CVE-2025-21669High· 7.8▾ TwilightIn 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 becaus…
▾ Twilight zone — High severity, or a signal on a lesser flaw
impact 42.9 · likelihood 0 · exploitation 0
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Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake.
Exploit-prediction probability, daily snapshots since Jul 31.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via NVD
Last analysed / modified upstream
0.2%
0.2% → 0.2%
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.
linux_kernel >= 5.5, < 5.15.177linux_kernel >= 5.16, < 6.1.127linux_kernel >= 6.2, < 6.6.74linux_kernel >= 6.7, < 6.12.11linux_kernel = 6.13Upgrade past the affected range:
linux_kernel 6.12.11Connected by shared product, vendor, weakness, or advisory.
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