CVE-2025-21950

In the Linux kernel, the following vulnerability has been resolved: drivers: virt: acrn: hsm: Use kzalloc to avoid info leak in pmcmd_ioctl In the "pmcmd_ioctl" function, three memory objects allocated by kmalloc are initialized by "hcall_get_cpu_state", which are then copied to user space. The initializer is indeed implemented in "acrn_hypercall2" (arch/x86/include/asm/acrn.h). There is a risk of information leakage due to uninitialized bytes.

CVSS v3 7.1 HIGH

7.1^/10

CVSS v3 : HIGH

Vector :

Exploitability : 1.8 / Impact : 5.2

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://git.kernel.org/stable/c/1b8f7a2caa7f9cdfd135e3f78eb9d7e36fb95083	Patch
https://git.kernel.org/stable/c/4e15cf870d2c748e45d45ffc4d5b1dc1b7d50120	Patch
https://git.kernel.org/stable/c/524f29d78c9bdeb49f31f5b0376a07d2fc5cf563	Patch
https://git.kernel.org/stable/c/819cec1dc47cdeac8f5dd6ba81c1dbee2a68c3bb	Patch
https://git.kernel.org/stable/c/a4c21b878f0e237f45209a324c903ea7fb05247d	Patch
https://git.kernel.org/stable/c/d7e5031fe3f161c8eb5e84db1540bc4373ed861b	Patch
https://lists.debian.org/debian-lts-announce/2025/05/msg00045.html	Third Party Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel:6.14:rc1::::::
	cpe:2.3:o:linux:linux_kernel:6.14:rc2::::::
	cpe:2.3:o:linux:linux_kernel:6.14:rc3::::::
	cpe:2.3:o:linux:linux_kernel:6.14:rc4::::::
	cpe:2.3:o:linux:linux_kernel:6.14:rc5::::::

Configuration 2 (hide)

cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*

History

No history.

Information

Published : 2025-04-01 16:15

Updated : 2026-01-22 20:57

NVD link : CVE-2025-21950

Mitre link : CVE-2025-21950

CVE.ORG link : CVE-2025-21950

JSON object : View

Products Affected

debian

debian_linux

linux

linux_kernel

CWE

NVD-CWE-noinfo

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The initializer is indeed implemented in\n\"acrn_hypercall2\" (arch/x86/include/asm/acrn.h). There is a risk of\ninformation leakage due to uninitialized bytes."}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: drivers: virt: acrn: hsm: Usar kzalloc para evitar fugas de informaci\u00f3n en pmcmd_ioctl. En la funci\u00f3n \"pmcmd_ioctl\", tres objetos de memoria asignados por kmalloc se inicializan mediante \"hcall_get_cpu_state\", que posteriormente se copian al espacio de usuario. El inicializador est\u00e1 implementado en \"acrn_hypercall2\" (arch/x86/include/asm/acrn.h). 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