SB2023051232 - openEuler 20.03 LTS SP3 update for kernel

Description

This security bulletin contains information about 6 secuirty vulnerabilities.

1) Time-of-check Time-of-use (TOCTOU) Race Condition (CVE-ID: CVE-2023-2007)

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

The vulnerability exists due to a race condition in dpt_i2o driver. A local privileged user can gain access to sensitive kernel information.

2) NULL pointer dereference (CVE-ID: CVE-2023-2177)

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 net/sctp/stream_sched.c in Linux kernel. A local user can pass specially crafted data to the system and perform a denial of service (DoS) attack.

3) Out-of-bounds read (CVE-ID: CVE-2023-2176)

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

The vulnerability exists due to a boundary condition within the compare_netdev_and_ip() function in drivers/infiniband/core/cma.c in RDMA in the Linux Kernel. A local user can trigger an out-of-bounds read error and read contents of memory on the system.

4) Out-of-bounds write (CVE-ID: CVE-2023-2194)

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

The vulnerability exists due to a boundary error in the Linux kernel's SLIMpro I2C device driver. A local user can trigger an out-of-bounds write and execute arbitrary code with elevated privileges.

5) Improper locking (CVE-ID: CVE-2023-2269)

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

The vulnerability exists due to double-locking error in table_clear in drivers/md/dm-ioctl.c. A local user can perform a denial of service (DoS) attack.

6) Out-of-bounds write (CVE-ID: CVE-2023-31436)

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

The vulnerability exists due to a boundary error within the qfq_change_class() function in net/sched/sch_qfq.c when handling the MTU value provided to the QFQ Scheduler. A local user can trigger an out-of-bounds write 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-2023-1277