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
02 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
03 Exploitation and scoring
- Exploitation
- Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
- SSVC decision
- Not assessed by CISA
- EPSS probability
- 2.08% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 81.4% of scored records. A rank, not a probability.
- NVD base score
- 5.5 (CVSS v3.x), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
- NVD analysis status
- Modified. NVD last modified this record on 2026-06-17.
- Red Hat severity
- Low. Red Hat's rating for its own products, not a CVSS rating.
Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.
04 Metadata
- Published
- 2018-04-02 03:00Z8 YR AGO
- Last updated
- 2024-08-05 03:51Z2 YR AGO
- Reserved
- 2017-12-04
- Assigning CNA
- redhat
- Record state
- PUBLISHED
- Severity
- Not rated by the issuing CNA
- CNA CVSS vector
- Not published by the issuing CNA
- Weaknesses
- CWE-476NULL Pointer DereferenceBase
- Data version
- 5.1
- Document digest
- 6b75b6f5e4e910610b2ae5e72d6dbe3c60981956bbd19d6b40d728e2c2bba238
05 Affected products
06 References
- bugzilla.redhat.comhttps://bugzilla.redhat.com/show_bug.cgi?id=1560788
- access.redhat.comRHSA-2018:3083https://access.redhat.com/errata/RHSA-2018:3083
- git.kernel.orghttps://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4.git/commit/?id=18db4b4e6fc31eda838dd1c1296d67dbcb3dc957
- openwall.comhttp://openwall.com/lists/oss-security/2018/03/29/1
- usn.ubuntu.comUSN-3695-1https://usn.ubuntu.com/3695-1/
- git.kernel.orghttps://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4.git/commit/?id=a45403b51582a87872927a3e0fc0a389c26867f1
- usn.ubuntu.comUSN-3695-2https://usn.ubuntu.com/3695-2/
- bugzilla.kernel.orghttps://bugzilla.kernel.org/show_bug.cgi?id=199183
- access.redhat.comRHSA-2018:2948https://access.redhat.com/errata/RHSA-2018:2948
- access.redhat.comRHSA-2018:3096https://access.redhat.com/errata/RHSA-2018:3096
07 Fixed in
Debian 12
- linux Fixed in 4.15.17-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 13
- linux Fixed in 4.15.17-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 14
- linux Fixed in 4.15.17-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 16.04 LTS
- linux-azure Fixed in 4.15.0-1014.14~16.04.1
- linux-gcp Fixed in 4.15.0-1014.14~16.04.1
- linux-hwe Fixed in 4.15.0-24.26~16.04.1
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 18.04 LTS
- linux Fixed in 4.15.0-24.26
- linux-aws Fixed in 4.15.0-1011.11
- linux-azure Fixed in 4.15.0-1014.14
- linux-gcp Fixed in 4.15.0-1010.10
- linux-kvm Fixed in 4.15.0-1012.12
- linux-oem Fixed in 4.15.0-1009.12
- linux-raspi2 Fixed in 4.15.0-1013.14
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.