CVSS 3.1
5.5 mediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HCVE-2021-47407
Medium (5.5) in linux linux kernel. EPSS 0.2% chance of exploitation in the next 30 days.
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
- EPSS
- 0.2% chance of exploitation in the next 30 days; higher than 16% of CVEs (scores of 2026-11-01)
- CWE
- CWE-476
- Published
- Modified
- Record from
- the NVD, synced
Affected
- linux:linux_kernel
References
- https://git.kernel.org/stable/c/4664318f73e496cd22c71b10888e75434a123e23
- https://git.kernel.org/stable/c/deb2949417677649e2413266d7ce8c2ff73952b4
- https://git.kernel.org/stable/c/eb7511bf9182292ef1df1082d23039e856d1ddfb
- https://git.kernel.org/stable/c/4664318f73e496cd22c71b10888e75434a123e23
- https://git.kernel.org/stable/c/deb2949417677649e2413266d7ce8c2ff73952b4