oss-security - a number of CVEs for issues in the filesystem's code in the Linux kernel

Follow @Openwall on Twitter for new release announcements and other news

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

Message-ID: <2142970777.14264014.1522310169467.JavaMail.zimbra@redhat.com>
Date: Thu, 29 Mar 2018 03:56:09 -0400 (EDT)
From: Vladis Dronov <vdronov@...hat.com>
To: oss-security@...ts.openwall.com
Subject: a number of CVEs for issues in the filesystem's code in the Linux
 kernel

Hello,

A number of CVEs were assigned to recently found issues in the filesystem's code in the Linux kernel:

====

CVE-2018-1092 kernel: NULL pointer dereference in ext4/mballoc.c:ext4_process_freed_data() when mounting crafted ext4 image

The Linux kernel through version 4.15 is vulnerable to a NULL pointer dereference
in the ext4/mballoc.c:ext4_process_freed_data() function. An attacker with
privileged access could exploit this by mounting a crafted ext4 image to cause a kernel panic.

References:
https://bugzilla.kernel.org/show_bug.cgi?id=199179
https://bugzilla.redhat.com/show_bug.cgi?id=1560777

=====

CVE-2018-1093 kernel: Out of bounds read in ext4/balloc.c:ext4_valid_block_bitmap() causes crash with crafted ext4 image

The Linux kernel through version 4.15 is vulnerable to an out-of-bounds
read in ext4/balloc.c:ext4_valid_block_bitmap() function. An privileged
attacker could exploit this by mounting a crafted ext4 image to cause a crash.

References:
https://bugzilla.kernel.org/show_bug.cgi?id=199181
https://bugzilla.redhat.com/show_bug.cgi?id=1560782

=====

CVE-2018-1094 kernel: NULL pointer dereference in ext4/xattr.c:ext4_xattr_inode_hash() causes crash with crafted ext4 image

The Linux kernel through version 4.15 is vulnerable to a NULL pointer dereference
in the ext4/xattr.c:ext4_xattr_inode_hash() function. A privileged attacker could
exploit this to cause a NULL pointer dereference with a crafted ext4 image.

References:
https://bugzilla.kernel.org/show_bug.cgi?id=199183
https://bugzilla.redhat.com/show_bug.cgi?id=1560788

=====

CVE-2018-1095 kernel: NULL pointer dereference in fs/posix_acl.c:get_acl() causes crash with crafted ext4 image

The Linux kernel through version 4.15 is vulnerable to a NULL pointer
dereference in the  fs/posix_acl.c:get_acl()function. A privileged attacker
could exploit this to cause a NULL pointer dereference with a crafted ext4
image.

References:

https://bugzilla.kernel.org/show_bug.cgi?id=199185
https://bugzilla.redhat.com/show_bug.cgi?id=1560793

=====

Best regards,
Vladis Dronov | Red Hat, Inc. | Product Security Engineer

Please check out the Open Source Software Security Wiki, which is counterpart to this mailing list.

Confused about mailing lists and their use? Read about mailing lists on Wikipedia and check out these guidelines on proper formatting of your messages.