Summary
Package updates are available for Amazon Linux 2023 that fix the following vulnerabilities: CVE-2026-4897: A flaw was found in polkit. A local user can exploit this by providing a specially crafted, excessively long input to the `polkit-agent-helper-1` setuid binary via standard input (stdin). This unbounded input can lead to an out-of-memory (OOM) condition, resulting in a Denial of Service (DoS) for the system.
Fixed packages 7
| Release | Package | Fixed in |
|---|---|---|
| Amazon Linux · 2023 | polkit | 0:125-1.amzn2023.0.3 |
| Amazon Linux · 2023 | polkit-debuginfo | 0:125-1.amzn2023.0.3 |
| Amazon Linux · 2023 | polkit-debugsource | 0:125-1.amzn2023.0.3 |
| Amazon Linux · 2023 | polkit-devel | 0:125-1.amzn2023.0.3 |
| Amazon Linux · 2023 | polkit-docs | 0:125-1.amzn2023.0.3 |
| Amazon Linux · 2023 | polkit-libs | 0:125-1.amzn2023.0.3 |
| Amazon Linux · 2023 | polkit-libs-debuginfo | 0:125-1.amzn2023.0.3 |
Vulnerabilities 1
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Medium 5.5
Polkit: polkit: denial of service via unbounded input processing through standard input
A flaw was found in polkit. A local user can exploit this by providing a specially crafted, excessively long input to the `polkit-agent-helper-1` setuid binary via standard input (stdin). This unbounded input can lead to an out-of-memory (OOM) condition, resu…
References
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web
https://alas.aws.amazon.com/cve/html/CVE-2026-4897.html