CVE-2024-56692

Kernel panic via unchecked F2FS block address

Published Dec 28, 2024 · Updated Aug 5, 2026

Denial of service in the Linux kernel F2FS driver allows local users to panic the system through a crafted filesystem image. A crafted NAT entry supplies a corrupted block address that truncate_node() passes to f2fs_invalidate_blocks() without validating it. The image must be mounted and a node truncated; triggering the path panics the kernel and interrupts the host.

CVSS severity5.5
Medium
EPSS probability0.22%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Denial of service in the Linux kernel F2FS driver allows local users to panic the system through a crafted filesystem image. A crafted NAT entry supplies a corrupted block address that truncate_node() passes to f2fs_invalidate_blocks() without validating it. The image must be mounted and a node truncated; triggering the path panics the kernel and interrupts the host.

The record

CVE
CVE-2024-56692
Published
Dec 28, 2024
Updated
Aug 5, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-754, T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Dec 28, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 5, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=3.8
  2. Affected versionversion=98e4da8ca301e062d79ae168c67e56f3c3de3ce4 <0a5c8b3fbf6200f1c66062d307c9a52084917788
  3. Affected versionversion=98e4da8ca301e062d79ae168c67e56f3c3de3ce4 <27d6e7eff07f8cce8e83b162d8f21a07458c860d
  4. Affected versionversion=98e4da8ca301e062d79ae168c67e56f3c3de3ce4 <6babe00ccd34fc65b78ef8b99754e32b4385f23d
  5. Affected versionversion=98e4da8ca301e062d79ae168c67e56f3c3de3ce4 <c1077078ce4589b5e5387f6b0aaa0d4534b9eb57

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=3.8; version=98e4da8ca301e062d79ae168c67e56f3c3de3ce4 <0a5c8b3fbf6200f1c66062d307c9a52084917788; version=98e4da8ca301e062d79ae168c67e56f3c3de3ce4 <27d6e7eff07f8cce8e83b162d8f21a07458c860d; version=98e4da8ca301e062d79ae168c67e56f3c3de3ce4 <6babe00ccd34fc65b78ef8b99754e32b4385f23d; version=98e4da8ca301e062d79ae168c67e56f3c3de3ce4 <c1077078ce4589b5e5387f6b0aaa0d4534b9eb57

Published CVSS scores

5.5CISA ADP VulnrichmentCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-754Improper Check for Unusual or Exceptional Conditions
T1499Endpoint Denial of Service

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

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