x/vulndb: potential Go vuln in github.com/moby/hyperkit: CVE-2021-32845

[GoVulnBot]

CVE-2021-32845 references github.com/moby/hyperkit, which may be a Go module.

Description:
HyperKit is a toolkit for embedding hypervisor capabilities in an application. In versions 0.20210107 and prior of HyperKit, the implementation of qnotify at pci_vtrnd_notify fails to check the return value of vq_getchain. This leads to struct iovec iov; being uninitialized and used to read memory in len = (int) read(sc->vrsc_fd, iov.iov_base, iov.iov_len); when an attacker is able to make vq_getchain fail. 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 41272a980197917df8e58ff90642d14dec8fe948.

References:

• NIST: https://nvd.nist.gov/vuln/detail/CVE-2021-32845
• JSON: https://github.com/CVEProject/cvelist/tree/1f54f52ca9cf3db80cb33a306c612fa3d729d8e4/2021/32xxx/CVE-2021-32845.json
• advisory: https://securitylab.github.com/advisories/GHSL-2021-054_057-moby-hyperkit/
• fix: Various fixes moby/hyperkit#313
• fix: moby/hyperkit@41272a9
• Imported by: https://pkg.go.dev/github.com/moby/hyperkit?tab=importedby

Cross references:
No existing reports found with this module or alias.

See doc/triage.md for instructions on how to triage this report.

modules:
  - module: github.com/moby/hyperkit
    packages:
      - package: hyperkit
description: |
    HyperKit is a toolkit for embedding hypervisor capabilities in an application. In versions 0.20210107 and prior of HyperKit, the implementation of `qnotify` at `pci_vtrnd_notify` fails to check the return value of `vq_getchain`. This leads to `struct iovec iov;` being uninitialized and used to read memory in `len = (int) read(sc->vrsc_fd, iov.iov_base, iov.iov_len);` when an attacker is able to make `vq_getchain` fail. 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 41272a980197917df8e58ff90642d14dec8fe948.
cves:
  - CVE-2021-32845
references:
  - advisory: https://securitylab.github.com/advisories/GHSL-2021-054_057-moby-hyperkit/
  - fix: https://github.com/moby/hyperkit/pull/313
  - fix: https://github.com/moby/hyperkit/commit/41272a980197917df8e58ff90642d14dec8fe948

[gopherbot]

Change https://go.dev/cl/471796 mentions this issue: data/excluded: batch add excluded reports