CVE-2026-31553

In the Linux kernel, the following vulnerability has been resolved: KVM: arm64: Fix the descriptor address in __kvm_at_swap_desc() Using "(u64 __user *)hva + offset" to get the virtual addresses of S1/S2 descriptors looks really wrong, if offset is not zero. What we want to get for swapping is hva + offset, not hva + offset*8. ;-) Fix it.

CVSS v3 8.8 HIGH

8.8^/10

CVSS v3 : HIGH

Vector :

Exploitability : 2.0 / Impact : 6.0

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope CHANGED

References

Link	Resource
https://git.kernel.org/stable/c/0496acc42fb51eee040b5170cec05cec41385540	Patch
https://git.kernel.org/stable/c/4307e05e568782fc92eff651b09ee5dee88a058d	Patch

Configurations

Configuration 1 (hide)

OR	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel:6.19:-::::::
	cpe:2.3:o:linux:linux_kernel:7.0:rc1::::::
	cpe:2.3:o:linux:linux_kernel:7.0:rc2::::::
	cpe:2.3:o:linux:linux_kernel:7.0:rc3::::::
	cpe:2.3:o:linux:linux_kernel:7.0:rc4::::::
	cpe:2.3:o:linux:linux_kernel:7.0:rc5::::::
	cpe:2.3:o:linux:linux_kernel:7.0:rc6::::::
	cpe:2.3:o:linux:linux_kernel:7.0:rc7::::::

History

11 Nov 2026, 23:10

Type	Values Removed	Values Added
Summary		(es) En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta: KVM: arm64: Corrige la dirección del descriptor en __kvm_at_swap_desc() Usar ’(u64 __user *)hva + offset’ para obtener las direcciones virtuales de los descriptores S1/S2 parece realmente incorrecto, si offset no es cero. Lo que queremos obtener para el intercambio es hva + offset, no hva + offset8. ;-) Corregido.

Information

Published : 2026-04-24 15:16

Updated : 2026-11-11 23:10

NVD link : CVE-2026-31553

Mitre link : CVE-2026-31553

CVE.ORG link : CVE-2026-31553

JSON object : View

Products Affected

linux

linux_kernel

CWE

NVD-CWE-noinfo

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