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.
Does this matter?
Lower severity and a low EPSS score (0.25%). Track it; it rarely justifies an emergency change on its own.
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]
- CVSS 3.1
- 5.5 MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 0.25% probability · 16th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-476
- Affected
- linux/linux kernel
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
References
- https://git.kernel.org/stable/c/4664318f73e496cd22c71b10888e75434a123e23Mailing List, Patch
- https://git.kernel.org/stable/c/deb2949417677649e2413266d7ce8c2ff73952b4Mailing List, Patch
- https://git.kernel.org/stable/c/eb7511bf9182292ef1df1082d23039e856d1ddfbMailing List, Patch
- https://git.kernel.org/stable/c/4664318f73e496cd22c71b10888e75434a123e23Mailing List, Patch
- https://git.kernel.org/stable/c/deb2949417677649e2413266d7ce8c2ff73952b4Mailing List, Patch
- https://git.kernel.org/stable/c/eb7511bf9182292ef1df1082d23039e856d1ddfbMailing List, Patch
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.