CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:N/AC:M/Au:N/C:N/I:N/A:P
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
AI Score
Confidence
Low
EPSS
Percentile
59.7%
Issue Overview:
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 fs/ext4/super.c, aka CID-4ea99936a163. (CVE-2019-19767)
Affected Packages:
kernel
Note:
This advisory is applicable to Amazon Linux 2 (AL2) Core repository. Visit this FAQ section for the difference between AL2 Core and AL2 Extras advisories.
Issue Correction:
Run yum update kernel to update your system.
New Packages:
aarch64:
kernel-4.14.158-129.185.amzn2.aarch64
kernel-headers-4.14.158-129.185.amzn2.aarch64
kernel-debuginfo-common-aarch64-4.14.158-129.185.amzn2.aarch64
perf-4.14.158-129.185.amzn2.aarch64
perf-debuginfo-4.14.158-129.185.amzn2.aarch64
python-perf-4.14.158-129.185.amzn2.aarch64
python-perf-debuginfo-4.14.158-129.185.amzn2.aarch64
kernel-tools-4.14.158-129.185.amzn2.aarch64
kernel-tools-devel-4.14.158-129.185.amzn2.aarch64
kernel-tools-debuginfo-4.14.158-129.185.amzn2.aarch64
kernel-devel-4.14.158-129.185.amzn2.aarch64
kernel-debuginfo-4.14.158-129.185.amzn2.aarch64
i686:
kernel-headers-4.14.158-129.185.amzn2.i686
src:
kernel-4.14.158-129.185.amzn2.src
x86_64:
kernel-4.14.158-129.185.amzn2.x86_64
kernel-headers-4.14.158-129.185.amzn2.x86_64
kernel-debuginfo-common-x86_64-4.14.158-129.185.amzn2.x86_64
perf-4.14.158-129.185.amzn2.x86_64
perf-debuginfo-4.14.158-129.185.amzn2.x86_64
python-perf-4.14.158-129.185.amzn2.x86_64
python-perf-debuginfo-4.14.158-129.185.amzn2.x86_64
kernel-tools-4.14.158-129.185.amzn2.x86_64
kernel-tools-devel-4.14.158-129.185.amzn2.x86_64
kernel-tools-debuginfo-4.14.158-129.185.amzn2.x86_64
kernel-devel-4.14.158-129.185.amzn2.x86_64
kernel-debuginfo-4.14.158-129.185.amzn2.x86_64
Red Hat: CVE-2019-19767
Mitre: CVE-2019-19767
CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:N/AC:M/Au:N/C:N/I:N/A:P
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
AI Score
Confidence
Low
EPSS
Percentile
59.7%