What’s Vulnerable › Vulnerabilities

CVE-2021-47359: cifs: Fix soft lockup during fsstress

• Severity: medium (CVSS 5.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2024-05-21 · updated 2026-06-17
• Weakness: CWE-667

Description

In the Linux kernel, the following vulnerability has been resolved: cifs: Fix soft lockup during fsstress Below traces are observed during fsstress and system got hung. [ 130.698396] watchdog: BUG: soft lockup - CPU#6 stuck for 26s!

Affected products

• Linux kernel: before 5.14.9; 5.15-rc1, 5.15-rc2 — fixed in 5.14.9

How to fix

Upgrade to a fixed version: Linux kernel 5.14.9. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/71826b068884050d5fdd37fda857ba1539c513d3
• https://git.kernel.org/stable/c/9f6c7aff21f81ae8856da1f63847d1362d523409
• https://git.kernel.org/stable/c/71826b068884050d5fdd37fda857ba1539c513d3
• https://git.kernel.org/stable/c/9f6c7aff21f81ae8856da1f63847d1362d523409

Get alerted when CVE-2021-47359 or the next vulnerability affects your stack