SB2021082805 - openEuler update for kernel

Description

This security bulletin contains information about 3 secuirty vulnerabilities.

1) Information disclosure (CVE-ID: CVE-2021-34556)

The vulnerability allows a local user to gain access to potentially sensitive information.

The vulnerability exists due to excessive data output by the application. A local user can gain unauthorized access to sensitive information on the system.

2) Observable discrepancy (CVE-ID: CVE-2021-35477)

The vulnerability allows a local user to gain access to sensitive information.

The vulnerability exists due to observable discrepancy error. A local user can gain access to sensitive information.

3) Information disclosure (CVE-ID: CVE-2021-21781)

The vulnerability allows a local user to gain access to potentially sensitive information.

The vulnerability exists due to excessive data output in the ARM SIGPAGE functionality. A userland application can read the contents of the sigpage, which can leak kernel memory contents.

Remediation

Install update from vendor's website.

References

• https://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2021-1324