CVE-2021-47167

NFS: Fix an Oopsable condition in __nfs_pageio_add_request()

MEDIUM
5.5
CVSS Score
Published: March 25, 2024 at 09:16 AM UTC
Updated: June 17, 2026 at 04:16 AM UTC
1 product affected across 1 vendorLinux Kernel

Using Linux by Linux?

Get instant alerts when new vulnerabilities affect Linux - before attackers find them.

Real-time alertsTrack your software stackFree plan available
Severity
MEDIUM5.5
Exploit prediction
EPSS 0.2%
SSVC
No known exploit

Description

In the Linux kernel, the following vulnerability has been resolved: NFS: Fix an Oopsable condition in __nfs_pageio_add_request() Ensure that nfs_pageio_error_cleanup() resets the mirror array contents, so that the structure reflects the fact that it is now empty. Also change the test in nfs_pageio_do_add_request() to be more robust by checking whether or not the list is empty rather than relying on the value of pg_count.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

4.0 ≤ v < 5.10.424.0 ≤ v < 5.12.94.0 ≤ v < 5.134.0 ≤ v < 5.4.1245.11 ≤ v < 5.12.95.5 ≤ v < 5.10.425.13 rc15.13 rc25.13 rc3a7d42ddb3099727f58366fa006f850a219cce6c8
Vendor states this is fixed in 15ac6f14787649e8ebd75c142e2c5d2a243c8490 (fixed)
Vendor states this is fixed in 1fc5f4eb9d31268ac3ce152d74ad5501ad24ca3e (fixed)
Vendor states this is fixed in 56517ab958b7c11030e626250c00b9b1a24b41eb (fixed)
Vendor states this is fixed in ee21cd3aa8548e0cbc8c67a80b62113aedd2d101 (fixed)
Vendor states this is fixed in 4.0 (unaffected)
Vendor states this is fixed in 5.10.42 (unaffected)
Vendor states this is fixed in 5.12.9 (unaffected)
Vendor states this is fixed in 5.13 (unaffected)
Vendor states this is fixed in 5.4.124 (unaffected)

References (4)

Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/15ac6f14787649e8ebd75c142e2c5d2a243c8490
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/1fc5f4eb9d31268ac3ce152d74ad5501ad24ca3e
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/56517ab958b7c11030e626250c00b9b1a24b41eb
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/ee21cd3aa8548e0cbc8c67a80b62113aedd2d101

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

Attack Vector
LOCAL
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusANALYZED
CWE
NVD-CWE-noinfo

Get alerted

Stop reading CVE feeds looking for your own stack

Track the products you run and VulnTracker tells you when a new CVE affects them — with what is known about fixing it, and nothing about the rest.

Free plan, no card