What is CVE-2022-50639?

CVE-2022-50639 is a unscored severity Linux kernel vulnerability, affecting Linux kernel versions from 5.14 onward and patched in 5.15.75, 6.0.4 and 6.1. CVE-2022-50639 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2022-50639?

CVE-2022-50639 has a CVSS score of pending NVD analysis out of 10, rated awaiting scoring severity.

Is there a patch available for CVE-2022-50639?

Yes, CVE-2022-50639 has been patched. Fixed versions include 5.15.75, 6.0.4 and 6.1. If you are running Linux kernel 5.14 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2022-50639 actively exploited?

CVE-2022-50639 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2022-50639

In the Linux kernel, the following vulnerability has been resolved: io-wq: Fix memory leak in worker creation If the CPU mask allocation for a node fails, then the memory allocated for the 'io_wqe' struct of the current node doesn't get freed on the error handling path, since it has not yet been added to the 'wqes' array. This was spotted when fuzzing v6.1-rc1 with Syzkaller: BUG: memory leak unreferenced object 0xffff8880093d5000 (size 1024): comm "syz-executor.2", pid 7701, jiffies 4295048595 (age 13.900s) hex dump (first 32 bytes): 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ backtrace: [<00000000cb463369>] __kmem_cache_alloc_node+0x18e/0x720 [<00000000147a3f9c>] kmalloc_node_trace+0x2a/0x130 [<000000004e107011>] io_wq_create+0x7b9/0xdc0 [<00000000c38b2018>] io_uring_alloc_task_context+0x31e/0x59d [<00000000867399da>] __io_uring_add_tctx_node.cold+0x19/0x1ba [<000000007e0e7a79>] io_uring_setup.cold+0x1b80/0x1dce [<00000000b545e9f6>] __x64_sys_io_uring_setup+0x5d/0x80 [<000000008a8a7508>] do_syscall_64+0x5d/0x90 [<000000004ac08bec>] entry_SYSCALL_64_after_hwframe+0x63/0xcd

Package Linux Kernel

Published 2025-12-09

Last modified 2026-04-15

Patch available

Yes

Affected versions

Linux kernel versions 5.14 and later are affected. Fixed in 5.15.75, 6.0.4, 6.1 and their respective stable series.

Affected from

≥ 5.14

Fixed in

✓ 5.15.75 5.15.x ✓ 6.0.4 6.0.x ✓ 6.1

References

The following references provide additional information about CVE-2022-50639 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.

Kernel patch commit
https://git.kernel.org/stable/c/996d3efeb091c503afd3ee6b5e20eabf446fd955
Patch
Kernel patch commit
https://git.kernel.org/stable/c/b6e2c54be37d5eb4f6666e6aa59cd0581c7ffc3c
Patch
Kernel patch commit
https://git.kernel.org/stable/c/ed981911a7c90a604f4a2bee908ab07e3b786aca
Patch

Frequently asked questions

What is CVE-2022-50639?

CVE-2022-50639 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 5.14 onward and has been patched in 5.15.75, 6.0.4 and 6.1. CVE-2022-50639 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
Is there a patch available for CVE-2022-50639?

Yes — CVE-2022-50639 has been patched. Fixed versions include 5.15.75, 6.0.4 and 6.1. If you are running Linux kernel 5.14 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2022-50639 actively exploited?

No — CVE-2022-50639 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.