vulnerability
Ubuntu: (CVE-2021-47407): linux-fips vulnerability
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 5 | (AV:L/AC:L/Au:S/C:N/I:N/A:C) | May 21, 2024 | Jun 26, 2025 | Aug 18, 2025 |
Severity
5
CVSS
(AV:L/AC:L/Au:S/C:N/I:N/A:C)
Published
May 21, 2024
Added
Jun 26, 2025
Modified
Aug 18, 2025
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]
Solution
no-fix-ubuntu-package
References
- CVE-2021-47407
- https://attackerkb.com/topics/CVE-2021-47407
- CWE-476
- URL-https://git.kernel.org/linus/eb7511bf9182292ef1df1082d23039e856d1ddfb
- URL-https://git.kernel.org/stable/c/4664318f73e496cd22c71b10888e75434a123e23
- URL-https://git.kernel.org/stable/c/deb2949417677649e2413266d7ce8c2ff73952b4
- URL-https://git.kernel.org/stable/c/eb7511bf9182292ef1df1082d23039e856d1ddfb
- URL-https://www.cve.org/CVERecord?id=CVE-2021-47407
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