What is CVE-2015-7509?

CVE-2015-7509 is a Medium severity Linux kernel vulnerability with a CVSS score of 4.4 out of 10, classified as a Improper Input Validation flaw (CWE-20). CVE-2015-7509 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2015-7509?

CVE-2015-7509 has a CVSS score of 4.4 out of 10, rated Medium severity. The vector string is CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H.

Is there a patch available for CVE-2015-7509?

No patch is currently available for CVE-2015-7509. Monitor the NIST NVD and your Linux distribution's security advisories for updates.

Is CVE-2015-7509 actively exploited?

CVE-2015-7509 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2015-7509

Medium

fs/ext4/namei.c in the Linux kernel before 3.7 allows physically proximate attackers to cause a denial of service (system crash) via a crafted no-journal filesystem, a related issue to CVE-2013-2015.

Package Linux Kernel

Published 2015-12-28

Last modified 2026-05-06

CVSS version 3.0

Patch available

Awaiting data

CVSS 3.0 score

4.4

out of 10

Medium

Attack Vector

Local

Attack Complexity

Low

Privileges Required

High

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

None

Availability

High

Vector string

CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H

Weakness type

CWE-20

CVE-2015-7509 is a Improper Input Validation vulnerability

What is Improper Input Validation?

The product receives input but does not validate it correctly, allowing attackers to craft inputs that cause unexpected behavior. Learn more on MITRE CWE

References

The following references provide additional information about CVE-2015-7509 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.

Lists
http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00026.html
Lists
http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00031.html
Lists
http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00038.html
Red Hat
http://rhn.redhat.com/errata/RHSA-2016-0855.html
Securitytracker
http://www.securitytracker.com/id/1034559
Red Hat
https://bugzilla.redhat.com/show_bug.cgi?id=1259222
SUSE
https://bugzilla.suse.com/show_bug.cgi?id=956709
Debian Security
https://security-tracker.debian.org/tracker/CVE-2015-7509
Kernel patch commit
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=c9b92530a723ac5ef8e352885a1862b18f31b2f5
Patch
Kernel patch commit
https://github.com/torvalds/linux/commit/c9b92530a723ac5ef8e352885a1862b18f31b2f5
Patch

Details

CVE ID CVE-2015-7509

Severity Medium

CVSS score 4.4 / 10

CVSS version 3.0

Published 2015-12-28

Modified 2026-05-06

KEV No

Patch Awaiting data

Package linux

Frequently asked questions

What is CVE-2015-7509?

CVE-2015-7509 is a Medium severity Linux kernel vulnerability with a CVSS score of 4.4 out of 10 , classified as an Improper Input Validation flaw (CWE-20) . CVE-2015-7509 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2015-7509?

CVE-2015-7509 has a CVSS score of 4.4 out of 10, rated Medium severity (CVSS 3.0). The vector string is CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H.
Is there a patch available for CVE-2015-7509?

No patch is currently available for CVE-2015-7509. Monitor the NIST NVD and your Linux distribution's security advisories for updates.
Is CVE-2015-7509 actively exploited?

No — CVE-2015-7509 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.
What is Improper Input Validation (CWE-20)?

The product receives input but does not validate it correctly, allowing attackers to craft inputs that cause unexpected behavior. View CWE-20 on MITRE CWE →