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VULNERABILITIES

CVE-2025-21669 Details

Description

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->transport` at NULL, leading to a NULL pointer dereference.

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:5.5 MEDIUMVector:CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CNA: CISA-ADPCVSS-B:5.5 MEDIUMVector:CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

References to Advisories, Solutions, and Tools

By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.

URLSource(s)Tag(s)
https://cert-portal.siemens.com/productcert/html/ssa-265688.html siemens-SADP
https://git.kernel.org/stable/c/18a7fc371d1dbf8deff16c2dd9292bcc73f43040 kernel.orgPatch
https://git.kernel.org/stable/c/2cb7c756f605ec02ffe562fb26828e4bcc5fdfc1 kernel.orgPatch
https://git.kernel.org/stable/c/6486915fa661584d70e8e7e4068c6c075c67dd6d kernel.orgPatch
https://git.kernel.org/stable/c/677579b641af109613564460a4e3bdcb16850b61 kernel.orgPatch

see all 9 references

Weakness Enumeration

CWE-IDCWE NameSource
CWE-476NULL Pointer Dereference[email protected]
CWE-476NULL Pointer DereferenceCISA-ADP

Affected Products

ProductVersions
linux linux kernel
>= 5.5, < 5.15.177
>= 5.16, < 6.1.127
>= 6.2, < 6.6.74
>= 6.7, < 6.12.11
6.13 rc1

CPE

  • cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:6.13:rc1:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:6.13:rc2:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:6.13:rc3:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:6.13:rc4:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:6.13:rc5:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:6.13:rc6:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:6.13:rc7:*:*:*:*:*:*

Remediation

  • No remediation found in references.

Change History

10 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2025-21669
NVD Published Date:
Jan 31, 2025
NVD Last Modified:
Jul 30, 2026
Source:
kernel.org
CVE-2025-21669 Details - Not Deferred