CVE-2021-47407

In the Linux kernel, the following vulnerability has been resolved: KVM: x86: Handle SRCU initialization failure during page track init Check the return of init_srcu_struct(), which can fail due to OOM, when initializing the page track mechanism. Lack of checking leads to a NULL pointer deref found by a modified syzkaller. [Move the call towards the beginning of kvm_arch_init_vm. - Paolo]

CVSS v3 5.5 MEDIUM

5.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.8 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://git.kernel.org/stable/c/4664318f73e496cd22c71b10888e75434a123e23	Mailing List Patch
https://git.kernel.org/stable/c/deb2949417677649e2413266d7ce8c2ff73952b4	Mailing List Patch
https://git.kernel.org/stable/c/eb7511bf9182292ef1df1082d23039e856d1ddfb	Mailing List Patch
https://git.kernel.org/stable/c/4664318f73e496cd22c71b10888e75434a123e23	Mailing List Patch
https://git.kernel.org/stable/c/deb2949417677649e2413266d7ce8c2ff73952b4	Mailing List Patch
https://git.kernel.org/stable/c/eb7511bf9182292ef1df1082d23039e856d1ddfb	Mailing List Patch

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:5.15:rc1::::::
	cpe:2.3:o:linux:linux_kernel:5.15:rc2::::::
	cpe:2.3:o:linux:linux_kernel:5.15:rc3::::::

History

No history.

Information

Published : 2024-05-21 15:15

Updated : 2025-03-04 16:47

NVD link : CVE-2021-47407

Mitre link : CVE-2021-47407

CVE.ORG link : CVE-2021-47407

JSON object : View

Products Affected

linux

linux_kernel

CWE

CWE-476

NULL Pointer Dereference

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