CVE-2021-47407 (GCVE-0-2021-47407)

Vulnerability from cvelistv5 – Published: 2024-05-21 15:03 – Updated: 2025-12-18 11:37
VLAI?
Title
KVM: x86: Handle SRCU initialization failure during page track init
Summary
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]
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 0eb05bf290cfe8610d9680b49abef37febd1c38a , < deb2949417677649e2413266d7ce8c2ff73952b4 (git)
Affected: 0eb05bf290cfe8610d9680b49abef37febd1c38a , < 4664318f73e496cd22c71b10888e75434a123e23 (git)
Affected: 0eb05bf290cfe8610d9680b49abef37febd1c38a , < eb7511bf9182292ef1df1082d23039e856d1ddfb (git)
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    Linux Linux Affected: 4.6
Unaffected: 0 , < 4.6 (semver)
Unaffected: 5.10.71 , ≤ 5.10.* (semver)
Unaffected: 5.14.10 , ≤ 5.14.* (semver)
Unaffected: 5.15 , ≤ * (original_commit_for_fix)
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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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