QID 353146

Date Published: 2022-02-01

QID 353146: Amazon Linux Security Advisory for kernel : ALAS2KERNEL-5.4-2022-005

An out-of-bounds write flaw was found in the linux kernel's seq_file in the filesystem layer.
This flaw allows a local attacker with a user privilege to gain access to out-of-bound memory, leading to a system crash or a leak of internal kernel information.
The issue results from not validating the size_t-to-int conversion prior to performing operations.
The highest threat from this vulnerability is to data integrity, confidentiality and system availability. (
( CVE-2021-33909)

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.

Successful exploitation of this vulnerability could lead to a securitybreach or could affect integrity, availability, and confidentiality.

CVSS V3 rated as High - 7.8 severity.

CVSS V2 rated as High - 7.2 severity.

Solution

Please refer to Amazon advisory: ALAS2KERNEL-5.4-2022-005 for affected packages and patching details, or update with your package manager.

Vendor References

ALAS2KERNEL-5.4-2022-005 - alas.aws.amazon.com/AL2/ALASKERNEL-5.4-2022-005.html

CVEs related to QID 353146

CVE-2021-33909 |

Software Advisories

Advisory ID	Software	Component	Link
ALAS2KERNEL-5.4-2022-005	Amazon Linux 2		alas.aws.amazon.com/AL2/ALASKERNEL-5.4-2022-005.html

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