In the Linux kernel, the following vulnerability has been resolved:
nbd: Fix hung when signal interrupts nbd_start_device_ioctl()
syzbot reported hung task [1]. The following program is a simplified
version of the reproducer:
int main(void)
{
int sv[2], fd;
if (socketpair(AF_UNIX, SOCK_STREAM, 0, sv) < 0)
return 1;
if ((fd = open("/dev/nbd0", 0)) < 0)
return 1;
if (ioctl(fd, NBD_SET_SIZE_BLOCKS, 0x81) < 0)
return 1;
if (ioctl(fd, NBD_SET_SOCK, sv[0]) < 0)
return 1;
if (ioctl(fd, NBD_DO_IT) < 0)
return 1;
return 0;
}
When signal interrupt nbd_start_device_ioctl() waiting the condition
atomic_read(&config->recv_threads) == 0, the task can hung because it
waits the completion of the inflight IOs.
This patch fixes the issue by clearing queue, not just shutdown, when
signal interrupt nbd_start_device_ioctl().
References
Configurations
Configuration 1 (hide)
|
History
04 Dec 2025, 15:22
| Type | Values Removed | Values Added |
|---|---|---|
| First Time |
Linux
Linux linux Kernel |
|
| CPE | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | |
| CVSS |
v2 : v3 : |
v2 : unknown
v3 : 5.5 |
| References | () https://git.kernel.org/stable/c/1de7c3cf48fc41cd95adb12bd1ea9033a917798a - Patch | |
| References | () https://git.kernel.org/stable/c/3575949513ea3b387b30dac1e69468a923c86caf - Patch | |
| References | () https://git.kernel.org/stable/c/35fb7d4a53d9e36d1b91161ea9870d9c6d57dccf - Patch | |
| References | () https://git.kernel.org/stable/c/3ba3846cb3e2fb3c6fbf79e998472821b298419e - Patch | |
| References | () https://git.kernel.org/stable/c/62006a72b05e0d38727eef5188700f2488be5e89 - Patch | |
| References | () https://git.kernel.org/stable/c/b2700f98b3f4dd19fb4315b70581e5caff89eb49 - Patch | |
| References | () https://git.kernel.org/stable/c/c0d73be0af8c1310713bc39a8d7a22e35084e14f - Patch | |
| References | () https://git.kernel.org/stable/c/c7b4641bd2395c2f3cd3b0a0cbf292ed9d489398 - Patch | |
| CWE | NVD-CWE-noinfo |
15 Sep 2025, 15:22
| Type | Values Removed | Values Added |
|---|---|---|
| New CVE |
Information
Published : 2025-09-15 15:15
Updated : 2025-12-04 15:22
NVD link : CVE-2022-50314
Mitre link : CVE-2022-50314
CVE.ORG link : CVE-2022-50314
JSON object : View
Products Affected
linux
- linux_kernel
CWE