Answer in brief
CVE-2022-50314 records a Medium severity (CVSS 5.5) vulnerability in nbd: Fix hung when signal interrupts nbd_start_device_ioctl(). The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 5.5. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Product | Affected versions | Fixed versions |
|---|---|---|
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | Not reported | Not reported |
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=5ea8d10802ec4c153a6e21eebaf412e2abd29736 <3ba3846cb3e2fb3c6fbf79e998472821b298419e || >=5ea8d10802ec4c153a6e21eebaf412e2abd29736 <c7b4641bd2395c2f3cd3b0a0cbf292ed9d489398 || >=5ea8d10802ec4c153a6e21eebaf412e2abd29736 <3575949513ea3b387b30dac1e69468a923c86caf || >=5ea8d10802ec4c153a6e21eebaf412e2abd29736 <b2700f98b3f4dd19fb4315b70581e5caff89eb49 || >=5ea8d10802ec4c153a6e21eebaf412e2abd29736 <c0d73be0af8c1310713bc39a8d7a22e35084e14f || >=5ea8d10802ec4c153a6e21eebaf412e2abd29736 <62006a72b05e0d38727eef5188700f2488be5e89 || >=5ea8d10802ec4c153a6e21eebaf412e2abd29736 <35fb7d4a53d9e36d1b91161ea9870d9c6d57dccf || >=5ea8d10802ec4c153a6e21eebaf412e2abd29736 <1de7c3cf48fc41cd95adb12bd1ea9033a917798a | 3ba3846cb3e2fb3c6fbf79e998472821b298419e, c7b4641bd2395c2f3cd3b0a0cbf292ed9d489398, 3575949513ea3b387b30dac1e69468a923c86caf, b2700f98b3f4dd19fb4315b70581e5caff89eb49, c0d73be0af8c1310713bc39a8d7a22e35084e14f, 62006a72b05e0d38727eef5188700f2488be5e89, 35fb7d4a53d9e36d1b91161ea9870d9c6d57dccf, 1de7c3cf48fc41cd95adb12bd1ea9033a917798a |
| Linux/Linuxgeneric | 4.12 | Not reported |
Published upstream
Sep 15, 2025
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Nov 5, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Nov 5, 2026
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().
Quoted source text, attributed separately from HOL analysis.