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CVE-2021-47464

audit: fix possible null-pointer dereference in audit_filter_rules

HIGH
7.4
CVSS Score
Published: May 22, 2024 at 06:23 AM UTC
Updated: June 17, 2026 at 04:17 AM UTC
1 product affected across 1 vendorLinux Kernel

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Severity
HIGH7.4
Exploit prediction
EPSS 0.2%
SSVC
No known exploit

Description

In the Linux kernel, the following vulnerability has been resolved: audit: fix possible null-pointer dereference in audit_filter_rules Fix possible null-pointer dereference in audit_filter_rules. audit_filter_rules() error: we previously assumed 'ctx' could be null

Affected

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

Linux Kernel· Linux
95%
5.11 ≤ v < 5.14.155.3 ≤ v < 5.10.765.3 ≤ v < 5.14.155.3 ≤ v < 5.155.3 ≤ v < 5.4.1565.5 ≤ v < 5.10.765.15 rc15.15 rc25.15 rc35.15 rc45.15 rc55.15 rc6bf361231c295bf361231c295d92a28ca283ea713f56e93e55796
Vendor states this is fixed in 16802fa4c33e (fixed)
Vendor states this is fixed in 16802fa4c33eb1a8efb23f1e93365190e4047d05 (fixed)
Vendor states this is fixed in 4e9e46a70020 (fixed)
Vendor states this is fixed in 4e9e46a700201b4c85081fd478c99c692a9aaa0d (fixed)
Vendor states this is fixed in 6e3ee990c904 (fixed)
Vendor states this is fixed in 6e3ee990c90494561921c756481d0e2125d8b895 (fixed)
Vendor states this is fixed in d6f451f1f60c (fixed)
Vendor states this is fixed in d6f451f1f60c58d73038c7c3177066f8f084e2a2 (fixed)
Vendor states this is fixed in 5.10.76 (unaffected)
Vendor states this is fixed in 5.14.15 (unaffected)
Vendor states this is fixed in 5.15 (unaffected)
Vendor states this is fixed in 5.3 (unaffected)
Vendor states this is fixed in 5.4.156 (unaffected)

References (4)

Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/16802fa4c33eb1a8efb23f1e93365190e4047d05
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/4e9e46a700201b4c85081fd478c99c692a9aaa0d
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/6e3ee990c90494561921c756481d0e2125d8b895
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/d6f451f1f60c58d73038c7c3177066f8f084e2a2

SSVC — Action Prioritization

SSVCNo known exploitNot automatableTotal impact

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

CVSS

7.4HIGHCISA-ADP
Attack Vector
LOCAL
Complexity
HIGH
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusANALYZED
CWE
CWE-476

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