QID 352349

Date Published: 2021-05-27

QID 352349: Amazon Linux Security Advisory for kernel-livepatch: ALAS2LIVEPATCH-2020-019

<DIV ID="issue_overview"> in the linux kernel 5.0.21, a setxattr operation, after a mount of a crafted ext4 image, can cause a slab-out-of-bounds write access because of an ext4_xattr_set_entry use-after-free in fs/ext4/xattr.c when a large old_size value is used in a memset call. (
cve-2019-19319 ) </DIV>

Note: The preceding description block is extracted directly from the security advisory. Using automation, we have attempted to clean and format it as much as possible without introducing additional issues.

Allows unauthorized disclosure of information; allows unauthorized modification; allows disruption of service.

CVSS V3 rated as High - 6.5 severity.

CVSS V2 rated as Medium - 4.4 severity.

Solution

Please refer to Amazon advisory: ALASLIVEPATCH-2020-019 for affected packages and patching details, or update with your package manager.

Vendor References

ALASLIVEPATCH-2020-019 - alas.aws.amazon.com/AL2/ALASLIVEPATCH-2020-019.html

CVEs related to QID 352349

CVE-2019-19319 |

Software Advisories

Advisory ID	Software	Component	Link
ALASLIVEPATCH-2020-019	Amazon Linux 2		alas.aws.amazon.com/AL2/ALASLIVEPATCH-2020-019.html

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