SB2022070835 - openEuler update for kernel

Description

This security bulletin contains information about 3 secuirty vulnerabilities.

1) Use-after-free (CVE-ID: CVE-2022-33981)

The vulnerability allows a local user to perform denial of service attack.

The vulnerability exists due to a use-after-free error in drivers/block/floppy.c in the Linux kernel when deallocating raw_cmd in the raw_cmd_ioctl function(). A local user can trigger use-after-free and perform denial of service attack.

2) Buffer overflow (CVE-ID: CVE-2022-2078)

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

The vulnerability exists due to a boundary error within the nft_set_desc_concat_parse() function in Linux kernel. A local user can trigger memory corruption and execute arbitrary code with elevated privileges.

3) NULL pointer dereference (CVE-ID: CVE-2022-2153)

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

The vulnerability exists due to a NULL pointer dereference error in the Linux kernel’s KVM when attempting to set a SynIC IRQ. A local user on the host can issue specific ioctl calls, causing a denial of service.

Remediation

Install update from vendor's website.

References

• https://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2022-1746