7.1

CVE-2018-1094

Exploit
The ext4_fill_super function in fs/ext4/super.c in the Linux kernel through 4.15.15 does not always initialize the crc32c checksum driver, which allows attackers to cause a denial of service (ext4_xattr_inode_hash NULL pointer dereference and system crash) via a crafted ext4 image.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Linux ≫ Linux Kernel Version <= 4.15.15
Canonical ≫ Ubuntu Linux Version 16.04 SwEdition lts
Canonical ≫ Ubuntu Linux Version 18.04 SwEdition lts
VulnDex Vulnerability Enrichment
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 2.1% 0.799
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
NIST 5.5 1.8 3.6
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
NIST 7.1 8.6 6.9
AV:N/AC:M/Au:N/C:N/I:N/A:C
CWE-476 NULL Pointer Dereference

The product dereferences a pointer that it expects to be valid but is NULL.

https://access.redhat.com/errata/RHSA-2018:3083
Third Party Advisory
https://access.redhat.com/errata/RHSA-2018:3096
Third Party Advisory
https://access.redhat.com/errata/RHSA-2018:2948
Third Party Advisory
https://usn.ubuntu.com/3695-1/
Third Party Advisory
https://usn.ubuntu.com/3695-2/
Third Party Advisory
http://openwall.com/lists/oss-security/2018/03/29/1
Third Party Advisory
Mailing List
https://bugzilla.kernel.org/show_bug.cgi?id=199183
Exploit
Issue Tracking
https://bugzilla.redhat.com/show_bug.cgi?id=1560788
Third Party Advisory
Issue Tracking
https://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4.git/commit/?id=18db4b4e6fc31eda838dd1c1296d67dbcb3dc957
Third Party Advisory
https://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4.git/commit/?id=a45403b51582a87872927a3e0fc0a389c26867f1
Patch