CVE-2022-50430 mmc: vub300: fix warning - do not call blocking ops when !TASK_RUNNING

Medium 5.5 Published 1 Oct 2025 Updated 11 May 2026

A kernel warning triggered by improper task state handling in the vub300 MMC driver can lead to system instability or denial of service.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Local or same network only
Victim action needed: Not needed
Fix: Available

What is CVE-2022-50430?

CVE-2022-50430 is a medium-severity denial of service vulnerability in Linux kernel, published on 1 Oct 2025. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

In the Linux kernel, the following vulnerability has been resolved:

mmc: vub300: fix warning - do not call blocking ops when !TASK_RUNNING

vub300_enable_sdio_irq() works with mutex and need TASK_RUNNING here. Ensure that we mark current as TASK_RUNNING for sleepable context.

[ 77.554641] do not call blocking ops when !TASK_RUNNING; state=1 set at [<ffffffff92a72c1d>] sdio_irq_thread+0x17d/0x5b0 [ 77.554652] WARNING: CPU: 2 PID: 1983 at kernel/sched/core.c:9813 __might_sleep+0x116/0x160 [ 77.554905] CPU: 2 PID: 1983 Comm: ksdioirqd/mmc1 Tainted: G OE 6.1.0-rc5 #1 [ 77.554910] Hardware name: Intel(R) Client Systems NUC8i7BEH/NUC8BEB, BIOS BECFL357.86A.0081.2020.0504.1834 05/04/2020 [ 77.554912] RIP: 0010:__might_sleep+0x116/0x160 [ 77.554920] RSP: 0018:ffff888107b7fdb8 EFLAGS: 00010282 [ 77.554923] RAX: 0000000000000000 RBX: ffff888118c1b740 RCX: 0000000000000000 [ 77.554926] RDX: 0000000000000001 RSI: 0000000000000004 RDI: ffffed1020f6ffa9 [ 77.554928] RBP: ffff888107b7fde0 R08: 0000000000000001 R09: ffffed1043ea60ba [ 77.554930] R10: ffff88821f5305cb R11: ffffed1043ea60b9 R12: ffffffff93aa3a60 [ 77.554932] R13: 000000000000011b R14: 7fffffffffffffff R15: ffffffffc0558660 [ 77.554934] FS: 0000000000000000(0000) GS:ffff88821f500000(0000) knlGS:0000000000000000 [ 77.554937] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 77.554939] CR2: 00007f8a44010d68 CR3: 000000024421a003 CR4: 00000000003706e0 [ 77.554942] Call Trace: [ 77.554944] <TASK> [ 77.554952] mutex_lock+0x78/0xf0 [ 77.554973] vub300_enable_sdio_irq+0x103/0x3c0 [vub300] [ 77.554981] sdio_irq_thread+0x25c/0x5b0 [ 77.555006] kthread+0x2b8/0x370 [ 77.555017] ret_from_fork+0x1f/0x30 [ 77.555023] </TASK> [ 77.555025] ---[ end trace 0000000000000000 ]---

Which versions are affected by CVE-2022-50430?

It affects 1 product.

Products include Linux kernel.

How do I fix CVE-2022-50430?

Apply the vendor's patch.

Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.

Is CVE-2022-50430 being exploited?

There is no known exploitation of CVE-2022-50430 in the wild and no public exploit code.

All Linux kernel vulnerabilities

Sources

Also known as DEBIAN-CVE-2022-50430, GHSA-g6h8-fgfc-g79v, UBUNTU-CVE-2022-50430.