Predictive Vulnerability Intelligence.

Product

  • Product
  • Pricing
  • Documentation

Company

  • About
  • Partnerships
  • Blog
  • Support

Legal

  • Terms
  • Privacy
  • Data Licensing

© 2026 FAUCET Technologies LLC. All rights reserved.

CVE-2009-4306

16
FAUCET Score

CVE-2009-4306 describes an unspecified vulnerability in the EXT4_IOC_MOVE_EXT ioctl implementation within the ext4 filesystem of Linux kernel versions 2.6.32-git6 and earlier. This local vulnerability allows an attacker to cause a denial of service through filesystem corruption via unknown vectors. With a CVSS score of 4.9 (AV:L/AC:L/Au:N/C:N/I:N/A:C), it indicates low attack complexity and no confidentiality or integrity impact, but a complete availability impact. There is no known public exploit code available (Metasploit, Nuclei, ExploitDB), nor is it listed in the CISA KEV catalog, suggesting it is not actively exploited. Community discussion and media coverage are minimal, indicating low public attention.

Impacted Technologies

VendorProductVersion(s)CPE
<= 2.6.32CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:git-6:*:*:*:*:*:*
2.6.0CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:2.6.0:*:*:*:*:*:*:*
2.6.1CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:2.6.1:*:*:*:*:*:*:*
2.6.2CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:2.6.2:*:*:*:*:*:*:*
2.6.3CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:2.6.3:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

4.9MEDIUM

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

Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
COMPLETE
Access Vector
LOCAL
Access Complexity
LOW
Authentication
NONE
Exploitability Score
3.9
Impact Score
6.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
0.38%
Probability of exploitation in next 30 days
EPSS Percentile
30.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0038 is in the 53rd percentile among its peer group of 3,052 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

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

Remediation

Vendor Advisories (1)

redhatCVE-2009-4306Important

kernel: ext4: BUG_ON() via EXT4_IOC_MOVE_EXT ioctl

Dec 14, 2009

References

grsecurity.org / test/grsecurity-2.1.14-2.6.32-200912112157.patch
lists.opensuse.org / opensuse-security-announce/2010-01/msg00000.html
bugzilla.redhat.com / show_bug.cgi
secunia.com / advisories/38017
twitter.com / fotisl/statuses/6568947714
twitter.com / spendergrsec/statuses/6551797457
twitter.com / spendergrsec/statuses/6567167692
twitter.com / spendergrsec/statuses/6569596339
twitter.com / spendergrsec/statuses/6572069107
twitter.com / spendergrsec/statuses/6583954567
twitter.com / tytso/statuses/6571730411