Executive Summary
Informations | |||
---|---|---|---|
Name | CVE-2021-29657 | First vendor Publication | 2021-07-22 |
Vendor | Cve | Last vendor Modification | 2023-05-19 |
Security-Database Scoring CVSS v3
Cvss vector : CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H | |||
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Overall CVSS Score | 7.4 | ||
Base Score | 7.4 | Environmental Score | 7.4 |
impact SubScore | 5.9 | Temporal Score | 7.4 |
Exploitabality Sub Score | 1.4 | ||
Attack Vector | Local | Attack Complexity | High |
Privileges Required | None | User Interaction | None |
Scope | Unchanged | Confidentiality Impact | High |
Integrity Impact | High | Availability Impact | High |
Calculate full CVSS 3.0 Vectors scores |
Security-Database Scoring CVSS v2
Cvss vector : (AV:L/AC:M/Au:N/C:C/I:C/A:C) | |||
---|---|---|---|
Cvss Base Score | 6.9 | Attack Range | Local |
Cvss Impact Score | 10 | Attack Complexity | Medium |
Cvss Expoit Score | 3.4 | Authentication | None Required |
Calculate full CVSS 2.0 Vectors scores |
Detail
arch/x86/kvm/svm/nested.c in the Linux kernel before 5.11.12 has a use-after-free in which an AMD KVM guest can bypass access control on host OS MSRs when there are nested guests, aka CID-a58d9166a756. This occurs because of a TOCTOU race condition associated with a VMCB12 double fetch in nested_svm_vmrun. |
Original Source
Url : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-29657 |
CWE : Common Weakness Enumeration
% | Id | Name |
---|---|---|
50 % | CWE-416 | Use After Free |
50 % | CWE-367 | Time-of-check Time-of-use (TOCTOU) Race Condition |
CPE : Common Platform Enumeration
Sources (Detail)
Alert History
Date | Informations |
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2024-03-12 13:15:54 |
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2024-02-02 02:24:43 |
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2024-02-01 12:23:31 |
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2024-01-12 02:17:28 |
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2023-12-29 02:15:38 |
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2023-11-22 02:15:04 |
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2023-09-29 13:09:48 |
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2023-09-05 13:19:01 |
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2023-09-05 01:23:04 |
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2023-09-02 13:17:39 |
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2023-09-02 01:23:25 |
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2023-08-12 13:23:39 |
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2023-08-12 01:22:37 |
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2023-08-11 13:15:59 |
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2023-08-11 01:23:21 |
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2023-08-06 13:14:00 |
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2023-08-06 01:22:22 |
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2023-08-04 13:14:23 |
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2023-08-04 01:22:42 |
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2023-07-14 13:14:24 |
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2023-07-14 01:22:31 |
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2023-06-06 13:06:45 |
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2023-05-19 21:27:41 |
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2023-04-13 02:04:56 |
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2023-03-29 02:16:38 |
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2023-03-28 12:22:44 |
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2023-03-25 02:04:47 |
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2023-01-25 02:05:02 |
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2023-01-20 02:04:31 |
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2022-10-11 13:06:27 |
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2022-10-11 01:22:15 |
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2022-09-09 02:03:09 |
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2022-03-11 01:56:24 |
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2022-02-01 01:50:29 |
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2021-12-11 12:51:26 |
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2021-12-11 01:48:11 |
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2021-10-18 17:23:05 |
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2021-09-10 00:23:02 |
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2021-09-09 21:22:53 |
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2021-09-02 13:23:00 |
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2021-08-26 12:42:59 |
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2021-08-24 01:43:30 |
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2021-08-19 09:22:59 |
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2021-08-11 21:23:19 |
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2021-07-22 21:23:08 |
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