 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:6.2:rc4:*:*:*:*:*:* | 6.2 rc4 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:6.2:rc5:*:*:*:*:*:* | 6.2 rc5 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:6.2:rc6:*:*:*:*:*:* | 6.2 rc6 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:6.2:rc7:*:*:*:*:*:* | 6.2 rc7 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:6.2:rc8:*:*:*:*:*:* | 6.2 rc8 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:6.16:rc1:*:*:*:*:*:* | 6.16 rc1 | Vulnerable | Linux |
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions 6.2.1 to before 6.6.100; 6.7 to before 6.12.40; 6.13 to before 6.15.8 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:6.2:-:*:*:*:*:*:* Versions 6.2 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:6.2:rc2:*:*:*:*:*:* Versions 6.2 rc2 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:6.2:rc3:*:*:*:*:*:* Versions 6.2 rc3 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:6.2:rc4:*:*:*:*:*:* Versions 6.2 rc4 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:6.2:rc5:*:*:*:*:*:* Versions 6.2 rc5 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:6.2:rc6:*:*:*:*:*:* Versions 6.2 rc6 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:6.2:rc7:*:*:*:*:*:* Versions 6.2 rc7 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:6.2:rc8:*:*:*:*:*:* Versions 6.2 rc8 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:6.16:rc1:*:*:*:*:*:* Versions 6.16 rc1 Vulnerable ·Linux
Show 6 more CPE
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:linux:linux_kernel:6.16:rc2:*:*:*:*:*:* | 6.16 rc2 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:6.16:rc3:*:*:*:*:*:* | 6.16 rc3 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:6.16:rc4:*:*:*:*:*:* | 6.16 rc4 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:6.16:rc5:*:*:*:*:*:* | 6.16 rc5 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:6.16:rc6:*:*:*:*:*:* | 6.16 rc6 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:6.16:rc7:*:*:*:*:*:* | 6.16 rc7 | Vulnerable | Linux |
- cpe:2.3:o:linux:linux_kernel:6.16:rc2:*:*:*:*:*:* Versions 6.16 rc2 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:6.16:rc3:*:*:*:*:*:* Versions 6.16 rc3 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:6.16:rc4:*:*:*:*:*:* Versions 6.16 rc4 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:6.16:rc5:*:*:*:*:*:* Versions 6.16 rc5 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:6.16:rc6:*:*:*:*:*:* Versions 6.16 rc6 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:6.16:rc7:*:*:*:*:*:* Versions 6.16 rc7 Vulnerable ·Linux
Remediation
- Fix · CNA Linux (Linux) Fixed in 6.6.100, 6.12.40, 6.15.8, 6.16
Vendor assessments
Red Hat
Not affected: 5 products
- Red Hat Enterprise Linux 10
- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 7
- Red Hat Enterprise Linux 8
- Red Hat Enterprise Linux 9
Timeline
- 2026-10-02 Threatist record created from CVE-2025-38469
- 2026-10-03 Alias added: GHSA-632w-7gxq-vxq4
References
More Linux Kernel vulnerabilities
- TI-2025-26358 tls: fix handling of zero-length records on the rx_list KEVCVSS 3.1CRITICAL 9.8
- TI-2026-38352 netfilter: bridge: make ebt_snat ARP rewrite writable KEVCVSS 3.1HIGH 8.8
- TI-2013-05264 The (1) get_user and (2) put_user API functions in the Linux kernel before 3.5.5 on the… KEVCVSS 3.1HIGH 8.8
- TI-2022-00125 Integer overflow in kernel KEVCVSS 3.1HIGH 8.4
- TI-2013-01864 The perf_swevent_init function in kernel/events/core.c in the Linux kernel before 3.8.9… KEVCVSS 3.1HIGH 8.4
- TI-2021-05514 Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACE KEVCVSS 3.1HIGH 8.3
Sources
- CVE-2025-38469 · CVE Program
- CVE-2025-38469 · NVD
- FIRST EPSS
- GHSA-632w-7gxq-vxq4 · GitHub Advisory Database · CC BY 4.0
- CVE-2025-38469 · Red Hat security data · CC BY 4.0
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