CVE-2021-47296
KVM: PPC: Fix kvm_arch_vcpu_ioctl vcpu_load leak
Description
In the Linux kernel, the following vulnerability has been resolved: KVM: PPC: Fix kvm_arch_vcpu_ioctl vcpu_load leak vcpu_put is not called if the user copy fails. This can result in preempt notifier corruption and crashes, among other issues.
INFO
Published Date :
May 21, 2024, 3:15 p.m.
Last Modified :
June 23, 2025, 8:19 p.m.
Remotely Exploit :
No
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | MEDIUM | [email protected] |
Solution
- Update the affected kernel packages.
- Reboot the system after updating.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2021-47296.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2021-47296 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2021-47296
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2021-47296 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2021-47296 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Initial Analysis by [email protected]
Jun. 23, 2025
Action Type Old Value New Value Added CVSS V3.1 AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Added CWE CWE-401 Added CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:5.14:rc1:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:5.14:rc2:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 4.20 up to (excluding) 5.4.136 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.5 up to (excluding) 5.10.54 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.11 up to (excluding) 5.13.6 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 4.18 up to (excluding) 4.19.199 Added Reference Type CVE: https://git.kernel.org/stable/c/9bafc34dc4ad0cef18727c557f21ed3c3304df50 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/9bafc34dc4ad0cef18727c557f21ed3c3304df50 Types: Patch Added Reference Type CVE: https://git.kernel.org/stable/c/a4a488915feaad38345cc01b80d52e8200ff5209 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/a4a488915feaad38345cc01b80d52e8200ff5209 Types: Patch Added Reference Type CVE: https://git.kernel.org/stable/c/bc4188a2f56e821ea057aca6bf444e138d06c252 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/bc4188a2f56e821ea057aca6bf444e138d06c252 Types: Patch Added Reference Type CVE: https://git.kernel.org/stable/c/e14ef1095387f764d95614d3ec9e4d07c82a3533 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/e14ef1095387f764d95614d3ec9e4d07c82a3533 Types: Patch Added Reference Type CVE: https://git.kernel.org/stable/c/f38527f1890543cdfca8dfd06f75f9887cce6151 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/f38527f1890543cdfca8dfd06f75f9887cce6151 Types: Patch -
CVE Modified by af854a3a-2127-422b-91ae-364da2661108
Nov. 21, 2024
Action Type Old Value New Value Added Reference https://git.kernel.org/stable/c/9bafc34dc4ad0cef18727c557f21ed3c3304df50 Added Reference https://git.kernel.org/stable/c/a4a488915feaad38345cc01b80d52e8200ff5209 Added Reference https://git.kernel.org/stable/c/bc4188a2f56e821ea057aca6bf444e138d06c252 Added Reference https://git.kernel.org/stable/c/e14ef1095387f764d95614d3ec9e4d07c82a3533 Added Reference https://git.kernel.org/stable/c/f38527f1890543cdfca8dfd06f75f9887cce6151 -
CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
May. 28, 2024
Action Type Old Value New Value -
CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
May. 21, 2024
Action Type Old Value New Value Added Description In the Linux kernel, the following vulnerability has been resolved: KVM: PPC: Fix kvm_arch_vcpu_ioctl vcpu_load leak vcpu_put is not called if the user copy fails. This can result in preempt notifier corruption and crashes, among other issues. Added Reference kernel.org https://git.kernel.org/stable/c/9bafc34dc4ad0cef18727c557f21ed3c3304df50 [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/f38527f1890543cdfca8dfd06f75f9887cce6151 [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/e14ef1095387f764d95614d3ec9e4d07c82a3533 [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/a4a488915feaad38345cc01b80d52e8200ff5209 [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/bc4188a2f56e821ea057aca6bf444e138d06c252 [No types assigned]