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CVE-2022-49576

ipv4: Fix data-races around sysctl_fib_multipath_hash_fields.

MEDIUM
4.7
CVSS Score
Published: February 26, 2025 at 02:23 AM UTC
Updated: June 17, 2026 at 05:18 AM UTC
1 product affected across 1 vendorLinux Kernel

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Severity
MEDIUM4.7
Exploit prediction
EPSS 0.2%
SSVC
No known exploit

Description

In the Linux kernel, the following vulnerability has been resolved: ipv4: Fix data-races around sysctl_fib_multipath_hash_fields. While reading sysctl_fib_multipath_hash_fields, it can be changed concurrently. Thus, we need to add READ_ONCE() to its readers.

Affected

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

Linux Kernel· Linux
95%
5.14 ≤ v < 5.15.585.14 ≤ v < 5.18.155.14 ≤ v < 5.195.16 ≤ v < 5.18.155.19 rc15.19 rc25.19 rc35.19 rc45.19 rc55.19 rc65.19 rc7ce5c9c20d364f156c885efed8c71fca2945db00f
Vendor states this is fixed in 36f5b86f309b3b11295d087cd7433f1c897caf94 (fixed)
Vendor states this is fixed in 548d6678c4a3d43667e59686665f8674b82440a3 (fixed)
Vendor states this is fixed in 8895a9c2ac76fb9d3922fed4fe092c8ec5e5cccc (fixed)
Vendor states this is fixed in 5.14 (unaffected)
Vendor states this is fixed in 5.15.58 (unaffected)
Vendor states this is fixed in 5.18.15 (unaffected)
Vendor states this is fixed in 5.19 (unaffected)

References (3)

Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/36f5b86f309b3b11295d087cd7433f1c897caf94
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/548d6678c4a3d43667e59686665f8674b82440a3
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/8895a9c2ac76fb9d3922fed4fe092c8ec5e5cccc

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

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

CVSS

4.7MEDIUMCISA-ADP
Attack Vector
LOCAL
Complexity
HIGH
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-362

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