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NVD / CVE Program· CNA Linux

CVE-2022-50771: rcu: Fix __this_cpu_read() lockdep warning in rcu_force_quiescent_state()

Noroxi assessment

Priority: Monitor (action score 0/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.24% (FIRST EPSS).
  • Fixed version: Linux Linux 3d92527a919edd1aa381bdd6c299dd75a8167396, 5a52380b8193cf8be6c4a6b94b86ef64ed80c0dc, 80a3e7ab477b3655615fc1627c88c248d4ad28d9.

Low priority for now. Upgrade to Linux Linux 3d92527a919edd1aa381bdd6c299dd75a8167396, 5a52380b8193cf8be6c4a6b94b86ef64ed80c0dc, 80a3e7ab477b3655615fc1627c88c248d4ad28d9 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

In the Linux kernel, the following vulnerability has been resolved: rcu: Fix __this_cpu_read() lockdep warning in rcu_force_quiescent_state() Running rcutorture with non-zero fqs_duration module parameter in a kernel built with CONFIG_PREEMPTION=y results in the following splat: BUG: using __this_cpu_read() in preemptible [00000000] code: rcu_torture_fqs/398 caller is __this_cpu_preempt_check+0x13/0x20 CPU: 3 PID: 398 Comm: rcu_torture_fqs Not tainted 6.0.0-rc1-yoctodev-standard+ Call Trace: <TASK> dump_stack_lvl+0x5b/0x86 dump_stack+0x10/0x16 check_preemption_disabled+0xe5/0xf0 __this_cpu_preempt_check+0x13/0x20 rcu_force_quiescent_state.part.0+0x1c/0x170 rcu_force_quiescent_state+0x1e/0x30 rcu_torture_fqs+0xca/0x160 ? rcu_torture_boost+0x430/0x430 kthread+0x192/0x1d0 ? kthread_complete_and_exit+0x30/0x30 ret_from_fork+0x22/0x30 </TASK> The problem is that rcu_force_quiescent_state() uses __this_cpu_read() in preemptible code instead of the proper raw_cpu_read(). This commit therefore changes __this_cpu_read() to raw_cpu_read().

—No exploit Fix available
Published
Dec 24, 2025
Updated
Jun 17, 2026
EPSS
0.2% · 15th percentile
CWE
—

Report tools

JSON

Action score

0

Monitor

Low priority for now.

CVSS
0 / 40 · —
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.2%

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

—

Versions reported by the vendor

Affected version ranges reported by the assigning authority (Linux). Independent of NVD's CPE analysis and usually ahead of it.

  • Linux Linux

    • 3.17affected
    • d860d40327dde251d508a234fa00bd0d90fbb656 and later · before 3d92527a919edd1aa381bdd6c299dd75a8167396affected · git
    • d860d40327dde251d508a234fa00bd0d90fbb656 and later · before 5a52380b8193cf8be6c4a6b94b86ef64ed80c0dcaffected · git
    • d860d40327dde251d508a234fa00bd0d90fbb656 and later · before 98a5b1265a36e9d843a51ddd6c9fa02da50d2c57affected · git
    • d860d40327dde251d508a234fa00bd0d90fbb656 and later · before a74af9b937707b42c3fd041aae1ed4ce2f337307affected · git
    • d860d40327dde251d508a234fa00bd0d90fbb656 and later · before 80a3e7ab477b3655615fc1627c88c248d4ad28d9affected · git
    • d860d40327dde251d508a234fa00bd0d90fbb656 and later · before ceb1c8c9b8aa9199da46a0f29d2d5f08d9b44c15affected · git
    • before 3.17not affected · semver
    • 5.4.229 and later · up to and including 5.4.*not affected · semver
    • 5.10.163 and later · up to and including 5.10.*not affected · semver

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 6.1.4-16.1.4-1

Same product

linux: all records

Other highest-scoring records for the same primary product.

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    40Plan
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  • CVE-2026-74475vxlan: use neigh_ha_snapshot() in route_shortcircuit()
    40Plan

Published before and after this one in the same product

  • ← EarlierCVE-2022-50769Dec 24, 2025 · mmc: mxcmmc: fix return value check of mmc_add_host()
    0Monitor
  • ← EarlierCVE-2022-50770Dec 24, 2025 · ocfs2: fix memory leak in ocfs2_mount_volume()
    0Monitor
  • Later →CVE-2022-50772Dec 24, 2025 · netdevsim: fix memory leak in nsim_bus_dev_new()
    0Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
Linux Linux3d92527a919edd1aa381bdd6c299dd75a8167396Vendor (CNA)
Linux Linux5a52380b8193cf8be6c4a6b94b86ef64ed80c0dcVendor (CNA)
Linux Linux80a3e7ab477b3655615fc1627c88c248d4ad28d9Vendor (CNA)
Linux Linux98a5b1265a36e9d843a51ddd6c9fa02da50d2c57Vendor (CNA)
Linux Linuxa74af9b937707b42c3fd041aae1ed4ce2f337307Vendor (CNA)
Linux Linuxceb1c8c9b8aa9199da46a0f29d2d5f08d9b44c15Vendor (CNA)
debian:linux6.1.4-1 · Debian:12Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

No history yet (it accumulates with the daily EPSS job).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

No CVSS vector for this record, so attack conditions can't be derived.

Weakness class (CWE)

—

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

Change log

  1. Fix✗ → ✓

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References

Show all references (5 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

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