CVE-2025-38469

KVM: x86/xen: Fix cleanup logic in emulation of Xen schedop poll hypercalls

MEDIUM

5.5

CVSS Score

Published: July 28, 2025 at 11:21 AM UTC

Updated: June 17, 2026 at 09:16 AM UTC

1 product affected across 1 vendorLinux Kernel

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Severity

MEDIUM5.5

Exploit prediction

EPSS 0.2%

Description

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]

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Linux Kernel · Linux

95%

6.13 ≤ v < 6.15.86.2 ≤ v < 6.12.406.2 ≤ v < 6.15.86.2 ≤ v < 6.166.2 ≤ v < 6.6.1006.2.1 ≤ v < 6.6.1006.7 ≤ v < 6.12.406.16 rc1 6.16 rc2 6.16 rc3 6.16 rc4 6.16 rc5 6.16 rc6 6.16 rc7 6.2 6.2 rc2 6.2 rc3 6.2 rc4 6.2 rc5 6.2 rc6 6.2 rc7 6.2 rc892c58965e9656dc6e682a8ffe520fac0fb256d13

Vendor states this is fixed in 061c553c66bc1638c280739999224c8000fd4602 (fixed)

Vendor states this is fixed in 3ee59c38ae7369ad1f7b846e05633ccf0d159fab (fixed)

Vendor states this is fixed in 5a53249d149f48b558368c5338b9921b76a12f8c (fixed)

Vendor states this is fixed in fd627ac8a5cff4d45269f164b13ddddc0726f2cc (fixed)

Vendor states this is fixed in 6.12.40 (unaffected)

Vendor states this is fixed in 6.15.8 (unaffected)

Vendor states this is fixed in 6.16 (unaffected)

Vendor states this is fixed in 6.2 (unaffected)

Vendor states this is fixed in 6.6.100 (unaffected)