SB2021103011 - openEuler update for kernel

Description

This security bulletin contains information about 4 secuirty vulnerabilities.

1) Input validation error (CVE-ID: CVE-2020-26141)

The vulnerability allows a remote attacker to compromise the target system.

The vulnerability exists due to the Wi-Fi implementation does not verify the Message Integrity Check (authenticity) of fragmented TKIP frames. A remote attacker on the local network can inject and possibly decrypt packets in WPA or WPA2 networks that support the TKIP data-confidentiality protocol.

2) Input validation error (CVE-ID: CVE-2020-26145)

The vulnerability allows a remote attacker to compromise the target system.

The vulnerability exists due to the WEP, WPA, WPA2, and WPA3 implementations accept second (or subsequent) broadcast fragments even when sent in plaintext and process them as full unfragmented frames. A remote attacker on the local network can inject arbitrary network packets independent of the network configuration.

3) Out-of-bounds write (CVE-ID: CVE-2021-42252)

The vulnerability allows a local user to execute arbitrary code.

The vulnerability exists due to an out-of-bounds write within the aspeed_lpc_ctrl_mmap() function in drivers/soc/aspeed/aspeed-lpc-ctrl.c. A local user can execute arbitrary code.

4) Buffer overflow (CVE-ID: CVE-2021-42739)

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to a boundary within the firewire subsystem in the Linux kernel in drivers/media/firewire/firedtv-avc.c and drivers/media/firewire/firedtv-ci.c files. A local privileged user can run a specially crafted program tat calls avc_ca_pmt() function to trigger memory corruption and execute arbitrary code with elevated privileges.

Remediation

Install update from vendor's website.

References

• https://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2021-1407