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CVE-2015-7509

14
FAUCET Score

CVE-2015-7509 is a denial-of-service vulnerability affecting the Linux kernel before version 3.7, specifically within the ext4 filesystem. A physically proximate attacker can trigger a system crash by providing a specially crafted no-journal filesystem. Rated Medium severity with a CVSS score of 4.4, this vulnerability requires high privileges and local access to exploit, leading to a complete loss of system availability. There is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
<= 3.6.11CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

4.4MEDIUM

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

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
HIGH
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
0.8
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
0.40%
Probability of exploitation in next 30 days
EPSS Percentile
33.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0040 is in the 82nd percentile among its peer group of 3,720 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (3)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: kernel-0:2.6.32-642.el6
View patch
github_advisoryvendor investigatingvia nvd_reference
View patch
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: kernel

Vendor Advisories (1)

redhatCVE-2015-7509Low

kernel: Mounting ext2 fs e2fsprogs/tests/f_orphan as ext4 crashes system

Nov 24, 2015

References

git.kernel.org / cgit/linux/kernel/git/torvalds/linux.git/commit
Vendor Advisory
lists.opensuse.org / opensuse-security-announce/2015-12/msg00026.html
lists.opensuse.org / opensuse-security-announce/2015-12/msg00031.html
lists.opensuse.org / opensuse-security-announce/2016-08/msg00038.html
rhn.redhat.com / errata/RHSA-2016-0855.html
bugzilla.redhat.com / show_bug.cgi
bugzilla.suse.com / show_bug.cgi
github.com / torvalds/linux/commit/c9b92530a723ac5ef8e352885a1862b18f31b2f5
Vendor Advisory
security-tracker.debian.org / tracker/CVE-2015-7509
securitytracker.com / id/1034559