CVE-2011-4086

kernel: jbd2: unmapped buffer with _Unwritten or _Delay flags set can lead to DoS

Published Jul 3, 2012 CVSS 2.0 · 4.9 Medium EPSS < 1% KEV · Not listed
Description
The journal_unmap_buffer function in fs/jbd2/transaction.c in the Linux kernel before 3.3.1 does not properly handle the _Delay and _Unwritten buffer head states, which allows local users to cause a denial of service (system crash) by leveraging the presence of an ext4 filesystem that was mounted with a journal.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
Debian DSA Debian DSA DSA-2469-1 linux-2.6 security update
EUVD EUVD EUVD-2011-4037 The journal_unmap_buffer function in fs/jbd2/transaction.c in the Linux kernel before 3.3.1 does not properly handle the _Delay and _Unwritten buffer head states, which allows local users to cause a denial of service (system crash) by leveraging the presence of an ext4 filesystem that was mounted with a journal.
Ubuntu USN Ubuntu USN USN-1431-1 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-1432-1 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-1433-1 Linux kernel (Oneiric backport) vulnerabilities
Ubuntu USN Ubuntu USN USN-1440-1 Linux kernel (Natty backport) vulnerabilities
Ubuntu USN Ubuntu USN USN-1445-1 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-1446-1 Linux kernel (OMAP4) vulnerabilities
Ubuntu USN Ubuntu USN USN-1453-1 Linux kernel (EC2) vulnerabilities
Ubuntu USN Ubuntu USN USN-1454-1 Linux kernel vulnerability
Ubuntu USN Ubuntu USN USN-1458-1 Linux kernel (OMAP4) vulnerabilities
History

No history.

Weaknesses

Sources

Status
PUBLISHED
Assigner
redhat
Published
Updated
Aug 6, 2024, 11:53 PM
Reserved
Oct 18, 2011, 12:00 AM
Status
Modified
Published
Jul 3, 2012, 4:40 PM
Modified
Jun 16, 2026, 11:34 PM
Severity
Moderate
Public date
Jan 25, 2012, 12:00 AM