SB2022060235 - openEuler update for qemu

Description

This security bulletin contains information about 2 secuirty vulnerabilities.

1) Out-of-bounds read (CVE-ID: CVE-2020-13253)

The vulnerability allows a remote user to perform a denial of service (DoS) attack.

The vulnerability exists due to a boundary condition in the SD Memory Card emulator while performing block write commands via sdhci_write() in QEMU. A remote user of guest operating system can trigger out-of-bounds read error and crash the QEMU process. 

2) Infinite loop (CVE-ID: CVE-2021-20257)

The vulnerability allows a remote user to perform a denial of service (DoS) attack.

The vulnerability exists due to infinite loop in the e1000 NIC emulator when processing transmits (tx) descriptors in process_tx_desc of QEMU. A remote user can consume all available CPU resources and cause denial of service conditions.

Remediation

Install update from vendor's website.

References

• https://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2022-1690