CVEvulnerability

CVE-2025-21669

5.5 MEDIUM Published 2025-01-31 Modified 2026-07-30 Official page ↗
Status
Modified
Published
2025-01-31
Last modified
2026-07-30
Assigner
416baaa9-dc9f-4396-8d5f-8c081fb06d67
CVSS 3.1 (416baaa9-dc9f-4396-8d5f-8c081fb06d67)
7.8 HIGH — CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS 3.1 ([email protected])
5.5 MEDIUM — CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CVSS 3.1 (134c704f-9b21-4f2e-91b3-4a467353bcc0)
5.5 MEDIUM — CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Weaknesses
CWE-476

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.

Affected configurations

• linux linux kernel (>= 5.5 < 5.15.177) • linux linux kernel (>= 5.16 < 6.1.127) • linux linux kernel (>= 6.2 < 6.6.74) • linux linux kernel (>= 6.7 < 6.12.11) • linux linux kernel 6.13

Related

Weakness · CWE (1)

  • CWE-476 NULL Pointer Dereference weakness

References