PT-2025-51672 · Linux+3 · Linux Kernel+3
Published
2025-12-16
·
Updated
2026-05-11
·
CVE-2025-68259
CVSS v2.0
4.6
Medium
| Vector | AV:L/AC:L/Au:S/C:N/I:N/A:C |
Name of the Vulnerable Software and Affected Versions
Linux kernel (affected versions not specified)
Description
The Linux kernel contains a flaw within the KVM SVM component. Specifically, when re-injecting a soft interrupt from an INT3 instruction, the system may discard the exception and retry the instruction if the code stream changes between the CPU executing the instruction and KVM decoding it. This can lead to incorrect decoding and potentially clobber guest state. The issue often manifests as "Oops: int3" panics in Linux guests when using the kernel's "text poke" code patching mechanism. The bug can be triggered by repeatedly checking a static branch while swapping out the guest's TSS memory on the host.
Recommendations
At the moment, there is no information about a newer version that contains a fix for this vulnerability.
Exploit
Time Of Check To Time Of Use
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Weakness Enumeration
Related Identifiers
Affected Products
Debian
Linuxmint
Linux Kernel
Ubuntu