CVE-2021-32846
CVSS V2 None
CVSS V3 None
Description
HyperKit is a toolkit for embedding hypervisor capabilities in an application. In versions 0.20210107, function `pci_vtsock_proc_tx` in `virtio-sock` can lead to to uninitialized memory use. In this situation, there is a check for the return value to be less or equal to `VTSOCK_MAXSEGS`, but that check is not sufficient because the function can return `-1` if it finds an error it cannot recover from. Moreover, the negative return value will be used by `iovec_pull` in a while condition that can further lead to more corruption because the function is not designed to handle a negative `iov_len`. This issue may lead to a guest crashing the host causing a denial of service and, under certain circumstance, memory corruption. This issue is fixed in commit af5eba2360a7351c08dfd9767d9be863a50ebaba.
Overview
- CVE ID
- CVE-2021-32846
- Assigner
- security-advisories@github.com
- Vulnerability Status
- Analyzed
- Published Version
- 2023-02-17T23:15:12
- Last Modified Date
- 2023-02-28T20:28:54
Weakness Enumerations
CPE Configuration (Product)
| CPE | Vulnerable | Operator | Version Start | Version End |
|---|---|---|---|---|
| cpe:2.3:a:mobyproject:hyperkit:*:*:*:*:*:*:*:* | 1 | OR | 0.20210107 |
References
| Reference URL | Reference Tags |
|---|---|
| https://github.com/moby/hyperkit/commit/af5eba2360a7351c08dfd9767d9be863a50ebaba | Patch |
| https://github.com/moby/hyperkit/pull/313 | Patch |
| https://securitylab.github.com/advisories/GHSL-2021-054_057-moby-hyperkit/ | Third Party Advisory |
Sources
| Source Name | Source URL |
|---|---|
| NIST | https://nvd.nist.gov/vuln/detail/CVE-2021-32846 |
| MITRE | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-32846 |
History
| Created | Old Value | New Value | Data Type | Notes |
|---|---|---|---|---|
| 2023-04-17 07:58:34 | Added to TrackCVE | |||
| 2023-04-17 07:58:36 | Weakness Enumeration | new |