What’s Vulnerable › Vulnerabilities

CVE-2021-47322: NFSv4: Fix an Oops in pnfs_mark_request_commit() when doing O_DIRECT

• Severity: high (CVSS 7.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% 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-787

Description

In the Linux kernel, the following vulnerability has been resolved: NFSv4: Fix an Oops in pnfs_mark_request_commit() when doing O_DIRECT Fix an Oopsable condition in pnfs_mark_request_commit() when we're putting a set of writes on the commit list to reschedule them after a failed pNFS attempt.

Affected products

• Linux kernel: from 5.7 before 5.10.52; from 5.11 before 5.12.19; from 5.13 before 5.13.4 — fixed in 5.10.52, 5.12.19, 5.13.4

How to fix

Upgrade to a fixed version: Linux kernel 5.10.52, 5.12.19, 5.13.4. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/3731d44bba8e0116b052b1b374476c5f6dd9a456
• https://git.kernel.org/stable/c/5c7ef8a3705542136a1e19b070e951f0730b2153
• https://git.kernel.org/stable/c/7aec9f862411906f8c27071ba65a1e110ad7d2fd
• https://git.kernel.org/stable/c/7c96a2ee45be41d5a167e6332d202086752c36bb
• https://git.kernel.org/stable/c/3731d44bba8e0116b052b1b374476c5f6dd9a456
• https://git.kernel.org/stable/c/5c7ef8a3705542136a1e19b070e951f0730b2153
• https://git.kernel.org/stable/c/7aec9f862411906f8c27071ba65a1e110ad7d2fd
• https://git.kernel.org/stable/c/7c96a2ee45be41d5a167e6332d202086752c36bb

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