CVE-2021-47024
vsock/virtio: free queued packets when closing socket
Severity Score
Exploit Likelihood
Affected Versions
Public Exploits
0Exploited in Wild
-Decision
Descriptions
In the Linux kernel, the following vulnerability has been resolved:
vsock/virtio: free queued packets when closing socket
As reported by syzbot [1], there is a memory leak while closing the
socket. We partially solved this issue with commit ac03046ece2b
("vsock/virtio: free packets during the socket release"), but we
forgot to drain the RX queue when the socket is definitely closed by
the scheduled work.
To avoid future issues, let's use the new virtio_transport_remove_sock()
to drain the RX queue before removing the socket from the af_vsock lists
calling vsock_remove_sock().
[1] https://syzkaller.appspot.com/bug?extid=24452624fc4c571eedd9
En el kernel de Linux se ha resuelto la siguiente vulnerabilidad: vsock/virtio: paquetes libres en cola al cerrar el socket Según lo informado por syzbot [1], hay una pérdida de memoria al cerrar el socket. Resolvimos parcialmente este problema con el compromiso ac03046ece2b ("vsock/virtio: paquetes libres durante el lanzamiento del socket"), pero nos olvidamos de vaciar la cola RX cuando el trabajo programado cierra definitivamente el socket. Para evitar problemas futuros, usemos el nuevo virtio_transport_remove_sock() para drenar la cola RX antes de eliminar el socket de las listas af_vsock llamando a vsock_remove_sock(). [1] https://syzkaller.appspot.com/bug?extid=24452624fc4c571eedd9
CVSS Scores
SSVC
- Decision:Track
Timeline
- 2024-02-27 CVE Reserved
- 2024-02-28 CVE Published
- 2024-02-29 EPSS Updated
- 2024-08-04 CVE Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
- ---------- First Exploit
CWE
CAPEC
References (10)
| URL | Tag | Source |
|---|---|---|
| https://git.kernel.org/stable/c/ac03046ece2b158ebd204dfc4896fd9f39f0e6c8 | Vuln. Introduced | |
| https://git.kernel.org/stable/c/4ea082cd3c400cd5bb36a7beb7e441bf3e29350d | Vuln. Introduced | |
| https://git.kernel.org/stable/c/4e539fa2dec4db3405e47002f2878aa4a99eb68b | Vuln. Introduced | |
| https://git.kernel.org/stable/c/4af8a327aeba102aaa9b78f3451f725bc590b237 | Vuln. Introduced | |
| https://git.kernel.org/stable/c/51adb8ebe8c1d80528fc2ea863cfea9d32d2c52b | Vuln. Introduced | |
| https://git.kernel.org/stable/c/7d29c9ad0ed525c1b10e29cfca4fb1eece1e93fb | Vuln. Introduced |
| URL | Date | SRC |
|---|
| URL | Date | SRC |
|---|
Affected Vendors, Products, and Versions
| Vendor | Product | Version | Other | Status | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Vendor | Product | Version | Other | Status | <-- --> | Vendor | Product | Version | Other | Status |
| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 5.2 < 5.10.37 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.2 < 5.10.37" | en |
Affected
| ||||||
| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 5.2 < 5.11.21 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.2 < 5.11.21" | en |
Affected
| ||||||
| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 5.2 < 5.12.4 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.2 < 5.12.4" | en |
Affected
| ||||||
| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 5.2 < 5.13 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.2 < 5.13" | en |
Affected
| ||||||
| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | 4.9.179 Search vendor "Linux" for product "Linux Kernel" and version "4.9.179" | en |
Affected
| ||||||
| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | 4.14.122 Search vendor "Linux" for product "Linux Kernel" and version "4.14.122" | en |
Affected
| ||||||
| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | 4.19.46 Search vendor "Linux" for product "Linux Kernel" and version "4.19.46" | en |
Affected
| ||||||
| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | 5.0.19 Search vendor "Linux" for product "Linux Kernel" and version "5.0.19" | en |
Affected
| ||||||
| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | 5.1.5 Search vendor "Linux" for product "Linux Kernel" and version "5.1.5" | en |
Affected
| ||||||