What is CVE-2009-4308?

CVE-2009-4308 is a High severity Linux kernel vulnerability with a CVSS score of 7.1 out of 10. CVE-2009-4308 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2009-4308?

CVE-2009-4308 has a CVSS score of 7.1 out of 10, rated High severity. The vector string is AV:N/AC:M/Au:N/C:N/I:N/A:C.

Is there a patch available for CVE-2009-4308?

Monitor the NIST NVD and your Linux distribution's security advisories for CVE-2009-4308 patch availability.

Is CVE-2009-4308 actively exploited?

CVE-2009-4308 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2009-4308

High

The ext4_decode_error function in fs/ext4/super.c in the ext4 filesystem in the Linux kernel before 2.6.32 allows user-assisted remote attackers to cause a denial of service (NULL pointer dereference), and possibly have unspecified other impact, via a crafted read-only filesystem that lacks a journal.

Package Linux Kernel

Published 2009-12-13

Last modified 2026-04-23

CVSS version 2.0

Patch available

Awaiting data

CVSS 2.0 score

7.1

out of 10

High

Attack Vector

Network

Attack Complexity

Privileges Required

User Interaction

Scope

Confidentiality

None

Integrity

None

Availability

Vector string

AV:N/AC:M/Au:N/C:N/I:N/A:C

Weakness type

CWE-399

CVE-2009-4308 is classified as CWE-399

See CWE-399 on MITRE CWE for full details on this weakness type.

References

15 total

Showing 5 of 15 references View all on NVD

Details

CVE ID CVE-2009-4308

Severity High

CVSS score 7.1 / 10

CVSS version 2.0

Published 2009-12-13

Modified 2026-04-23

KEV No

Patch Awaiting data

Package linux

Frequently asked questions

What is CVE-2009-4308?

CVE-2009-4308 is a High severity Linux kernel vulnerability with a CVSS score of 7.1 out of 10 . CVE-2009-4308 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2009-4308?

CVE-2009-4308 has a CVSS score of 7.1 out of 10, rated High severity (CVSS 2.0). The vector string is AV:N/AC:M/Au:N/C:N/I:N/A:C.
Is there a patch available for CVE-2009-4308?

Monitor the NIST NVD and your Linux distribution's security advisories for CVE-2009-4308 patch availability.
Is CVE-2009-4308 actively exploited?

No. CVE-2009-4308 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.