CVE-2019-19767
The Linux kernel before 5.4.2 mishandles ext4_expand_extra_isize, as demonstrated by use-after-free errors in __ext4_expand_extra_isize and ext4_xattr_set_entry, related to fs/ext4/inode.c and
02 Description
The Linux kernel before 5.4.2 mishandles ext4_expand_extra_isize, as demonstrated by use-after-free errors in __ext4_expand_extra_isize and ext4_xattr_set_entry, related to fs/ext4/inode.c and
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
- Moderate. 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
- 2019-12-12 19:39Z6 YR AGO
- Last updated
- 2024-08-05 02:25Z2 YR AGO
- Reserved
- 2019-12-12
- Assigning CNA
- mitre
- Record state
- PUBLISHED
- Severity
- Not rated by the issuing CNA
- CNA CVSS vector
- Not published by the issuing CNA
- Weaknesses
- CWE-416Use After FreeVariant
- Data version
- 5.1
- Document digest
- c20669e34245c93db08efb743ffccff43f06aa2794bcb0e35b25aa3b4f896485
05 Affected products
06 References
- cdn.kernel.orghttps://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.2
- bugzilla.kernel.orghttps://bugzilla.kernel.org/show_bug.cgi?id=205707
- bugzilla.kernel.orghttps://bugzilla.kernel.org/show_bug.cgi?id=205609
- github.comhttps://github.com/torvalds/linux/commit/4ea99936a1630f51fc3a2d61a58ec4a1c4b7d55a
- git.kernel.orghttps://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=4ea99936a1630f51fc3a2d61a58ec4a1c4b7d55a
- security.netapp.comhttps://security.netapp.com/advisory/ntap-20200103-0001/
- lists.debian.org[debian-lts-announce] 20200118 [SECURITY] [DLA 2068-1] linux security updatehttps://lists.debian.org/debian-lts-announce/2020/01/msg00013.html
- usn.ubuntu.comUSN-4258-1https://usn.ubuntu.com/4258-1/
- usn.ubuntu.comUSN-4287-1https://usn.ubuntu.com/4287-1/
- usn.ubuntu.comUSN-4287-2https://usn.ubuntu.com/4287-2/
- lists.debian.org[debian-lts-announce] 20200302 [SECURITY] [DLA 2114-1] linux-4.9 security updatehttps://lists.debian.org/debian-lts-announce/2020/03/msg00001.html
- usn.ubuntu.comUSN-4284-1https://usn.ubuntu.com/4284-1/
- lists.opensuse.orgopenSUSE-SU-2020:0336http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00021.html
07 Fixed in
AlmaLinux 8
- kernel-tools-libs-devel Fixed in 4.18.0-240.el8
Source: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.
CloudLinux 8
- kernel-tools-libs-devel Fixed in 4.18.0-240.el8
Derived from AlmaLinux 8. Partial coverage: only packages taken from AlmaLinux 8 are listed.
Source: CloudLinux errata, CloudLinux Inc. Derived from: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.
Debian 12
- linux Fixed in 5.3.15-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 13
- linux Fixed in 5.3.15-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 14
- linux Fixed in 5.3.15-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 16.04 LTS
- linux-aws-hwe Fixed in 4.15.0-1060.62~16.04.1
- linux-azure Fixed in 4.15.0-1071.76
- linux-gcp Fixed in 4.15.0-1055.59
- linux-hwe Fixed in 4.15.0-88.88~16.04.1
- linux-hwe-edge No fix yet
- linux-oracle Fixed in 4.15.0-1033.36~16.04.1
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 4.15.0-88.88
- linux-aws Fixed in 4.15.0-1060.62
- linux-aws-5.0 Fixed in 5.0.0-1024.27~18.04.1
- linux-azure Fixed in 5.0.0-1029.31~18.04.1
- linux-azure-5.3 Fixed in 5.3.0-1013.14~18.04.1
- linux-azure-edge No fix yet
- linux-gcp Fixed in 5.0.0-1029.30~18.04.1
- linux-gcp-5.3 Fixed in 5.3.0-1012.13~18.04.1
- linux-gcp-edge No fix yet
- linux-gke-4.15 Fixed in 4.15.0-1052.55
- linux-gke-5.0 Fixed in 5.0.0-1029.30~18.04.1
- linux-gke-5.3 Fixed in 5.3.0-1012.13~18.04.1
- linux-hwe Fixed in 5.3.0-40.32~18.04.1
- linux-hwe-edge No fix yet
- linux-kvm Fixed in 4.15.0-1053.53
- linux-oem Fixed in 4.15.0-1073.83
- linux-oem-osp1 Fixed in 5.0.0-1037.42
- linux-oracle Fixed in 4.15.0-1033.36
- linux-oracle-5.0 Fixed in 5.0.0-1010.15~18.04.1
- linux-raspi2 Fixed in 4.15.0-1055.59
- linux-raspi2-5.3 Fixed in 5.3.0-1018.20~18.04.1
- linux-snapdragon Fixed in 4.15.0-1072.79
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 20.04 LTS
- linux-azure-fde No fix yet
- linux-gke No fix yet
- linux-raspi2 No fix yet
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 22.04 LTS
- linux-intel-iot-realtime No fix yet
- linux-realtime No fix yet
- linux-riscv No fix yet
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 24.04 LTS
- linux-raspi-realtime No fix yet
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu Pro 14.04 LTS
- linux-azure Fixed in 4.15.0-1071.76~14.04.1Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu Pro FIPS-updates 18.04 LTS
- linux-aws-fips Fixed in 4.15.0-2018.18Available with Ubuntu Pro: https://ubuntu.com/pro
- linux-azure-fips Fixed in 4.15.0-2006.7Available with Ubuntu Pro: https://ubuntu.com/pro
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu Pro FIPS 18.04 LTS
- linux-aws-fips No fix yet
- linux-azure-fips No fix yet
- linux-gcp-fips No fix yet
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.