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CVE-2021-47407

Disclosure Date: May 21, 2024
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Description

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]

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CVSS V3 Severity and Metrics
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General Information

Vendors

  • Linux

Products

  • Linux

Additional Info

Technical Analysis