VulnerabilityModified
CVE-2018-1094
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…
MEDIUM 5.5EPSS 2.08%
Does this matter?
Lower severity and a low EPSS score (2.08%). Track it; it rarely justifies an emergency change on its own.
Description
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.
- CVSS 3.1
- 5.5 MEDIUMCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
- EPSS
- 2.08% probability · 80th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-476
- Affected
- linux/linux kernel · canonical/ubuntu linux · redhat/enterprise linux desktop · redhat/enterprise linux server · redhat/enterprise linux workstation
- Source
- secalert@redhat.com
References
- http://openwall.com/lists/oss-security/2018/03/29/1Mailing List, Third Party Advisory
- https://access.redhat.com/errata/RHSA-2018:2948Third Party Advisory
- https://access.redhat.com/errata/RHSA-2018:3083Third Party Advisory
- https://access.redhat.com/errata/RHSA-2018:3096Third Party Advisory
- https://bugzilla.kernel.org/show_bug.cgi?id=199183Exploit, Issue Tracking
- https://bugzilla.redhat.com/show_bug.cgi?id=1560788Issue Tracking, Third Party Advisory
- https://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4.git/commit/?id=18db4b4e6fc31eda838dd1c1296d67dbcb3dc957Third Party Advisory
- https://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4.git/commit/?id=a45403b51582a87872927a3e0fc0a389c26867f1Patch
- https://usn.ubuntu.com/3695-1/Third Party Advisory
- https://usn.ubuntu.com/3695-2/Third Party Advisory
- http://openwall.com/lists/oss-security/2018/03/29/1Mailing List, Third Party Advisory
- https://access.redhat.com/errata/RHSA-2018:2948Third Party Advisory
- https://access.redhat.com/errata/RHSA-2018:3083Third Party Advisory
- https://access.redhat.com/errata/RHSA-2018:3096Third Party Advisory
- https://bugzilla.kernel.org/show_bug.cgi?id=199183Exploit, Issue Tracking
- https://bugzilla.redhat.com/show_bug.cgi?id=1560788Issue Tracking, Third Party Advisory
- https://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4.git/commit/?id=18db4b4e6fc31eda838dd1c1296d67dbcb3dc957Third Party Advisory
- https://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4.git/commit/?id=a45403b51582a87872927a3e0fc0a389c26867f1Patch
- https://usn.ubuntu.com/3695-1/Third Party Advisory
- https://usn.ubuntu.com/3695-2/Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.