Summary
Package updates are available for Amazon Linux 2 that fix the following vulnerabilities: CVE-2021-20257: An infinite loop flaw was found in the e1000 NIC emulator of the QEMU. This issue occurs while processing transmits (tx) descriptors in process_tx_desc if various descriptor fields are initialized with invalid values. This flaw allows a guest to consume CPU cycles on the host, resulting in a denial of service. The highest threat from this vulnerability is to system availability.
Fixed packages 28
| Release | Package | Fixed in |
|---|---|---|
| Amazon Linux · 2 | ivshmem-tools | 10:3.1.0-8.amzn2.0.9 |
| Amazon Linux · 2 | qemu | 10:3.1.0-8.amzn2.0.9 |
| Amazon Linux · 2 | qemu-audio-alsa | 10:3.1.0-8.amzn2.0.9 |
| Amazon Linux · 2 | qemu-audio-oss | 10:3.1.0-8.amzn2.0.9 |
| Amazon Linux · 2 | qemu-audio-pa | 10:3.1.0-8.amzn2.0.9 |
| Amazon Linux · 2 | qemu-audio-sdl | 10:3.1.0-8.amzn2.0.9 |
| Amazon Linux · 2 | qemu-block-curl | 10:3.1.0-8.amzn2.0.9 |
| Amazon Linux · 2 | qemu-block-dmg | 10:3.1.0-8.amzn2.0.9 |
| Amazon Linux · 2 | qemu-block-iscsi | 10:3.1.0-8.amzn2.0.9 |
| Amazon Linux · 2 | qemu-block-nfs | 10:3.1.0-8.amzn2.0.9 |
| Amazon Linux · 2 | qemu-block-rbd | 10:3.1.0-8.amzn2.0.9 |
| Amazon Linux · 2 | qemu-block-ssh | 10:3.1.0-8.amzn2.0.9 |
| Amazon Linux · 2 | qemu-common | 10:3.1.0-8.amzn2.0.9 |
| Amazon Linux · 2 | qemu-debuginfo | 10:3.1.0-8.amzn2.0.9 |
| Amazon Linux · 2 | qemu-guest-agent | 10:3.1.0-8.amzn2.0.9 |
| Amazon Linux · 2 | qemu-img | 10:3.1.0-8.amzn2.0.9 |
| Amazon Linux · 2 | qemu-kvm | 10:3.1.0-8.amzn2.0.9 |
| Amazon Linux · 2 | qemu-kvm-core | 10:3.1.0-8.amzn2.0.9 |
| Amazon Linux · 2 | qemu-system-aarch64 | 10:3.1.0-8.amzn2.0.9 |
| Amazon Linux · 2 | qemu-system-aarch64-core | 10:3.1.0-8.amzn2.0.9 |
| Amazon Linux · 2 | qemu-system-x86 | 10:3.1.0-8.amzn2.0.9 |
| Amazon Linux · 2 | qemu-system-x86-core | 10:3.1.0-8.amzn2.0.9 |
| Amazon Linux · 2 | qemu-ui-curses | 10:3.1.0-8.amzn2.0.9 |
| Amazon Linux · 2 | qemu-ui-gtk | 10:3.1.0-8.amzn2.0.9 |
| Amazon Linux · 2 | qemu-ui-sdl | 10:3.1.0-8.amzn2.0.9 |
| Amazon Linux · 2 | qemu-user | 10:3.1.0-8.amzn2.0.9 |
| Amazon Linux · 2 | qemu-user-binfmt | 10:3.1.0-8.amzn2.0.9 |
| Amazon Linux · 2 | qemu-user-static | 10:3.1.0-8.amzn2.0.9 |
Vulnerabilities 1
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Unscored —
An infinite loop flaw was found in the e1000 NIC emulator of the QEMU. This issue occurs while processing transmits (tx…
References
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web
https://alas.aws.amazon.com/cve/html/CVE-2021-20257.html