Bug 1853922 (CVE-2020-14314) - CVE-2020-14314 kernel: buffer uses out of index in ext3/4 filesystem
Summary: CVE-2020-14314 kernel: buffer uses out of index in ext3/4 filesystem
Keywords:
Status: NEW
Alias: CVE-2020-14314
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 1846164 1846165 1854089 1854409 1854410 1854411 1843333
Blocks: 1846341
TreeView+ depends on / blocked
 
Reported: 2020-07-05 17:07 UTC by Alex
Modified: 2020-09-15 20:44 UTC (History)
49 users (show)

Fixed In Version: Linux kernel version 5.9-rc2
Doc Type: If docs needed, set a value
Doc Text:
A memory out-of-bounds read flaw was found in the Linux kernel's ext3/ext4 file system, in the way it accesses a directory with broken indexing. This flaw allows a local user to crash the system if the directory exists. The highest threat from this vulnerability is to system availability.
Clone Of:
Environment:
Last Closed:


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Description Alex 2020-07-05 17:07:29 UTC
A memory out of bound read flaw was found in the Linux kernel's ext3/ext4 file system, in the way it accesses directory with broken indexing. This flaw allows a local user to crash the system if such directory exists.

Comment 2 Alex 2020-07-06 11:25:34 UTC
Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 1854089]

Comment 10 Alex 2020-07-09 18:15:42 UTC
Acknowledgments:

Name: Jay Shin (Red Hat)

Comment 13 Petr Matousek 2020-07-15 12:14:57 UTC
Mitigation:

If any directories of the partition (or image) broken, the command "e2fsck -Df .../partition-name" fixes it.


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