CVE-2022-50771

See a problem?
Please try reporting it to the source first.
Source
https://cve.org/CVERecord?id=CVE-2022-50771
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2022-50771.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2022-50771
Downstream
Published
2025-12-24T13:06:00.412Z
Modified
2026-03-12T03:26:53.313394Z
Summary
rcu: Fix __this_cpu_read() lockdep warning in rcu_force_quiescent_state()
Details

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

rcu: Fix _thiscpuread() lockdep warning in rcuforcequiescentstate()

Running rcutorture with non-zero fqsduration module parameter in a kernel built with CONFIGPREEMPTION=y results in the following splat:

BUG: using __thiscpuread() in preemptible [00000000] code: rcutorturefqs/398 caller is __thiscpupreemptcheck+0x13/0x20 CPU: 3 PID: 398 Comm: rcutorturefqs Not tainted 6.0.0-rc1-yoctodev-standard+ Call Trace: <TASK> dumpstacklvl+0x5b/0x86 dumpstack+0x10/0x16 checkpreemptiondisabled+0xe5/0xf0 __thiscpupreemptcheck+0x13/0x20 rcuforcequiescentstate.part.0+0x1c/0x170 rcuforcequiescentstate+0x1e/0x30 rcutorturefqs+0xca/0x160 ? rcutortureboost+0x430/0x430 kthread+0x192/0x1d0 ? kthreadcompleteandexit+0x30/0x30 retfromfork+0x22/0x30 </TASK>

The problem is that rcuforcequiescent_state() uses __thiscpuread() in preemptible code instead of the proper rawcpuread(). This commit therefore changes __thiscpuread() to rawcpuread().

Database specific 
{
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/50xxx/CVE-2022-50771.json",
    "cna_assigner": "Linux"
}
References

Affected packages

Git / git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git

Affected ranges

Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
d860d40327dde251d508a234fa00bd0d90fbb656
Fixed
3d92527a919edd1aa381bdd6c299dd75a8167396
Fixed
5a52380b8193cf8be6c4a6b94b86ef64ed80c0dc
Fixed
98a5b1265a36e9d843a51ddd6c9fa02da50d2c57
Fixed
a74af9b937707b42c3fd041aae1ed4ce2f337307
Fixed
80a3e7ab477b3655615fc1627c88c248d4ad28d9
Fixed
ceb1c8c9b8aa9199da46a0f29d2d5f08d9b44c15

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2022-50771.json"

Linux / Kernel

Package

Name
Kernel

Affected ranges

Type
ECOSYSTEM
Events
Introduced
3.17.0
Fixed
5.4.229
Type
ECOSYSTEM
Events
Introduced
5.5.0
Fixed
5.10.163
Type
ECOSYSTEM
Events
Introduced
5.11.0
Fixed
5.15.86
Type
ECOSYSTEM
Events
Introduced
5.16.0
Fixed
6.0.16
Type
ECOSYSTEM
Events
Introduced
6.1.0
Fixed
6.1.2

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2022-50771.json"