linux-ext4 - [Bug 12375] New: ext4_block_to_path block too big cause cpu to burn

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite for Android: free password hash cracker in your pocket

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-Id: <bug-12375-13602@http.bugzilla.kernel.org/>
Date:	Wed,  7 Jan 2009 02:56:33 -0800 (PST)
From:	bugme-daemon@...zilla.kernel.org
To:	linux-ext4@...r.kernel.org
Subject: [Bug 12375] New: ext4_block_to_path block too big cause cpu to burn

http://bugzilla.kernel.org/show_bug.cgi?id=12375

           Summary: ext4_block_to_path block too big cause cpu to burn
           Product: File System
           Version: 2.5
     KernelVersion: 2.6.28
          Platform: All
        OS/Version: Linux
              Tree: Mainline
            Status: NEW
          Severity: normal
          Priority: P1
         Component: ext4
        AssignedTo: fs_ext4@...nel-bugs.osdl.org
        ReportedBy: dmaciejak@...tinet.com


Latest working kernel version: none
Earliest failing kernel version: unknow
Distribution: ubuntu
Hardware Environment: dell optiplex 740
Software Environment:
Problem Description:
when mounting specially crafted ext4 image, after some few seconds (5s),
kern.log is filled with some data and cpu reaches 100%
Steps to reproduce:
bunzip the image file enclosed and mount the image with  mount -t ext4 -o loop
ext4.img /media/tmp

note: i also tried the 2.6.28-ext4-3 patch but it does not help

Regards,

David Maciejak
Fortinet's FortiGuard Global Security Research Team


-- 
Configure bugmail: http://bugzilla.kernel.org/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are the assignee for the bug, or are watching the assignee.
--
To unsubscribe from this list: send the line "unsubscribe linux-ext4" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html