AZL-56411
See a problem?- Import Source
- https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-56411.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/AZL-56411
- Upstream
- Published
- 2025-01-31T12:15:28Z
- Modified
- 2026-04-01T05:18:53.548342Z
- Severity
-
- 5.5 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
- Summary
- CVE-2025-21669 affecting package kernel for versions less than 5.15.180.1-1
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
vsock/virtio: discard packets if the transport changes
If the socket has been de-assigned or assigned to another transport, we must discard any packets received because they are not expected and would cause issues when we access vsk->transport.
A possible scenario is described by Hyunwoo Kim in the attached link, where after a first connect() interrupted by a signal, and a second connect() failed, we can find
vsk->transportat NULL, leading to a NULL pointer dereference. - References