CVE-2025-21666
In the Linux kernel, the following vulnerability has been resolved:
vsock: prevent null-ptr-deref in vsock_*[has_data|has_space]
Recent reports have shown how we sometimes call vsock_*_has_data()
when a vsock socket has been de-assigned from a transport (see attached
links), but we shouldn't.
Previous commits should have solved the real problems, but we may have
more in the future, so to avoid null-ptr-deref, we can return 0
(no space, no data available) but with a warning.
This way the code should continue to run in a nearly consistent state
and have a warning that allows us to debug future problems.
vsock: prevent null-ptr-deref in vsock_*[has_data|has_space]
Recent reports have shown how we sometimes call vsock_*_has_data()
when a vsock socket has been de-assigned from a transport (see attached
links), but we shouldn't.
Previous commits should have solved the real problems, but we may have
more in the future, so to avoid null-ptr-deref, we can return 0
(no space, no data available) but with a warning.
This way the code should continue to run in a nearly consistent state
and have a warning that allows us to debug future problems.
Vendor
Product
CWE
Yayın Tarihi
2025-01-31 12:15:27
Güncelleme
2025-11-03 21:19:03
Source Identifier
416baaa9-dc9f-4396-8d5f-8c081fb06d67
KEV Date Added
-
Kategoriler
Referanslar
https://git.kernel.org/stable/c/91751e248256efc111e52e15115840c35d85abaf
https://git.kernel.org/stable/c/9e5fed46ccd2c34c5fa5a9c8825ce4823fdc853e
https://git.kernel.org/stable/c/b52e50dd4fabd12944172bd486a4f4853b7f74dd
https://git.kernel.org/stable/c/bc9c49341f9728c31fe248c5fbba32d2e81a092b
https://git.kernel.org/stable/c/c23d1d4f8efefb72258e9cedce29de10d057f8ca
https://git.kernel.org/stable/c/daeac89cdb03d30028186f5ff7dc26ec8fa843e7
https://lists.debian.org/debian-lts-announce/2025/03/msg00001.html
https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html