# CVE-2022-50314: linux: In the Linux kernel, the following vulnerability has been resolved:  nbd: Fix hung when signal interrupts nbd_start_d...

CVE-2022-50314 is fixed in linux on 1 platform, first by DEBIAN-CVE-2022-50314, released September 15, 2025. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2022-50314
- Priority: Routine
- CVSS: 5.5 (medium)
- EPSS: 0.0016
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Sep 15, 2025

## Description

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().

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | linux Debian 12.15 (bookworm) | 6.0.3-1 | [DEBIAN-CVE-2022-50314](https://patchblox.com/security/data/fix/linux/debian-cve-2022-50314.md) | Sep 15, 2025 |
| Linux | linux Debian 13.5 (trixie) | 6.0.3-1 | [DEBIAN-CVE-2022-50314](https://patchblox.com/security/data/fix/linux/debian-cve-2022-50314.md) | Sep 15, 2025 |
| Linux | linux Debian 14 | 6.0.3-1 | [DEBIAN-CVE-2022-50314](https://patchblox.com/security/data/fix/linux/debian-cve-2022-50314.md) | Sep 15, 2025 |

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